Pounds per cup (US) to pounds per gallon (UK) conversion calculator above calculates how many pounds per gallon (UK) are in 'X' pounds per cup (US) (where 'X' is the number of pounds per cup (US) to convert to pounds per gallon (UK)). In order to convert a value from pounds per cup (US) to pounds per gallon (UK) (from lb/cup to lb/gal) just type the number of lb/cup to be converted to lb/gal and then click on the 'convert' button.