Gigacalories to cubic feet of natural gas converter above calculates how many cubic feet of natural gas are in 'X' gigacalories (where 'X' is the number of gigacalories to convert to cubic feet of natural gas). In order to convert a value from gigacalories to cubic feet of natural gas simply type the number of Gcal to be converted to cubic feet of natural gas and then click on the 'convert' button.