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