Divide the number of watt hours by 1,000 to convert to kWh. For example, if you have 1,400 Wh, divide 1,400 by 1,000 to get 1.4 kWh.
Divide the number of megajoules of energy by 3.6 to convert to kWh. For example, if you have 15 MJ, divide 15 by 3.6 to get 4.17 kWh.
Divide the number of Btu by 3,412.141 to convert to kWh. For example, if you have 5,300 Btu, divide 5,300 by 3,412.141 to get 1.47 kWh.
Divide the number of Calories by 859.846 to convert to kWh. For example, if you have 1,500 Calories, divide 1,500 by 859.846 to get 1.74 kWh.
Divide the number of foot pounds by 2.655 million to convert to kWh. For example, if you have 10 million foot pounds, divide 10 million by 2.655 million to get 3.77 kWh.