{ "$schema": "https://www.conphora.com/schemas/regulation-page.json", "code": "UoMD", "locale": "en", "url": "https://www.conphora.com/regulations/uomd/", "json": "https://www.conphora.com/regulations/uomd.json", "summaryPdf": "https://www.conphora.com/regulations/uomd/summary.pdf", "dateModified": "2026-09-13", "regulation": { "code": "UoMD", "name": "Council Directive of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC (80/181/EEC)", "shortName": "Units of Measurement Directive", "reference": "Directive 80/181/EEC", "celex": "31980L0181", "eurlex": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31980L0181", "actType": "Directive", "category": "Labelling & Packaging", "inForce": "1979-12-21", "appliesFrom": "1981-10-01", "changing": false, "video": "regulation-uomd" }, "answer": "The Units of Measurement Directive sets the SI-based legal units for every measurement or indication of quantity in the EU, binding manufacturers, importers, distributors, service providers and public bodies. It has applied since 1 October 1981; supplementary non-metric indications remain authorised without end date, and the 2018 SI base unit definitions have applied since 13 June 2020.", "description": "UoMD guide: the Units of Measurement Directive, the seven SI base units and the rest of Chapter I, the units that survive in specific fields and in the Member States that authorised them on 21 April 1973, supplementary indications and the predominance rule, the 2019 SI redefinition, key dates and how to comply.", "enforcedBy": "The directive contains no enforcement or penalty article of its own: Member States adopt and apply the transposing laws under Article 7 and enforce them through their own metrology and market surveillance authorities. Since 16 July 2021 those authorities act with the powers of Regulation (EU) 2019/1020, which lists Directive 80/181/EEC as point 6 of its Annex I; the directive is not in the Article 4(5) list, so the regulation's duty to have an economic operator established in the Union does not attach to it, and it is not in Annex II, so the penalty obligation of Article 41 of that regulation does not extend to it either. In Denmark the directive is implemented by executive order nr. 866 of 11 May 2021 on the international system of units, SI, and other legal units, issued by Sikkerhedsstyrelsen under section 18(1) and section 23(3) of act nr. 1518 of 18 December 2018 on business promotion, whose section 18(1) then required the minister to make rules on metrology, including which units of measurement apply. That power has since moved: act nr. 782 of 4 May 2021 transferred metrology to the product act with effect from 1 July 2021, where the minister's rule-making power for units of measurement is now section 8a and units of measurement are product area nr. 19 of section 2(1). Section 7(1) of act nr. 782/2021 keeps rules made under chapter 8 of the business promotion act in force until they are repealed or replaced by rules made under the product act, which is why order nr. 866/2021 — issued seven weeks before the transfer took effect — still stands, and why section 18 of the current consolidation of the business promotion act (LBK nr. 230 of 29 February 2024) no longer contains a metrology power at all. So the two instruments are not two parallel regimes but a transition: the order is the substantive rule, the product act supplies the control authority, the powers and the penalties. The product act (lov om produkter og markedsovervågning) names Erhvervsstyrelsen as the control authority, and the tasks are carried out by Sikkerhedsstyrelsen, since January 2026 the department Markedsovervågning of Erhvervsstyrelsen, which may also delegate metrology control to another public authority or to a public or private undertaking. The toolkit is orders to warn users, stop misleading marketing, remedy what does not meet the rules, stop sales, withdraw, recall or destroy the product, prohibitions on placing on the market, making available, supplying or putting into use, and orders to the owner of an instrument used for payment-based measurement. The SI order itself provides only for fines. The product act's imprisonment of up to 2 years in aggravating circumstances attaches to the offences listed in its section 37(1)(1) and (3) to (10) — in practice, for this product area, a breach of the act's own product requirements, a failure to give the control authority information or access, or a failure to comply with its decisions — and units of measurement are inside the product-area band of section 37(2). It does not attach to a breach of the SI order's own rules, and the points that rest on Article 4 and Article 5 of Regulation (EU) 2019/1020 cannot apply here, because the directive is not in the Article 4(5) list.", "keyDates": [ { "date": "1979-12-20", "label": "Council Directive 80/181/EEC adopted, replacing Directive 71/354/EEC and published in OJ L 39 of 15 February 1980", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · title and publication reference; https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:31980L0181 · document information" }, { "date": "1979-12-21", "label": "Entry into force and date of effect of the directive as recorded on EUR-Lex", "source": "https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:31980L0181 · dates, entry into force and date of effect" }, { "date": "1981-06-30", "label": "Deadline for Member States to adopt and publish the laws, regulations and administrative provisions needed to comply, which had to be in place before 1 July 1981, and to inform the Commission", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 7(a)" }, { "date": "1981-10-01", "label": "Member States apply their transposing provisions and Directive 71/354/EEC is repealed", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 6 and Art. 7(a)" }, { "date": "1984-12-20", "label": "Council Directive 85/1/EEC in force: it does three things — it replaces the definition of the metre in Chapter I point 1.1 with the 1983 definition (the length of the path travelled in a vacuum by light during 1/299 792 458 seconds), it adds the millimetre of mercury for blood pressure and the pressure of other body fluids (1 mm Hg = 133,322 Pa) and the barn for effective cross-sectional area (1 b = 10⁻²⁸ m²) to the specialised units of Chapter I point 4 and rewrites the note on prefixes so that they may be used with those units except the millimetre of mercury, with the multiple of 10² ares called a hectare, and it deletes the blood-pressure unit from Chapter II and replaces that chapter's note; Member States had to bring the measures into force on 1 July 1985", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31985L0001 · Art. 1 points 1 to 3 and Art. 2; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table and Annex, Chapter I, point 4, with the M1 change markers; https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:31980L0181 · relationship between documents" }, { "date": "1989-11-30", "label": "Council Directive 89/617/EEC notified and in force: it replaces Article 1(b) and (c) with three points (b), (c) and (d), so the Chapter II units stay legal until a date the Member States concerned fix and the Chapter III units and the new Chapter IV units until dates no later than 31 December 1994 and 31 December 1999, extends the authorisation of supplementary indications in Article 3(2) from 31 December 1989 to 31 December 1999 and deletes Article 3(5), updates the ISO 2955 reference in Article 5 from 1 March 1974 to 15 May 1983, deletes the second subparagraph of Article 6, and in the Annex replaces Chapter II, deletes the fathom from Chapter III and adds Chapter IV; Member States had 24 months from notification", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31989L0617 · Art. 1 points 1 to 5, Art. 2 and Art. 3 with the footnote on notification; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 1(b) to (d), Art. 3, Art. 5, Art. 6 and Annex Chapters II to IV, with the M2 change markers" }, { "date": "1994-12-31", "label": "Last date a Member State could fix for the Chapter III units, the imperial length, area, volume, mass and energy units of Article 1(c); after the date fixed by each State they stopped being legal units", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(c) and Annex, Chapter III" }, { "date": "1999-12-31", "label": "Last date a Member State could fix for the Chapter IV units of Article 1(d), the fathom for marine navigation, the pint and fluid ounce for certain drinks in returnable containers, the gill for spirit drinks, the ounce and pound for goods sold loose in bulk and the therm for gas supply", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(d) and Annex, Chapter IV" }, { "date": "2000-02-09", "label": "Directive 1999/103/EC, adopted on 24 January 2000 despite its 1999 number, in force on the day of publication: it extends the authorisation of supplementary indications in Article 3(2) from 31 December 1999 to 31 December 2009, inserts Article 6a on the further examination of implementation and in particular of supplementary indications under the committee procedure of Article 18 of Directive 71/316/EEC (since Directive 2009/34/EC, its Article 17(1) and the committee of its Article 16), and amends the Annex in Chapter I point 1.1.1 (the Celsius temperature definition), point 1.2.1 (radian and steradian), the prefix table of point 1.3 and point 3 on the electronvolt and the unified atomic mass unit; to be transposed before 9 February 2001", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31999L0103 · recitals 4 and 5, Art. 1 points 1 to 3, Art. 2 and Art. 4; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0034 · Art. 16, Art. 17(1), Art. 20 and Annex IV; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 3(2), Art. 6a and Annex, Chapter I, points 1.1.1, 1.2.1, 1.3 and 3, with the M3 change markers" }, { "date": "2009-05-27", "label": "Directive 2009/3/EC in force: it removes the end date for the Chapter II units and for supplementary indications, rewrites Article 2(a) so the directive is not limited to specific fields of Union action, inserts the Article 6b reporting duty, deletes the acre from Chapter II and rewrites the SI derived units of Chapter I", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 1 to 3 and 10, Art. 1 and Art. 3" }, { "date": "2010-01-01", "label": "Member States apply their measures transposing Directive 2009/3/EC, after a transposition deadline of 31 December 2009", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · Art. 2(1)" }, { "date": "2019-05-20", "label": "The new definitions of the SI base units adopted at the 26th meeting of the General Conference on Weights and Measures in 2018 become effective at international level, based on fixed numerical values of seven defining constants", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · recitals 3 and 4" }, { "date": "2019-08-13", "label": "Commission Directive (EU) 2019/1258 in force: it replaces Chapter I section 1.1 of the Annex with the constant-based definitions of the seven SI base units and the degree