UCUM is a standard for encoding units of measure, and PixelMed™ provides an experimental open source toolkit for the parsing of UCUM unit strings, their conversion into a canonical form and for the extraction of a value to convert one unit to another, where possible. The Java jar files, source code and documentation are available at PixelMed™ Java UCUM Toolkit. More information about UCUM, and tools created by the author of the UCUM standard, Gunther Schadow, can be found at the Unified Code for Units of Measure.