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