There are four non SI sets of definitions for volume (In the West)
US Customary - Food labeling
In implementing the uomConversionVolume() I have only implemented conversions between Imperial, US Customary - Liquid and Metric.
In the table below is a list of the conversion pairs which are handled by the uomConversionVolume() formula. If you are a Pack subscriber, please feel free to request any pairs that you need.
Source Measurement Type:
Destination Measurement Type:
Volume Units Implementation list