Cubic feet of natural gas to megacalories converter on this page calculates how many megacalories are in 'X' cubic feet of natural gas (where 'X' is the number of cubic feet of natural gas to convert to megacalories). In order to convert a value from cubic feet of natural gas to megacalories just type the number of cubic feet of natural gas to be converted to Mcal and then click on the 'convert' button.