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