Celsius", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · Art. 1, Art. 3 and Annex" }, { "date": "2019-12-31", "label": "Deadline for the Commission report to the European Parliament and the Council on market developments relating to the directive and its implementation, with proposals where appropriate", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 6b" }, { "date": "2020-05-13", "label": "Deadline for Member States to adopt and publish the provisions transposing Commission Directive (EU) 2019/1258", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · Art. 2(1)" }, { "date": "2020-06-13", "label": "Member States apply the provisions transposing Commission Directive (EU) 2019/1258; this is the date of the consolidated version of the directive in force today", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · Art. 2(1); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · consolidated version header" }, { "date": "2021-05-14", "label": "Danish executive order nr. 866 of 11 May 2021 on the international system of units, SI, and other legal units in force, replacing order nr. 618 of 13 May 2020; it repeats the obligation to use the prescribed units, the transport exception, the supplementary indication rules and a fine for breaches", "source": "https://www.retsinformation.dk/eli/lta/2021/866 · § 1 to § 6 and the footnote listing the directives implemented" }, { "date": "2021-07-16", "label": "Regulation (EU) 2019/1020 applies: Directive 80/181/EEC is point 6 of its Annex I, so national market surveillance authorities exercise the regulation's investigation and enforcement powers for it; the directive is in neither the Article 4(5) list nor Annex II", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 2(1), Art. 4(5), Art. 14, Art. 16, Art. 41, Art. 44, Annex I point 6 and Annex II" }, { "date": "2026-01-01", "label": "Sikkerhedsstyrelsen becomes the department Markedsovervågning of Erhvervsstyrelsen and continues the same tasks, including legal metrology", "source": "https://erhvervsstyrelsen.dk/sikkerhedsstyrelsen-en-del-af-erhvervsstyrelsen · version history of 2 December 2025" } ], "amendedBy": [ { "reference": "Council Directive 85/1/EEC", "celex": "31985L0001", "date": "1984-12-20", "summary": "Does three things. It replaces the definition of the unit of length in Chapter I point 1.1 with the 1983 definition — 'A metre is the length of the path travelled in a vacuum by light during 1/299 792 458 seconds' (Seventeenth CGPM (1983), Resolution 1). It adds two units to the specialised-field table of Chapter I point 4, the millimetre of mercury for blood pressure and the pressure of other body fluids (1 mm Hg = 133,322 Pa) and the barn for effective cross-sectional area (1 b = 10⁻²⁸ m²), and replaces the note so that the prefixes of point 1.3 may be used with the units of that table except the millimetre of mercury, the multiple of 10² ares being called a hectare. And it deletes the blood-pressure unit from Chapter II and replaces that chapter's note. Member States had to bring the measures into force on 1 July 1985.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31985L0001 · Art. 1 points 1 to 3 and Art. 2; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table and Annex, Chapter I, point 4, with the M1 change markers" }, { "reference": "Council Directive 89/617/EEC", "celex": "31989L0617", "date": "1989-11-30", "summary": "Replaces points (b) and (c) of Article 1 with three points (b), (c) and (d), so that the Chapter II units stay legal until a date the Member States concerned fix, the Chapter III units until a date no later than 31 December 1994 and the Chapter IV units — a chapter this directive creates — until a date no later than 31 December 1999, in each case only in the Member States where they were authorised on 21 April 1973. In Article 3 it replaces '31 December 1989' by '31 December 1999' in paragraph 2, extending the authorisation of supplementary indications by ten years, and deletes paragraph 5. It updates the ISO 2955 reference in Article 5 from 1 March 1974 to 15 May 1983, and deletes the second subparagraph of Article 6. In the Annex it replaces Chapter II, deletes the fathom from Chapter III and adds Chapter IV. Member States had 24 months from notification, which took place on 30 November 1989.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31989L0617 · Art. 1 points 1 to 5, Art. 2 and Art. 3 with the footnote on notification; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 1(b) to (d), Art. 3, Art. 5, Art. 6 and Annex Chapters II to IV, with the M2 change markers" }, { "reference": "Directive 1999/103/EC", "celex": "31999L0103", "date": "2000-02-09", "summary": "Replaces '31 December 1999' by '31 December 2009' in Article 3(2), extending the authorisation of supplementary indications by a further ten years so that Union exporters could keep marking products for third countries that do not accept metric-only marking. It inserts Article 6a, under which issues concerning implementation and in particular supplementary indications are to be examined further and measures adopted where necessary under the committee procedure of Article 18 of Council Directive 71/316/EEC. Directive 71/316/EEC was repealed by Directive 2009/34/EC, whose Article 20 provides that references to the repealed directive are construed as references to it and read in accordance with the correlation table in its Annex IV; that table makes Article 18(1) of Directive 71/316/EEC into Article 17(1) of Directive 2009/34/EC. The committee is therefore the Committee for Adjustment to Technical Progress of the Directives referred to in Article 16 of Directive 2009/34/EC, and it is the route by which Commission Directive (EU) 2019/1258 was adopted. One limit is worth knowing: the second paragraph of Article 16 of Directive 2009/34/EC excludes from that procedure the chapter of the Annex to the units directive that deals with imperial units of measurement, so the Commission cannot change Chapters II to IV this way — only the Council and Parliament can. And it amends the Annex in four places: the text under the table in Chapter I point 1.1.1 (the Celsius temperature definition), the definitions of the SI supplementary units radian and steradian following the table in point 1.2.1 (ISO 31-1:1992), the prefix table in point 1.3, which runs from yotta to yocto, and point 3 on the electronvolt and the unified atomic mass unit. Adopted on 24 January 2000 despite its 1999 number, in force on the day of publication, and to be transposed before 9 February 2001.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31999L0103 · recitals 4 and 5, Art. 1 points 1 to 3, Art. 2 and Art. 4; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0034 · Art. 16, Art. 17(1), Art. 20 and Annex IV; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · citations and recitals 2 and 8; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 3(2), Art. 6a and Annex, Chapter I, points 1.1.1, 1.2.1, 1.3 and 3, with the M3 change markers" }, { "reference": "Directive 2009/3/EC", "celex": "32009L0003", "date": "2009-05-27", "summary": "Removes the end dates that were pressing on the directive: the Chapter II units stay legal without limit of time in the Member States where they were authorised on 21 April 1973, and supplementary indications are authorised outright instead of only until 31 December 2009. It also rewrites Article 2(a) so that the obligations relate to measuring instruments used, measurements made and indications of quantity expressed in units of measurement, without the earlier link to specific fields of Community action, inserts the Article 6b duty on the Commission to report by 31 December 2019, deletes the acre from Chapter II because it is no longer used for land registration in the United Kingdom and Ireland, and replaces the SI derived unit tables of Chapter I, which include the katal for catalytic activity.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 1, 3, 8 and 10, Art. 1 points 1 to 5 and Art. 2" }, { "reference": "Commission Directive (EU) 2019/1258", "celex": "32019L1258", "date": "2019-08-13", "summary": "Adapts the Annex to technical progress by replacing Chapter I section 1.1 with the definitions the General Conference on Weights and Measures adopted in 2018: the second, metre, kilogram, ampere, kelvin, mole and candela are now defined by fixing the numerical values of the caesium frequency, the speed of light in vacuum, the Planck constant, the elementary charge, the Boltzmann constant, the Avogadro constant and the luminous efficacy of 540 terahertz radiation, with the degree Celsius kept as the special name for the derived unit of temperature.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · recitals 3 to 5, Art. 1, Art. 2, Art. 3 and Annex" } ], "scope": { "appliesTo": [ "Measuring instruments used, measurements made and indications of quantity expressed in units of measurement, wherever they occur; since Directive 2009/3/EC replaced Article 2(a) the directive is no longer tied to particular fields of Union action", "Indications of quantity on a product, its packaging and its label, in its instructions and technical documentation, and in the offers, listings and marketing that carry a size, weight, volume, length, area, capacity or similar figure", "The units themselves: Chapter I of the Annex, built on the seven SI base units, their decimal multiples and submultiples with the twenty prefixes from yotta to yocto, the SI derived units with special names, the litre, tonne and bar, the units defined on the basis of SI units such as the degree, minute, hour and day, the electronvolt and the unified atomic mass unit, the units permitted in specialised fields only and the compound units formed from all of them", "Every party that expresses such an indication: manufacturers and packers, importers, distributors and retailers, service providers, laboratories and public administration" ], "derived": [ "The directive settles which unit may be used, not whether a quantity has to be declared at all or where on the pack it must appear; the sector rules that require a net quantity declaration decide that, and this directive decides only the unit it is expressed in (Art. 1 and Art. 2(a))", "A supplementary indication is one or more indications of quantity in units not contained in Chapter I accompanying an indication in a Chapter I unit; it is authorised without any end date, but the Chapter I indication must predominate and the characters of the other indication must be no larger than those used for the Chapter I figure (Art. 3(1), 3(2) and 3(4))", "Member States may require measuring instruments to bear indications of quantity in a single legal unit; Denmark has not used that option, its SI order repeating only the predominance rule (Art. 3(3); executive order nr. 866/2021, § 3)", "The Chapter II units are legal only in the Member States where they were authorised on 21 April 1973, which recital 1 of Directive 2009/3/EC identifies as the United Kingdom and Ireland. Article 1(b) attaches the exemption to Member States, so within the Union today it is Ireland that the