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