Measurement calculator that can be used to convert Gigajoule to Watt hour, among others: 1 Gigajoule [GJ] = 277 777.777 777 78 Watt hour [Wh]
Convert Gigajoule to Watt hour:Choose the right category from the selection list, in this case 'Energy'. Next enter the value you want to convert. From the selection list, choose the unit that corresponds to the value you want to convert, in this case 'Gigajoule [GJ]'. Finally choose the unit you want the value to be converted to, in this case 'Watt hour [Wh]'.