chapter can still reach; the United Kingdom left the Union on 31 January 2020, and whatever status the pint, the mile and the troy ounce have there now is a matter of United Kingdom law and not of this directive. The Danish order reproduces only Chapter I, so none of them is a legal unit in Denmark (Art. 1(b); Directive 2009/3/EC, recitals 1 and 10; executive order nr. 866/2021, Annex 1)", "The Chapter III and Chapter IV units were legal only until a date each Member State fixed, which could not be later than 31 December 1994 and 31 December 1999; those windows have closed (Art. 1(c) and (d))", "The directive does not affect the use in air and sea transport and rail traffic of units other than those it makes compulsory where they are laid down in international conventions or agreements binding the Union or the Member States (Art. 2(b); executive order nr. 866/2021, § 2)", "Units that are not or are no longer legal may still be used for products and equipment already on the market or in service on the date the directive was adopted and for components and parts needed to supplement or replace parts of them, although legal units may be required for the indicators of measuring instruments; the Danish order fixes that cut-off at 1 July 1977 (Art. 4; executive order nr. 866/2021, § 4)" ], "categories": [ { "id": "quantity-on-label", "label": "Indication of quantity on a product, its packaging or its label, such as net contents, capacity, dimensions or dosage" }, { "id": "instructions-and-technical-documentation", "label": "Quantities in instructions for use, manuals, spec sheets, drawings and technical documentation" }, { "id": "advertising-and-online-listings", "label": "Sizes, weights, volumes and other quantity figures in advertising, shelf-edge labels and online product listings" }, { "id": "measuring-instrument-display", "label": "Indication of quantity shown on the display or indicator of a measuring instrument" }, { "id": "official-and-administrative-measurements", "label": "Measurements made and instruments used for public administration, health, safety, laboratory analysis and other official purposes" }, { "id": "supplementary-indication", "label": "A second, non-metric figure shown next to the metric one, for example an imperial value for a third-country market" }, { "id": "chapter-ii-units", "label": "Mile, yard, foot or inch for road traffic signs and distance and speed measurement, pint for draught beer and cider and for milk in returnable containers, troy ounce for transactions in precious metals" }, { "id": "chapter-iii-iv-units", "label": "Other imperial units once allowed under Article 1(c) or 1(d), such as the acre, gallon, quart, gill, fluid ounce, pound, fathom or therm" }, { "id": "air-sea-rail-transport-units", "label": "Units used in air and sea transport or rail traffic under international conventions or agreements, instead of the units the directive makes compulsory" }, { "id": "pre-1980-products", "label": "Products and equipment already on the market or in service when the directive was adopted, and components and parts that supplement or replace parts of them" } ], "roles": [ { "id": "manufacturer", "label": "Manufacturer or packer that sets the quantity indications", "definition": "The directive defines no economic operators. Article 1 obliges legal units to be used for expressing quantities and Article 2(a) attaches that obligation to measuring instruments used, measurements made and indications of quantity expressed in units of measurement, so the duty falls first on the party that decides the figures on the product, its packaging, its instructions and its technical documentation.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a)" }, { "id": "importer", "label": "Importer bringing goods into the Union", "definition": "Whoever brings a product into the Union market carries the same Article 1 obligation for the indications of quantity on what it supplies here; goods prepared for a third-country market often carry a non-metric figure as the governing indication, and Article 4 allows a non-legal unit only for products and equipment already on the market or in service when the directive was adopted and for components and parts that supplement or replace parts of them.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1, Art. 2(a) and Art. 4" }, { "id": "distributor", "label": "Distributor, retailer or online seller", "definition": "Whoever makes the goods available further down the chain and repeats or restates a quantity, on a shelf-edge label, in a listing, in marketing or on a relabelled or repacked unit, expresses an indication of quantity within the meaning of Article 2(a) and must use a Chapter I unit as the predominant figure.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1, Art. 2(a) and Art. 3(4)" }, { "id": "other", "label": "Public administration, health and safety bodies, laboratories and service providers", "definition": "Since Directive 2009/3/EC replaced Article 2(a) the obligations are no longer limited to any specific field of Union action: they relate to measuring instruments used, measurements made and indications of quantity expressed in units of measurement, whoever uses, makes or expresses them, which covers administrative, public-health, safety and laboratory use.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(a)" } ], "rules": [ { "categories": [ "air-sea-rail-transport-units" ], "roles": [ "*" ], "size": "any", "result": "out-of-scope", "note": "The directive does not affect the use in the field of air and sea transport and rail traffic of units other than those it makes compulsory, where those units have been laid down in international conventions or agreements binding the Union or the Member States. The Danish SI order repeats the same exception for shipping, aviation and rail traffic. The exception covers only the units set by such an instrument; everything else the same operator prints still follows Chapter I.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(b); https://www.retsinformation.dk/eli/lta/2021/866 · § 2" }, { "categories": [ "pre-1980-products" ], "roles": [ "*" ], "size": "any", "result": "out-of-scope", "note": "Units that are not or are no longer legal may be used for products and equipment already on the market or in service on the date the directive was adopted, and for components and parts of products and equipment that are needed to supplement or replace components or parts of those products and equipment. Legal units may nevertheless be required for the indicators of measuring instruments. Denmark fixes the cut-off date at 1 July 1977 rather than at the date of adoption. Nothing in this carries over to new production.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 4" }, { "categories": [ "chapter-iii-iv-units" ], "roles": [ "*" ], "size": "any", "result": "out-of-scope", "note": "The units of Chapter III were legal only in the Member States where they were authorised on 21 April 1973 and only until a date fixed by those States, which could not be later than 31 December 1994; the units of Chapter IV under the same conditions until a date no later than 31 December 1999. Both windows have closed, so the acre, gallon, quart, gill, fluid ounce, pound, ounce avoirdupois, square foot, square yard, fathom and therm are no longer legal units anywhere in the Union. They may still appear as supplementary indications next to a Chapter I figure.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(c) and (d), Art. 3 and Annex, Chapters III and IV" }, { "categories": [ "chapter-ii-units" ], "roles": [ "*" ], "size": "any", "result": "depends", "note": "The mile, yard, foot and inch for road traffic signs and distance and speed measurement, the pint for the dispense of draught beer and cider and for milk in returnable containers, and the troy ounce for transactions in precious metals are legal units only in the Member States where they were authorised on 21 April 1973. Recital 1 of Directive 2009/3/EC identifies those exemptions as the ones applied by the United Kingdom and Ireland, and since that directive they carry no end date, because their local character and the limited number of products concerned mean they do not create a barrier to trade. Article 1(b) attaches the exemption to Member States, so within the Union today it is Ireland that the chapter can still reach; the United Kingdom left the Union on 31 January 2020, and whatever status the pint, the mile and the troy ounce have there now is a matter of United Kingdom law and not of this directive. The Danish order reproduces only Chapter I, so none of these is a legal unit in Denmark; outside the Member States concerned they can only be supplementary indications. The acre was removed from Chapter II by Directive 2009/3/EC.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(b) and Annex, Chapter II; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 1 and 10 and Art. 1(1); https://www.retsinformation.dk/eli/lta/2021/866 · bilag 1" }, { "categories": [ "supplementary-indication" ], "roles": [ "manufacturer", "importer", "distributor", "other" ], "size": "any", "result": "depends", "note": "A supplementary indication, one or more indications of quantity in units not contained in Chapter I accompanying an indication in a Chapter I unit, is authorised, and since Directive 2009/3/EC there is no expiry date on that authorisation; the point is to let Union exporters mark products for third countries that require other units, and to let new metric units developed internationally be introduced gradually. It is lawful only on two conditions: the Chapter I indication must predominate, and the indications in units not listed in Chapter I must be expressed in characters no larger than those of the corresponding Chapter I indication. A Member State may also require measuring instruments to bear indications in a single legal unit, which Denmark has not done. A non-metric figure printed on its own, without the Chapter I figure beside it, is not a supplementary indication and is not allowed.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1) to 3(4); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 3 and 6 and Art. 1(3); https://www.retsinformation.dk/eli/lta/2021/866 · § 3" }, { "categories": [ "quantity-on-label", "instructions-and-technical-documentation", "advertising-and-online-listings", "measuring-instrument-display", "official-and-administrative-measurements" ], "roles": [ "manufacturer", "importer", "distributor", "other" ], "size": "any", "result": "in-scope", "note": "Legal units of measurement must be used for expressing quantities, and the obligation relates to measuring instruments used, measurements made and indications of quantity expressed in units of measurement, with no threshold for company size and no limit to a particular surface or field of activity. In practice the governing figure must be a Chapter I unit: metre, kilogram, second, ampere, kelvin, mole or candela and the units built from them, their decimal multiples formed with the twenty prefixes from yotta to yocto, the litre, tonne and bar, the degree, minute, hour and day, and the units permitted in specialised fields only. The directive decides the unit, not whether a quantity must be declared or where; that is left to the sector rules. In Denmark the SI order repeats the obligation and the writing rules of its Annex 2 may be used.