How can I convert kg to kWh?

Answer:
kg. is a unit of mass; kWh is a unit of energy. If you want to use the formula E=mc2 (assuming you can actually convert the mass into energy, which is not always possible), that gives you approximately 9 x 1016 Joules; since a kWh is equal to 3.6 million Joules (a Joule is a Watt-second), the division gives 2,500,000,000,000 kWh.
First answer by Hilmarz. Last edit by Hilmarz. Contributor trust: 802 [recommend contributor recommended]. Question popularity: 2 [recommend question].