Measurement calculator that can be used to convert British thermal unit to Watt hour, among others: 1 British thermal unit [Btu] = 0.293 071 070 172 22 Watt hour [Wh]
Convert British thermal unit 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 'British thermal unit [Btu]'. Finally choose the unit you want the value to be converted to, in this case 'Watt hour [Wh]'.