Energy Converter — Joules, kWh, Calories, BTU & more
The Energy Converter converts between all common energy units used in physics, nutrition, engineering, and power systems. From the joules used in physics to the kilocalories on food labels, to kilowatt-hours on electricity bills, this free tool covers every conversion.
Frequently Asked Questions
1 kWh = 3,600,000 joules (3.6 MJ). A kWh is the energy used by a 1,000-watt appliance running for 1 hour.