Multiple unit of measurement conversion

I need customization in unit of UOM where I could be able to create multiple UOM for product and at the time of invoicing I just select UOM and system should calculate rest of unit e.g if I select dozen system should calculate my multiplying 12 and if I select pair system should calculate bu multiplying by 2.

Hi, @School_Deskpro
To add Multiple UOM in Product there is Section Called “Unit Of Measure” you can add any UOM and Conversion Factor.

I want packing which have different values so at time of selling selection and I want cost calculation for loose items in packing