Energy Unit Converter
Convert between different energy units in one step.
How to use the energy converter
- Enter the value.
- Pick the unit you convert from and the unit you convert to.
- Read the result instantly, or use the swap button.
Frequently asked questions
Which units does the energy converter support?
joules (J), kilojoules (kJ), calories (cal), kilocalories (kcal), watt-hours (Wh), kilowatt-hours (kWh), btu (BTU).
How does the conversion work?
The value is converted to a base unit first and then to the target unit, so results are accurate between any two units.
How accurate are the results?
We use the official conversion factors. Results are rounded to 7 significant digits.
More calculators
Kilocalories to KilojoulesConvert kilocalories to kilojoules instantly. 1 kilocalorie = 4.184 kilojoules.
Kilojoules to KilocaloriesConvert kilojoules to kilocalories instantly. 1 kilojoule = 0.2390057 kilocalories.
Kilowatt-hours to KilocaloriesConvert kilowatt-hours to kilocalories instantly. 1 kilowatt-hour = 860.4207 kilocalories.