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