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Module dimensioned::conversion

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Conversion between unit systems

Wherever it makes sense, we implement conversion between the unit systems that ship with dimensioned using core::convert::From.

Note that it does not always make sense to do so. For example, while one can convert from a subset of the SI system to CGS, it makes no sense to convert from CGS to SI.

If are interested in implementing conversion for your own unit system, here is an example demonstrating how to do so.

Conversions between unit systems are implemented as follows:

  • SI to UCUM: As UCUM does not have a unit for amount of substance, this is defined only for SI units that don’t contain Moles. In addition, as UCUM defines radians as a unit, it is not correct to perform this conversion if the quantity expresses an angle.

  • SI to CGS and MKS: These conversions are only defined for SI units that are a combination of Meter, Kilogram, Second, and Ampere.

  • UCUM to SI: As SI does not have a unit for angle, this is only defined for UCUM units that don’t contain Radians.

  • CGS to MKS

  • MKS to CGS