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