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(a), Art. 2(a) and Annex, Chapter I, points 1 to 5; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2); https://www.retsinformation.dk/eli/lta/2021/866 · § 1 and § 3, stk. 4" }, { "categories": [ "*" ], "roles": [ "*" ], "size": "any", "result": "depends", "note": "Whether the legal-unit rule bites turns on whether what you are looking at is an indication of quantity expressed in a unit of measurement, a measurement made or a measuring instrument used, on whether the unit belongs to Chapter I or to one of the restricted chapters, on the Member State the goods are placed on the market in, and on whether a non-metric figure stands alone or accompanies a predominant metric one.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1, Art. 2, Art. 3 and Art. 4" } ] }, "obligations": { "manufacturer": [ { "text": "Express every quantity on the product, its packaging, its label, its instructions and its technical documentation in a legal unit of measurement, that is a unit of Chapter I of the Annex, unless one of the restricted chapters or the transport exception applies to that specific case.", "id": "uomd-mfr-express-quantity-product", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a)" }, { "text": "Build the figures on the seven SI base units, the second, metre, kilogram, ampere, kelvin, mole and candela, and on the units derived from them: the SI derived units with special names from the radian to the katal, the degree Celsius, the decimal multiples formed with the twenty prefixes from yotta to yocto, and the specially authorised names litre, tonne and bar.", "id": "uomd-mfr-build-figures-seven", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, points 1.1 to 1.4" }, { "text": "Use the units permitted in specialised fields only inside those fields: the dioptre for the vergency of optical systems, the metric carat for the mass of precious stones, the are for the area of farmland and building land, the tex for the mass per unit length of textile yarns and threads, the millimetre of mercury for blood pressure and the pressure of other body fluids, and the barn for effective cross-sectional area.", "id": "uomd-mfr-use-units-permitted", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, point 4" }, { "text": "Where a non-metric figure is kept for an export market or a familiar audience, present it as a supplementary indication next to the Chapter I figure, let the Chapter I indication predominate and print the other indication in characters no larger than those of the corresponding Chapter I indication.", "id": "uomd-mfr-present-supplementary-indication", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1), 3(2) and 3(4)" }, { "text": "Follow the composition rules of the Annex: form the multiples and submultiples of the unit of mass by attaching prefixes to the word gram and their symbols to the symbol g, attach a prefix to the numerator, the denominator or both parts of a unit written as a fraction, and never use compound prefixes formed by juxtaposing several prefixes.", "id": "uomd-mfr-follow-composition-rules", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, point 1.3" }, { "text": "Where the indication appears on the display or indicator of a measuring instrument, check whether the Member State has required indications of quantity in a single legal unit; in Denmark the SI order makes clear which SI unit is meant and offers the writing rules of its Annex 2, and legal units may be required for the indicators of measuring instruments even for old equipment covered by the Article 4 exception.", "id": "uomd-mfr-check-whether-member", "kind": "data", "level": "product-market", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(3) and Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 3, stk. 4, and bilag 2" }, { "text": "Treat the unit question as separate from the declaration question: the sector rules decide whether a net quantity or a dimension has to be declared and in what form, this directive decides only the unit the figure is expressed in, so read the two together rather than in isolation.", "id": "uomd-mfr-treat-unit-question", "kind": "decision", "level": "product", "timing": "before-market", "retired": "2026-09-24", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a)" } ], "importer": [ { "text": "Before placing goods on the Union market, check every quantity indication that travels with them, on the product, the packaging, the label, the manual and the accompanying documents, and correct any figure that is not expressed in a legal unit.", "id": "uomd-imp-check-quantity-indication", "kind": "verification", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a)" }, { "text": "For goods prepared for a third-country market, do not simply keep the non-metric figure: either replace it with a Chapter I figure or add the Chapter I figure and make it the predominant one, with the non-metric characters no larger.", "id": "uomd-imp-simply-keep-non-metric", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1) and 3(4)" }, { "text": "Do not rely on the Article 4 grandfathering unless it actually fits: it covers products and equipment already on the market or in service when the directive was adopted, and components and parts needed to supplement or replace parts of those products, and in Denmark is written as goods and equipment already placed on the market or taken into use before 1 July 1977.", "id": "uomd-imp-rely-article-grandfathering", "kind": "status", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 4" }, { "text": "Do not treat the Chapter II units as generally available: the mile, yard, foot, inch, pint and troy ounce are legal units only in the Member States that authorised them on 21 April 1973, and the Danish order reproduces Chapter I only.", "id": "uomd-imp-treat-chapter-units", "kind": "data", "level": "product-market", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(b) and Annex, Chapter II; https://www.retsinformation.dk/eli/lta/2021/866 · bilag 1" }, { "text": "Cooperate with the market surveillance authority: since 16 July 2021 the directive is point 6 of Annex I to Regulation (EU) 2019/1020, so the authority can require information and documents, carry out checks, require corrective action, prevent the product from being made available and have it withdrawn, recalled or destroyed.", "id": "uomd-imp-cooperate-market-surveillance", "kind": "standing", "level": "company", "timing": "ongoing", "sharedKey": "authority-cooperation", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 2(1), Art. 14, Art. 16 and Annex I point 6" } ], "distributor": [ { "text": "Make sure that shelf-edge labels, catalogues, online listings and marketing copy aimed at end users in the Union give sizes, weights, volumes, capacities and other quantities in legal units; the obligation follows the indication of quantity, not the surface it appears on.", "id": "uomd-dist-make-sure-shelf-edge", "kind": "data", "level": "product", "timing": "at-listing", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2)" }, { "text": "When you relabel, repack or split a product, carry the legal unit across to the new label and keep any non-metric figure subordinate to it, in characters no larger than the corresponding Chapter I indication.", "id": "uomd-dist-repack-split-product", "kind": "data", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1) and 3(4)" }, { "text": "Do not restate a supplier's quantity in a unit of your own choosing, and do not convert a metric figure into a non-metric one as the only indication; a non-metric figure standing alone is not a supplementary indication.", "id": "uomd-dist-restate-suppliers-quantity", "kind": "data", "level": "product", "timing": "at-listing", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1) and 3(2)" }, { "text": "Where a Danish customer is buying on the basis of a measurement, remember that the control authority can order the owner of the measuring instrument to bring it into conformity and can forbid its use where payment is based on the measurement.", "id": "uomd-dist-remember-control-authority", "kind": "evidence", "level": "product", "timing": "on-event", "retired": "2026-09-24", "source": "https://www.retsinformation.dk/eli/lta/2026/22 · § 16 a" }, { "text": "Keep an eye on whether the goods are destined for a Member State where the Chapter II units are still legal; outside those States the mile, pint and troy ounce may appear only as supplementary indications.", "id": "uomd-dist-keep-eye-whether", "kind": "verification", "level": "product-market", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(b) and Art. 3; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 1" } ], "other": [ { "text": "Public administration, health and safety bodies, laboratories and service providers use legal units for the instruments they use, the measurements they make and the quantities they state; since Directive 2009/3/EC rewrote Article 2(a) the obligation is not limited to any specific field of Union action.", "id": "uomd-oth-public-administration-health", "kind": "standing", "level": "company", "timing": "ongoing", "retired": "2026-09-24", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(a)" }, { "text": "Medical and clinical use follows the same Annex: the millimetre of mercury remains legal for blood pressure and the pressure of other body fluids, and it is the one specialised unit that may not be combined with a prefix.", "id": "uomd-oth-medical-clinical-use", "kind": "data", "level": "product", "timing": "before-market", "retired": "2026-09-24", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, point 4 and its note" }, { "text": "Laboratories may use the units whose values in SI are obtained experimentally, the electronvolt for energy and the unified atomic mass unit for mass, with the prefixes of point 1.3, and the katal for catalytic activity, which the General Conference on Weights and Measures adopted in 1999 to give medicine and biochemistry one harmonised unit.", "id": "uomd-oth-laboratories-use-units", "kind": "standing", "level": "company", "timing": "ongoing", "retired": "2026-09-24", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, points 1.2.3 and 3; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 8" }, { "text": "In air and sea transport and rail traffic, units other than the compulsory ones may be used where they are laid down in international conventions or agreements binding the Union or the Member States; the exception is limited to those units and does not open the door to non-metric labelling generally.", "id": "uomd-oth-units-other-compulsory", "kind": "status", "level": "product", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(b); https://www.retsinformation.dk/eli/lta/2021/866 · § 2" }, { "text": "Where an authorised