Wikidata:Property proposal/Ontology of units of Measure 2.0 unit ID

Ontology of units of Measure 2.0 unit IDEdit

Originally proposed at Wikidata:Property proposal/Authority control

Data typeExternal identifier
Domaininstances of unit of measurement (Q47574) (and its subclasses)
Example 1metre (Q11573)metre
Example 2kilometre (Q828224)kilometre
Example 3volt per metre (Q3562962)voltPerMetre
Example 4international inch (Q61771670)inch-International
Number of IDs in source1691
Expected completenessalways incomplete (Q21873886)
Formatter URL$1
See measure ID (P3328) (the previous version 1.8), QUDT unit ID (P2968), UCUM code (P7825), Wolfram Language unit code (P7007), UN/CEFACT Common Code (P6512)


Version 2.0 is being developed actively with the last commit just days ago. From the five large unit ontologies (that I'm aware of; "see also" above) this is the last one which Wikidata is still missing. There is one aspect to be aware of: The ontology declares units, quantities, scales and other objects (just like other ontologies do). This proposal is specifically about units. If we ever want to link quantities to this ontology, we should propose an additional property (just like we did with QUDT quantity kind ID (P8393) and Wolfram Language quantity ID (P7431)). Toni 001 (talk) 09:45, 21 October 2020 (UTC)


@Toni 001, ArthurPSmith, Tinker Bell, YULdigitalpreservation:   Done Ontology of units of Measure 2.0 unit ID (P8769) Pamputt (talk) 07:16, 6 November 2020 (UTC)