How to show different mesurement units according to the user locale in flutter/dart

Question

I have to display a Value in both imperial and metric systems for example 1000 Liter could be displayed as 1000 Gallons or 1000 Gl for shorl if the user is in the USA. or

• 500 ml vs 500 Oz
• 100 Miles vs 100 Km I have the locale of the user. but as far I know dart's Intl library support only date and language translations (maybe money too). How do I do this for distance and volume etc... any pointers in the right direction would be appreciated.