What is UCUM?
Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business.
UCUM Specification
View and download the specification and its source XML. You can also clone the repository.
Requests for Units
Learn how to request new units for potential inclusion in the standard.
Implementation Directory
See APIs and web services which use UCUM.
Documentation
Learn about use of UCUM through numerous documents about the standard.
History
UCUM was created by Gunther Schadow and Clem McDonald in 1999. Learn more about its origins.
Don't miss anything
Stay up to date on new UCUM releases and other important happenings by joining our mailing list.