Milligrams per liter to grams per cup converter on this page calculates how many grams per cup are in 'X' milligrams per liter (where 'X' is the number of milligrams per liter to convert to grams per cup). In order to convert a value from milligrams per liter to grams per cup (from mg/L to g/cup) just type the number of mg/L to be converted to g/cup and then click on the 'convert' button.