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