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