Gigawatt hours to kilowatt hours converter on this page calculates how many kilowatt hours are in 'X' gigawatt hours (where 'X' is the number of gigawatt hours to convert to kilowatt hours). In order to convert a value from gigawatt hours to kilowatt hours (from GWh to kWh) type the number of GWh to be converted to kWh and then click on the 'convert' button.