Quantities, Units, Dimensions and Types
Ontology for physical quantities, units of measure, dimensions, and data types. Essential for scientific data.
Visit WebsiteBrowse the class tree, filter it, and select any class to see its subtree.
When and where you'd use this ontology in practice.
Scientific data unit standardization
Engineering measurement interoperability
IoT sensor unit conversion
Cross-system quantity comparison
CC-BY-4.0QUDT vocabulary, licensed under CC BY 4.0. Source: https://qudt.org/
Verified against the licence text on 2026-08-07.
Other ontologies in Web Standards.