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