Energy can be expressed in many units depending on context. kWh is used for electricity bills. Joules are the SI unit. BTU is used in HVAC. Calories in nutrition.
Common Conversions
Frequently Asked Questions
How many joules in 1 kWh?+
1 kWh = 3,600,000 joules (3.6 MJ). One kilowatt-hour is the energy used by a 1000W appliance running for one hour.
What is a BTU?+
A BTU (British Thermal Unit) is the energy needed to raise 1 lb of water by 1°F. 1 kWh = 3412 BTU.
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