UMARIX Unit ConverterEnergy Converter
Convert energy between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, and BTUs.
Value in every unit
| Unit | Value |
|---|
How to use
- Enter the value you want to convert.
- Choose the unit you are converting from, then the unit you want.
- Read the live result instantly, use Swap to reverse the direction, or use Copy result to paste it elsewhere.
About this conversion
For example, 1 kilowatt-hour is 3.6 million joules, and 1 food calorie (kilocalorie) is 4184 joules. Electricity bills use kilowatt-hours, food labels use kilocalories, and heating systems in the US often use BTUs.
Frequently asked questions
How many joules are in a kilowatt-hour?
One kilowatt-hour is 3,600,000 joules.
Is a food calorie the same as a calorie in physics?
A food calorie is a kilocalorie, which is 1000 small calories and 4184 joules.
What is a BTU?
A BTU is the energy needed to raise one pound of water by one degree Fahrenheit, about 1055 joules.