representative or another party answers for a product in the Union, note that Directive 80/181/EEC is not in the Article 4(5) list of Regulation (EU) 2019/1020, so that regulation's duty to have an economic operator established in the Union does not follow from this directive; it may still follow from another act that applies to the same product.", "id": "uomd-oth-note-directive-181", "kind": "status", "level": "company", "timing": "before-market", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 4(1) and Art. 4(5)" } ] }, "requirements": [ { "id": "uomd-mfr-express-quantity-product", "role": "manufacturer", "kind": "data", "level": "product", "timing": "before-market", "text": "Express every quantity on the product, its packaging, its label, its instructions and its technical documentation in a legal unit of measurement, that is a unit of Chapter I of the Annex, unless one of the restricted chapters or the transport exception applies to that specific case.", "article": "Art. 1 and Art. 2(a)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-build-figures-seven", "role": "manufacturer", "kind": "data", "level": "product", "timing": "before-market", "text": "Build the figures on the seven SI base units, the second, metre, kilogram, ampere, kelvin, mole and candela, and on the units derived from them: the SI derived units with special names from the radian to the katal, the degree Celsius, the decimal multiples formed with the twenty prefixes from yotta to yocto, and the specially authorised names litre, tonne and bar.", "article": "Annex, Chapter I, points 1.1 to 1.4", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-use-units-permitted", "role": "manufacturer", "kind": "data", "level": "product", "timing": "before-market", "text": "Use the units permitted in specialised fields only inside those fields: the dioptre for the vergency of optical systems, the metric carat for the mass of precious stones, the are for the area of farmland and building land, the tex for the mass per unit length of textile yarns and threads, the millimetre of mercury for blood pressure and the pressure of other body fluids, and the barn for effective cross-sectional area.", "article": "Annex, Chapter I, point 4", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-present-supplementary-indication", "role": "manufacturer", "kind": "data", "level": "product", "timing": "before-market", "text": "Where a non-metric figure is kept for an export market or a familiar audience, present it as a supplementary indication next to the Chapter I figure, let the Chapter I indication predominate and print the other indication in characters no larger than those of the corresponding Chapter I indication.", "article": "Art. 3(1), 3(2) and 3(4)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-follow-composition-rules", "role": "manufacturer", "kind": "data", "level": "product", "timing": "before-market", "text": "Follow the composition rules of the Annex: form the multiples and submultiples of the unit of mass by attaching prefixes to the word gram and their symbols to the symbol g, attach a prefix to the numerator, the denominator or both parts of a unit written as a fraction, and never use compound prefixes formed by juxtaposing several prefixes.", "article": "Annex, Chapter I, point 1.3", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-check-whether-member", "role": "manufacturer", "kind": "data", "level": "product-market", "timing": "before-market", "text": "Where the indication appears on the display or indicator of a measuring instrument, check whether the Member State has required indications of quantity in a single legal unit; in Denmark the SI order makes clear which SI unit is meant and offers the writing rules of its Annex 2, and legal units may be required for the indicators of measuring instruments even for old equipment covered by the Article 4 exception.", "article": "Art. 3(3) and Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 3, stk. 4, and bilag 2", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-mfr-treat-unit-question", "role": "manufacturer", "kind": "decision", "level": "product", "timing": "before-market", "retired": "2026-09-24", "text": "Treat the unit question as separate from the declaration question: the sector rules decide whether a net quantity or a dimension has to be declared and in what form, this directive decides only the unit the figure is expressed in, so read the two together rather than in isolation.", "article": "Art. 1 and Art. 2(a)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-imp-check-quantity-indication", "role": "importer", "kind": "verification", "level": "product", "timing": "before-market", "text": "Before placing goods on the Union market, check every quantity indication that travels with them, on the product, the packaging, the label, the manual and the accompanying documents, and correct any figure that is not expressed in a legal unit.", "article": "Art. 1 and Art. 2(a)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-imp-simply-keep-non-metric", "role": "importer", "kind": "data", "level": "product", "timing": "before-market", "text": "For goods prepared for a third-country market, do not simply keep the non-metric figure: either replace it with a Chapter I figure or add the Chapter I figure and make it the predominant one, with the non-metric characters no larger.", "article": "Art. 3(1) and 3(4)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-imp-rely-article-grandfathering", "role": "importer", "kind": "status", "level": "product", "timing": "before-market", "text": "Do not rely on the Article 4 grandfathering unless it actually fits: it covers products and equipment already on the market or in service when the directive was adopted, and components and parts needed to supplement or replace parts of those products, and in Denmark is written as goods and equipment already placed on the market or taken into use before 1 July 1977.", "article": "Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 4", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-imp-treat-chapter-units", "role": "importer", "kind": "data", "level": "product-market", "timing": "before-market", "text": "Do not treat the Chapter II units as generally available: the mile, yard, foot, inch, pint and troy ounce are legal units only in the Member States that authorised them on 21 April 1973, and the Danish order reproduces Chapter I only.", "article": "Art. 1(b) and Annex, Chapter II; https://www.retsinformation.dk/eli/lta/2021/866 · bilag 1", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-imp-cooperate-market-surveillance", "role": "importer", "kind": "standing", "level": "company", "timing": "ongoing", "sharedKey": "authority-cooperation", "text": "Cooperate with the market surveillance authority: since 16 July 2021 the directive is point 6 of Annex I to Regulation (EU) 2019/1020, so the authority can require information and documents, carry out checks, require corrective action, prevent the product from being made available and have it withdrawn, recalled or destroyed.", "article": "Art. 2(1), Art. 14, Art. 16 and Annex I point 6", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020" }, { "id": "uomd-dist-make-sure-shelf-edge", "role": "distributor", "kind": "data", "level": "product", "timing": "at-listing", "text": "Make sure that shelf-edge labels, catalogues, online listings and marketing copy aimed at end users in the Union give sizes, weights, volumes, capacities and other quantities in legal units; the obligation follows the indication of quantity, not the surface it appears on.", "article": "Art. 1 and Art. 2(a); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-dist-repack-split-product", "role": "distributor", "kind": "data", "level": "product", "timing": "before-market", "text": "When you relabel, repack or split a product, carry the legal unit across to the new label and keep any non-metric figure subordinate to it, in characters no larger than the corresponding Chapter I indication.", "article": "Art. 3(1) and 3(4)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-dist-restate-suppliers-quantity", "role": "distributor", "kind": "data", "level": "product", "timing": "at-listing", "text": "Do not restate a supplier's quantity in a unit of your own choosing, and do not convert a metric figure into a non-metric one as the only indication; a non-metric figure standing alone is not a supplementary indication.", "article": "Art. 3(1) and 3(2)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-dist-remember-control-authority", "role": "distributor", "kind": "evidence", "level": "product", "timing": "on-event", "retired": "2026-09-24", "text": "Where a Danish customer is buying on the basis of a measurement, remember that the control authority can order the owner of the measuring instrument to bring it into conformity and can forbid its use where payment is based on the measurement.", "article": "§ 16 a", "sourceUrl": "https://www.retsinformation.dk/eli/lta/2026/22" }, { "id": "uomd-dist-keep-eye-whether", "role": "distributor", "kind": "verification", "level": "product-market", "timing": "before-market", "text": "Keep an eye on whether the goods are destined for a Member State where the Chapter II units are still legal; outside those States the mile, pint and troy ounce may appear only as supplementary indications.", "article": "Art. 1(b) and Art. 3; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 1", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-oth-public-administration-health", "role": "other", "kind": "standing", "level": "company", "timing": "ongoing", "retired": "2026-09-24", "text": "Public administration, health and safety bodies, laboratories and service providers use legal units for the instruments they use, the measurements they make and the quantities they state; since Directive 2009/3/EC rewrote Article 2(a) the obligation is not limited to any specific field of Union action.", "article": "recital 2 and Art. 1(2); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(a)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003" }, { "id": "uomd-oth-medical-clinical-use", "role": "other", "kind": "data", "level": "product", "timing": "before-market", "retired": "2026-09-24", "text": "Medical and clinical use follows the same Annex: the millimetre of mercury remains legal for blood pressure and the pressure of other body fluids, and it is the one specialised unit that may not be combined with a prefix.", "article": "Annex, Chapter I, point 4 and its note", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-oth-laboratories-use-units", "role": "other", "kind": "standing", "level": "company", "timing": "ongoing", "retired": "2026-09-24", "text": "Laboratories may use the units whose values in SI are obtained experimentally, the electronvolt for energy and the unified atomic mass unit for mass, with the prefixes of point 1.3, and the katal for catalytic activity, which the General Conference on Weights and Measures adopted in 1999 to give medicine and biochemistry one harmonised