Cubic feet of natural gas to gigawatt hours conversion calculator shown above calculates how many gigawatt hours are in 'X' cubic feet of natural gas (where 'X' is the number of cubic feet of natural gas to convert to gigawatt hours). In order to convert a value from cubic feet of natural gas to gigawatt hours type the number of cubic feet of natural gas to be converted to GWh and then click on the 'convert' button.