Milligrams per cubic decimeter to grams per liter conversion calculator above calculates how many grams per liter are in 'X' milligrams per cubic decimeter (where 'X' is the number of milligrams per cubic decimeter to convert to grams per liter). In order to convert a value from milligrams per cubic decimeter to grams per liter (from mg/dm³ to g/L) simply type the number of mg/dm³ to be converted to g/L and then click on the 'convert' button.