Energy Converter

Energy Converter — joules, calories, kWh, BTU

Convert energy units: joules, kilojoules, calories, kilocalories, kilowatt-hours, BTUs and more. Free and accurate.

FAQ

How many calories in a kilocalorie?

1 kilocalorie (kcal) = 1,000 calories (cal).

How many joules in a kilowatt-hour?

1 kWh = 3,600,000 joules.

What is a BTU?

BTU = British Thermal Unit. 1 BTU = 1,055.06 joules.