Grams per milliliter to kilograms per cubic meter conversion calculator above calculates how many kilograms per cubic meter are in 'X' grams per milliliter (where 'X' is the number of grams per milliliter to convert to kilograms per cubic meter). In order to convert a value from grams per milliliter to kilograms per cubic meter (from g/mL to kg/m³) just type the number of g/mL to be converted to kg/m³ and then click on the 'convert' button.