The out-of-the-box Units class in the reference implementation includes support for units (and quantities) defined in the following documents:
- BIPM units (same as ISO 1000), including:
- Base units
- Coherent derived units in the SI with special names and symbols
- Derived units expressed in terms of base units (a reasonable subset based on broad usage)
- Decimal multiples and submultiples of SI units
- Special constant ONE, a Dimensionless unit