unit.", "article": "Annex, Chapter I, points 1.2.3 and 3; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 8", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-oth-units-other-compulsory", "role": "other", "kind": "status", "level": "product", "timing": "before-market", "text": "In air and sea transport and rail traffic, units other than the compulsory ones may be used where they are laid down in international conventions or agreements binding the Union or the Member States; the exception is limited to those units and does not open the door to non-metric labelling generally.", "article": "Art. 2(b); https://www.retsinformation.dk/eli/lta/2021/866 · § 2", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "id": "uomd-oth-note-directive-181", "role": "other", "kind": "status", "level": "company", "timing": "before-market", "text": "Where an authorised representative or another party answers for a product in the Union, note that Directive 80/181/EEC is not in the Article 4(5) list of Regulation (EU) 2019/1020, so that regulation's duty to have an economic operator established in the Union does not follow from this directive; it may still follow from another act that applies to the same product.", "article": "Art. 4(1) and Art. 4(5)", "sourceUrl": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020" } ], "requirementsHash": "9262387ce9711b6d", "penalties": { "text": "The directive itself lays down no penalties and no enforcement procedure. Article 7 requires Member States to adopt, publish and apply the laws, regulations and administrative provisions needed to comply with it, and to inform the Commission of them and of any draft measures in the field, so the sanction sits in national law. Since 16 July 2021 the surveillance side rests on Regulation (EU) 2019/1020: the directive is point 6 of its Annex I, which makes it Union harmonisation legislation for the purposes of the regulation, so market surveillance authorities hold the Article 14 powers to require documents and information, carry out checks and enter premises, and the Article 16 measures to require corrective action, to prevent the product being made available, to withdraw, recall or destroy it, to set prior conditions for making it available and to warn end users. The directive is not listed in Annex II to that regulation, so the Article 41 duty to lay down penalties for infringements does not reach it through the regulation, and it is not in the Article 4(5) list either. In Denmark, executive order nr. 866 of 11 May 2021 punishes with a fine a breach of the duty to use the prescribed units and of the predominance rule, and fines anyone who intentionally or through gross negligence states an SI unit in a way designed to mislead, with criminal liability for companies under chapter 5 of the criminal code; the order is issued under section 18(1) and section 23(3) of act nr. 1518 of 18 December 2018 on business promotion, whose section 18(1) then required the minister to make rules on metrology, including which units of measurement apply. That power has since moved: act nr. 782 of 4 May 2021 transferred metrology to the product act with effect from 1 July 2021, where the minister's rule-making power for units of measurement is now section 8a and units of measurement are product area nr. 19 of section 2(1). Section 7(1) of act nr. 782/2021 keeps rules made under chapter 8 of the business promotion act in force until they are repealed or replaced by rules made under the product act, which is why order nr. 866/2021 — issued seven weeks before the transfer took effect — still stands, and why section 18 of the current consolidation of the business promotion act (LBK nr. 230 of 29 February 2024) no longer contains a metrology power at all. So the two instruments are not two parallel regimes but a transition: the order is the substantive rule, the product act supplies the control authority, the powers and the penalties. The product act names Erhvervsstyrelsen as the control authority and lets it warn users, stop misleading marketing, order the fault remedied, stop sales, order withdrawal, recall or destruction, prohibit placing on the market, making available, supply or putting into use, and order the owner of an instrument used for payment-based measurement to bring it into conformity or forbid its use; breaches of those decisions are fined and, in aggravating circumstances, punished with imprisonment of up to 2 years. Since January 2026 Sikkerhedsstyrelsen is the department Markedsovervågning of Erhvervsstyrelsen.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 7; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 2(1), Art. 4(5), Art. 14, Art. 16, Art. 41, Annex I point 6 and Annex II; https://www.retsinformation.dk/eli/lta/2021/866 · preamble and § 5; https://www.retsinformation.dk/eli/lta/2018/1518 · § 18, stk. 1, and § 23, stk. 3; https://www.retsinformation.dk/eli/lta/2021/782 · § 6, stk. 2, and § 7, stk. 1; https://www.retsinformation.dk/eli/lta/2024/230 · § 18 and § 23, stk. 3; https://www.retsinformation.dk/eli/lta/2026/22 · § 2, stk. 1, nr. 19, § 8 a, § 9, § 14, § 16, § 16 a and § 37; https://erhvervsstyrelsen.dk/sikkerhedsstyrelsen-en-del-af-erhvervsstyrelsen" }, "checklist": [ "List every place a measured quantity appears for a given product: net contents, dimensions, capacity, dosage, area, mass per length, pressure, energy, on the pack, on the label, in the manual, in the spec sheet, on the shelf edge and in the online listing.", "Make the governing figure a Chapter I unit in each of those places, built on the seven SI base units and the units derived from them, and use the specialised units such as the dioptre, metric carat, are, tex, millimetre of mercury and barn only within their own field (Annex, Chapter I, points 1 and 4).", "Where a non-metric figure is kept, print it as a supplementary indication beside the metric one, keep the metric indication predominant and keep the non-metric characters no larger than the corresponding metric ones (Article 3(1) and 3(4)).", "Check the composition rules: mass multiples are formed on the word gram and the symbol g, a prefix may sit in the numerator or the denominator of a fraction unit or in both, and compound prefixes are not allowed (Annex, Chapter I, point 1.3).", "Treat the mile, yard, foot, inch, pint and troy ounce as legal units only in the Member States that authorised them on 21 April 1973, and the acre, gallon, quart, gill, fluid ounce, pound, fathom and therm as no longer legal anywhere, since the Article 1(c) and 1(d) windows closed at the end of 1994 and 1999.", "Confirm whether the Member State you sell into has required measuring instruments to carry a single legal unit under Article 3(3); Denmark has not, and its SI order instead asks that the SI unit be stated clearly and offers writing rules for symbols and compound units.", "Keep the air, sea and rail exception to what it says: units other than the compulsory ones are allowed there only where an international convention or agreement binding the Union or the Member States lays them down (Article 2(b)).", "Do not stretch the Article 4 grandfathering: it covers products and equipment already on the market or in service when the directive was adopted and the parts that supplement or replace parts of them, with 1 July 1977 as the Danish cut-off, and legal units may still be required for the indicators of measuring instruments.", "Check that the technical documentation, drawings and calculations that support a declaration of conformity under another act use the same legal units as the pack, since the obligation also covers measurements made and instruments used.", "Read this directive together with the sector rules that decide whether and how a quantity must be declared; those rules set the declaration, this one sets the unit." ], "faq": [ { "q": "Which units of measurement are legal in the EU?", "a": "The units of Chapter I of the Annex. They start from the seven SI base units, the second, metre, kilogram, ampere, kelvin, mole and candela, add the degree Celsius and the SI derived units with special names, twenty-one of them from the radian and steradian through the newton, pascal, joule, watt, volt, ohm, farad, weber, tesla, henry, lumen, lux, becquerel, gray and sievert to the katal, and allow the decimal multiples and submultiples formed with the twenty prefixes from yotta to yocto. Chapter I also carries the specially authorised litre, tonne and bar, the units defined on the basis of SI units that are not decimal multiples of them, the revolution, grade or gon, degree, minute and second of angle, minute, hour and day, the electronvolt and the unified atomic mass unit whose values are obtained experimentally, the six units permitted in specialised fields only, the dioptre, metric carat, are, tex, millimetre of mercury and barn, and every compound unit formed by combining them.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(a) and Annex, Chapter I, points 1 to 5" }, { "q": "Can I still show inches, pounds or fluid ounces next to the metric figure?", "a": "Yes. A supplementary indication, meaning one or more indications of quantity in units not contained in Chapter I accompanying an indication in a Chapter I unit, is authorised, and Directive 2009/3/EC removed the end date of 31 December 2009 that used to hang over it, so the authorisation now runs without a time limit. The reason given is to avoid obstacles for Union undertakings exporting to third countries that require other units, and to let new metric units developed internationally be introduced gradually. Two conditions apply: the Chapter I indication must predominate, and the indications in units not listed in Chapter I must be in characters no larger than those of the corresponding Chapter I indication. A non-metric figure printed on its own is not a supplementary indication.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 3(1), 3(2) and 3(4); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 3 and 6 and Art. 1(3)" }, { "q": "Did the pint, the mile and the troy ounce have to disappear?", "a": "No. Article 1(b) makes the Chapter II units legal in those Member States where they were authorised on 21 April 1973: the mile, yard, foot and inch for road traffic signs and distance and speed measurement, the pint for the dispense of draught beer and cider and for milk in returnable containers, and the troy ounce for transactions in precious metals. Directive 2009/3/EC removed the requirement on those States to fix an end date, noting that the exemptions concerned the United Kingdom and Ireland and that their local character and the limited number of products meant they were no barrier to trade; the same directive deleted the acre from Chapter II, because it was no longer used for land registration there. Article 1(b) attaches the exemption to Member States, so within the Union today it is Ireland that the chapter can still reach; the United Kingdom left the Union on 31 January 2020, and whatever status the pint, the mile and the troy ounce have there now is a matter of United Kingdom law and not of this directive. The units of Chapters III and IV were different: they could only run until a date each Member State fixed, no later than 31 December 1994 and 31 December 1999.