Free Energy Converter
Convert joules, calories, kWh and BTU.
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About the Energy Converter
Free energy converter. Convert between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours and BTU instantly.
How it works
- 1
Enter a value
Type the energy to convert.
- 2
Pick units
Choose from and to units.
- 3
Read the result
See it in all units.
Frequently asked questions
One (thermochemical) calorie is about 4.184 joules.
Yes — watt-hours and kilowatt-hours are included.