Cubic feet de natural gas per second to kilocalories per hour conversion calculator shown above calculates how many kilocalories per hour are in 'X' cubic feet de natural gas per second (where 'X' is the number of cubic feet de natural gas per second to convert to kilocalories per hour). In order to convert a value from cubic feet de natural gas per second to kilocalories per hour simply type the number of cubic feet de natural gas per second to be converted to kcal/h and then click on the 'convert' button.