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1(b) to 1(d) and Annex, Chapters II to IV; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 1 and 10 and Art. 1(1)" }, { "q": "What changed with the 2019 redefinition of the SI base units?", "a": "Commission Directive (EU) 2019/1258 replaced section 1.1 of Chapter I with the definitions the General Conference on Weights and Measures adopted at its 26th meeting in 2018, effective internationally from 20 May 2019. The seven base units are now fixed by the numerical values of seven defining constants: the caesium frequency of 9 192 631 770 hertz for the second, the speed of light in vacuum of 299 792 458 metres per second for the metre, the Planck constant of 6,626 070 15 times 10 to the power minus 34 joule second for the kilogram, the elementary charge of 1,602 176 634 times 10 to the power minus 19 coulomb for the ampere, the Boltzmann constant of 1,380 649 times 10 to the power minus 23 joule per kelvin for the kelvin, the Avogadro number of 6,022 140 76 times 10 to the power 23 entities for the mole, and a luminous efficacy of 683 lumen per watt at 540 terahertz for the candela. Member States had to transpose it by 13 May 2020 and apply it from 13 June 2020, deliberately on the same date everywhere. The names, symbols and values of the units did not change, only the way they are defined.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · recitals 3 to 7, Art. 2 and Annex; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Annex, Chapter I, point 1.1" }, { "q": "Does the directive apply to advertising and online listings, or only to labels?", "a": "It is not written by surface. Article 1 says legal units must be used for expressing quantities, and Article 2(a), as replaced by Directive 2009/3/EC, ties the obligation to measuring instruments used, measurements made and indications of quantity expressed in units of measurement. Recital 2 of that directive says explicitly that the scope is not limited to any specific field of Community action, which is why the earlier reading limiting it to economic, public-health, safety and administrative purposes no longer matches the text. A size, weight or volume figure in a listing, in a catalogue, on a shelf-edge label or in marketing copy is an indication of quantity like the one on the pack. What the directive does not do is decide whether a quantity must be declared at all, or where; that is for the sector rules.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 and Art. 2(a); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recital 2 and Art. 1(2)" }, { "q": "Are there exceptions for air, sea and rail transport?", "a": "Yes, one. Article 2(b) says the directive does not affect the use in the field of air and sea transport and rail traffic of units, other than those it makes compulsory, which have been laid down in international conventions or agreements binding the Union or the Member States. The Danish SI order repeats the same exception for shipping, aviation and rail traffic. The exception is limited to the units those instruments lay down: it does not make non-metric labelling generally lawful for a transport operator, and everything else that operator states in a unit of measurement still follows Chapter I.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 2(b); https://www.retsinformation.dk/eli/lta/2021/866 · § 2" }, { "q": "What about equipment that was already in use before the rules came in?", "a": "Article 4 authorises units that are not or are no longer legal for products and equipment already on the market or in service on the date the directive was adopted, and for components and parts of products and equipment that are necessary to supplement or replace components or parts of those products and equipment. Legal units may nevertheless be required for the indicators of measuring instruments. Denmark writes the same rule with a fixed date, allowing non-prescribed units for goods and equipment placed on the market or taken into use before 1 July 1977 and for the loose parts and components that supplement or replace parts of them. None of this reaches new production, and none of it excuses a non-metric figure on a product placed on the market today.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 4; https://www.retsinformation.dk/eli/lta/2021/866 · § 4" }, { "q": "Who enforces the units rules in Denmark and what are the penalties?", "a": "The directive has no enforcement or penalty article; Article 7 leaves that to national law, and since 16 July 2021 national authorities act with the powers of Regulation (EU) 2019/1020, which lists the directive as point 6 of its Annex I. In Denmark the rules are in executive order nr. 866 of 11 May 2021 on the international system of units, SI, and other legal units, issued by Sikkerhedsstyrelsen under section 18(1) and section 23(3) of act nr. 1518 of 18 December 2018 on business promotion, whose section 18(1) then required the minister to make rules on metrology, including which units of measurement apply. That power has since moved: act nr. 782 of 4 May 2021 transferred metrology to the product act with effect from 1 July 2021, where the minister's rule-making power for units of measurement is now section 8a and units of measurement are product area nr. 19 of section 2(1). Section 7(1) of act nr. 782/2021 keeps rules made under chapter 8 of the business promotion act in force until they are repealed or replaced by rules made under the product act, which is why order nr. 866/2021 — issued seven weeks before the transfer took effect — still stands, and why section 18 of the current consolidation of the business promotion act (LBK nr. 230 of 29 February 2024) no longer contains a metrology power at all. So the two instruments are not two parallel regimes but a transition: the order is the substantive rule, the product act supplies the control authority, the powers and the penalties. The order fines breaches of the duty to use the prescribed units and of the predominance rule, and fines anyone who intentionally or through gross negligence states an SI unit so as to mislead. The product act names Erhvervsstyrelsen as the control authority, which may delegate metrology control, and gives it orders to warn, stop misleading marketing, remedy, stop sales, withdraw, recall or destroy, prohibitions, and orders to the owner of an instrument used for payment-based measurement. The SI order itself provides only for fines. The product act's imprisonment of up to 2 years in aggravating circumstances attaches to the offences listed in its section 37(1)(1) and (3) to (10) — in practice, for this product area, a breach of the act's own product requirements, a failure to give the control authority information or access, or a failure to comply with its decisions — and units of measurement are inside the product-area band of section 37(2). It does not attach to a breach of the SI order's own rules, and the points that rest on Article 4 and Article 5 of Regulation (EU) 2019/1020 cannot apply here, because the directive is not in the Article 4(5) list. Since January 2026 Sikkerhedsstyrelsen is the department Markedsovervågning of Erhvervsstyrelsen.", "source": "https://www.retsinformation.dk/eli/lta/2021/866 · preamble and § 5; https://www.retsinformation.dk/eli/lta/2018/1518 · § 18, stk. 1, and § 23, stk. 3; https://www.retsinformation.dk/eli/lta/2021/782 · § 6, stk. 2, and § 7, stk. 1; https://www.retsinformation.dk/eli/lta/2024/230 · § 18 and § 23, stk. 3; https://www.retsinformation.dk/eli/lta/2026/22 · § 2, stk. 1, nr. 19, § 8 a, § 9, § 9 a, § 14, § 16, § 16 a and § 37; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 4(5); https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Annex I point 6; https://erhvervsstyrelsen.dk/sikkerhedsstyrelsen-en-del-af-erhvervsstyrelsen" } ], "changelog": [ { "date": "2026-09-13", "kind": "guidance", "title": "Guide rebuilt on the SPEC-62 model from the consolidated directive text", "summary": "The guide was rewritten from the consolidated text of 13 June 2020, Directive 2009/3/EC, Commission Directive (EU) 2019/1258, Regulation (EU) 2019/1020, the Danish SI order nr. 866/2021 and the Danish product act. Four statements in the earlier text are corrected: the scope is no longer the economic, public-health, safety and administrative purposes of the pre-2009 Article 2(a) but measuring instruments used, measurements made and indications of quantity expressed in units of measurement; supplementary indications are governed by the predominance rule and the character-size rule of Article 3(4) rather than by a general prominence test; the Danish authority is Erhvervsstyrelsen as control authority with Sikkerhedsstyrelsen as its department Markedsovervågning since January 2026, under the SI order and the product act, not Sikkerhedsstyrelsen in the abstract; and the guide now sets out the restricted Chapters II, III and IV, the air, sea and rail exception of Article 2(b) and the Article 4 grandfathering, none of which the earlier text mentioned.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 1 to Art. 4 and Annex, Chapters I to IV" }, { "date": "2021-07-16", "kind": "applies", "title": "Regulation (EU) 2019/1020 applies to the directive as Annex I legislation", "summary": "Directive 80/181/EEC is point 6 of Annex I to Regulation (EU) 2019/1020, which makes it Union harmonisation legislation for the purposes of that regulation, so national market surveillance authorities exercise its Article 14 powers and Article 16 measures for units of measurement. The directive is not in the Article 4(5) list, so the duty to have an economic operator established in the Union does not follow from it, and it is not in Annex II, so the Article 41 penalty duty does not reach it through the regulation.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020 · Art. 2(1), Art. 4(5), Art. 14, Art. 16, Art. 41, Art. 44, Annex I point 6 and Annex II" }, { "date": "2021-05-14", "kind": "applies", "title": "Danish executive order nr. 866/2021 on the SI and other legal units in force", "summary": "The order replaces order nr. 618 of 13 May 2020 and implements the directive as amended through 2019/1258. It requires prescribed units when measuring instruments are used, measurements made and quantities indicated, keeps the shipping, aviation and rail exception, authorises supplementary indications with the SI figure predominant and the non-SI characters no larger, asks that the SI unit be stated clearly with writing rules in its Annex 2, allows non-prescribed units for goods and equipment placed on the market or taken into use before 1 July 1977, and fines breaches.", "source": "https://www.retsinformation.dk/eli/lta/2021/866 · § 1 to § 6 and bilag 1 to 3" }, { "date": "2020-06-13", "kind": "applies", "title": "Member States apply the constant-based SI definitions", "summary": "The provisions transposing Commission Directive (EU) 2019/1258 apply from 13 June 2020 in every Member State, deliberately on one date so that the definitions are implemented uniformly; this is the date of the consolidated version of the directive in force today.