Energy Converter
Convert kcal, kJ, kWh, joules and BTU.
Free
Runs in your browser
All conversions
| Unit | Value |
|---|
Common conversions
| 1 kcal | 4.184 kJ |
| 1 kJ | 0.239006 kcal |
| 1 kWh | 3.6 MJ |
| 1 kWh | 3,412.1416 BTU |
| 1 BTU | 1,055.0559 J |
| 1 kcal | 0.00116222 kWh |
| 1 Wh | 3,600 J |
| 1 thm | 29.3001 kWh |
About this tool
Energy Converter changes energy between food, electricity, heating and physics units. Use it to read food labels in kcal or kJ, or to compare gas and electricity costs.
How to use Energy Converter
- Type an amount of energy.
- Choose the units.
- Read the result or the full table.
Questions people ask
How many kJ are in a kcal?
1 kcal = 4.184 kJ. Food “Calories” with a capital C are kilocalories.
How many BTU are in a kWh?
1 kWh ≈ 3,412.14 BTU.
How many joules are in a kWh?
Exactly 3,600,000 J (1,000 W × 3,600 s).
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