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