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · recital 7 and Art. 2(1)" }, { "date": "2019-08-13", "kind": "amendment", "title": "Commission Directive (EU) 2019/1258 redefines the SI base units", "summary": "Section 1.1 of Chapter I of the Annex is replaced with the definitions adopted at the 26th meeting of the General Conference on Weights and Measures in 2018, which fix the seven base units by the numerical values of seven defining constants and keep the degree Celsius as the special name for the derived unit of temperature.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · recitals 3 to 5, Art. 1, Art. 3 and Annex" }, { "date": "2010-01-01", "kind": "applies", "title": "Member States apply the measures transposing Directive 2009/3/EC", "summary": "The transposition deadline was 31 December 2009 and the national measures apply from 1 January 2010, so from that date supplementary indications are authorised without an end date, the Chapter II units keep their status without a closing date, and the rewritten Article 2(a) governs the scope.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · Art. 2(1)" }, { "date": "2009-05-27", "kind": "amendment", "title": "Directive 2009/3/EC removes the end dates and clarifies the scope", "summary": "Article 1(b) is replaced so the Chapter II units stay legal without a closing date in the Member States that authorised them on 21 April 1973, Article 2(a) is replaced so the obligations relate to measuring instruments used, measurements made and indications of quantity expressed in units of measurement, Article 3(2) is replaced so supplementary indications are simply authorised, Article 6b adds a Commission reporting duty by 31 December 2019, the acre is deleted from Chapter II, and the SI derived unit tables of Chapter I are rewritten.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003 · recitals 1 to 3, 8 and 10 and Art. 1" }, { "date": "2000-02-09", "kind": "amendment", "title": "Directive 1999/103/EC extends supplementary indications, inserts Article 6a and updates the Annex", "summary": "Replaces '31 December 1999' by '31 December 2009' in Article 3(2), extending the authorisation of supplementary indications by a further ten years so that Union exporters could keep marking products for third countries that do not accept metric-only marking. It inserts Article 6a, under which issues concerning implementation and in particular supplementary indications are to be examined further and measures adopted where necessary under the committee procedure of Article 18 of Council Directive 71/316/EEC. Directive 71/316/EEC was repealed by Directive 2009/34/EC, whose Article 20 provides that references to the repealed directive are construed as references to it and read in accordance with the correlation table in its Annex IV; that table makes Article 18(1) of Directive 71/316/EEC into Article 17(1) of Directive 2009/34/EC. The committee is therefore the Committee for Adjustment to Technical Progress of the Directives referred to in Article 16 of Directive 2009/34/EC, and it is the route by which Commission Directive (EU) 2019/1258 was adopted. One limit is worth knowing: the second paragraph of Article 16 of Directive 2009/34/EC excludes from that procedure the chapter of the Annex to the units directive that deals with imperial units of measurement, so the Commission cannot change Chapters II to IV this way — only the Council and Parliament can. And it amends the Annex in four places: the text under the table in Chapter I point 1.1.1 (the Celsius temperature definition), the definitions of the SI supplementary units radian and steradian following the table in point 1.2.1 (ISO 31-1:1992), the prefix table in point 1.3, which runs from yotta to yocto, and point 3 on the electronvolt and the unified atomic mass unit. Adopted on 24 January 2000 despite its 1999 number, in force on the day of publication, and to be transposed before 9 February 2001.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31999L0103 · recitals 4 and 5, Art. 1 points 1 to 3, Art. 2 and Art. 4; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0034 · Art. 16, Art. 17(1), Art. 20 and Annex IV; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258 · citations and recitals 2 and 8; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 3(2), Art. 6a and Annex, Chapter I, points 1.1.1, 1.2.1, 1.3 and 3, with the M3 change markers" }, { "date": "1989-11-30", "kind": "amendment", "title": "Council Directive 89/617/EEC sets the closing dates for the imperial chapters", "summary": "Replaces points (b) and (c) of Article 1 with three points (b), (c) and (d), so that the Chapter II units stay legal until a date the Member States concerned fix, the Chapter III units until a date no later than 31 December 1994 and the Chapter IV units — a chapter this directive creates — until a date no later than 31 December 1999, in each case only in the Member States where they were authorised on 21 April 1973. In Article 3 it replaces '31 December 1989' by '31 December 1999' in paragraph 2, extending the authorisation of supplementary indications by ten years, and deletes paragraph 5. It updates the ISO 2955 reference in Article 5 from 1 March 1974 to 15 May 1983, and deletes the second subparagraph of Article 6. In the Annex it replaces Chapter II, deletes the fathom from Chapter III and adds Chapter IV. Member States had 24 months from notification, which took place on 30 November 1989.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31989L0617 · Art. 1 points 1 to 5, Art. 2 and Art. 3 with the footnote on notification; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table, Art. 1(b) to (d), Art. 3, Art. 5, Art. 6 and Annex Chapters II to IV, with the M2 change markers" }, { "date": "1984-12-20", "kind": "amendment", "title": "Council Directive 85/1/EEC redefines the metre and adds the millimetre of mercury and the barn", "summary": "Does three things. It replaces the definition of the unit of length in Chapter I point 1.1 with the 1983 definition — 'A metre is the length of the path travelled in a vacuum by light during 1/299 792 458 seconds' (Seventeenth CGPM (1983), Resolution 1). It adds two units to the specialised-field table of Chapter I point 4, the millimetre of mercury for blood pressure and the pressure of other body fluids (1 mm Hg = 133,322 Pa) and the barn for effective cross-sectional area (1 b = 10⁻²⁸ m²), and replaces the note so that the prefixes of point 1.3 may be used with the units of that table except the millimetre of mercury, the multiple of 10² ares being called a hectare. And it deletes the blood-pressure unit from Chapter II and replaces that chapter's note. Member States had to bring the measures into force on 1 July 1985.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31985L0001 · Art. 1 points 1 to 3 and Art. 2; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · amendment table and Annex, Chapter I, point 4, with the M1 change markers" }, { "date": "1981-10-01", "kind": "applies", "title": "National measures apply and Directive 71/354/EEC is repealed", "summary": "Member States had to adopt and publish the transposing laws before 1 July 1981 and apply them from 1 October 1981, the same date on which Directive 71/354/EEC on units of measurement was repealed.", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 6 and Art. 7(a)" }, { "date": "1979-12-21", "kind": "in-force", "title": "Council Directive 80/181/EEC enters into force", "summary": "Adopted on 20 December 1979 and published in OJ L 39 of 15 February 1980, the directive took effect on 21 December 1979 according to the dates EUR-Lex records, with a transposition deadline of 30 June 1981 and application from 1 October 1981.", "source": "https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:31980L0181 · dates, entry into force and date of effect; https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613 · Art. 7(a)" } ], "sources": [ { "label": "Consolidated text of Council Directive 80/181/EEC on units of measurement, version of 13 June 2020 (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:01980L0181-20200613" }, { "label": "Council Directive 80/181/EEC as published in OJ L 39, 15 February 1980 (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31980L0181" }, { "label": "Document information, dates, corrigenda and amending acts for CELEX 31980L0181 (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:31980L0181" }, { "label": "Directive 2009/3/EC amending Directive 80/181/EEC, which made supplementary indications and the Chapter II units open-ended (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0003" }, { "label": "Commission Directive (EU) 2019/1258 adapting the Annex to the 2018 definitions of the SI base units (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L1258" }, { "label": "Directive 2009/34/EC on common provisions for measuring instruments and methods of metrological control, which replaced Directive 71/316/EEC and supplies the committee referred to in Article 6a (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0034" }, { "label": "Regulation (EU) 2019/1020 on market surveillance and compliance of products, whose Annex I lists the directive as point 6 (EUR-Lex)", "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1020" }, { "label": "Units of measurement in the EU (European Commission, DG GROW)", "url": "https://single-market-economy.ec.europa.eu/single-market/goods/building-blocks/legal-metrology/units-measurement-eu_en" }, { "label": "Legal metrology (European Commission, DG GROW)", "url": "https://single-market-economy.ec.europa.eu/single-market/goods/building-blocks/legal-metrology_en" }, { "label": "Bekendtgørelse nr. 866 af 11. maj 2021 om det internationale enhedssystem, SI, og andre lovlige enheder (Retsinformation)", "url": "https://www.retsinformation.dk/eli/lta/2021/866" }, { "label": "Bekendtgørelse nr. 618 af 13. maj 2020 om det internationale enhedssystem, SI, og andre lovlige enheder, repealed on 14 May 2021 (Retsinformation)", "url": "https://www.retsinformation.dk/eli/lta/2020/618" }, { "label": "Bekendtgørelse af lov om produkter og markedsovervågning, LBK nr. 22 af 8. januar 2026 (Retsinformation)", "url": "https://www.retsinformation.dk/eli/lta/2026/22" }, { "label": "Regler og bekendtgørelser for måling og vægt (Sikkerhedsstyrelsen)", "url": "https://www.sik.dk/erhverv/produkter/maaling-og-vaegt-metrologi/love-og-regler-0/regler-og-bekendtgoerelser-maaling-og-vaegt" }, { "label": "Sikkerhedsstyrelsen, en del af Erhvervsstyrelsen from January 2026 (Erhvervsstyrelsen)", "url": "https://erhvervsstyrelsen.dk/sikkerhedsstyrelsen-en-del-af-erhvervsstyrelsen" } ], "reviewer": { "name": "Conphora compliance team", "role": "Compliance editors, Conphora" }, "reviewedAt": "2026-09-24", "nextReview": "2027-03-13", "links": { "tools": [], "courses": [], "related": { "en": "/regulations/uomd/", "dk": "/dk/eu-regulativer/uomd/" } } }