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Energy Converter
Convert between joules, kilojoules, megajoules, calories….
3.6 MJ
1 kWh
| Unit | Value |
|---|---|
| Joules (J) | 3,600,000 |
| Kilojoules (kJ) | 3,600 |
| Megajoules (MJ) | 3.6 |
| Calories (cal) | 860,420.6501 |
| Kilocalories (kcal) | 860.42065 |
| Watt-hours (Wh) | 1,000 |
| Kilowatt-hours (kWh) | 1 |
| BTU (BTU) | 3,412.1416 |
| Electronvolts (eV) | 2.246943 × 10^25 |
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter a value.
- 2Pick the units to convert between.
- 3Read the converted value instantly.
About this tool
Energy Converter: Convert between joules, kilojoules, megajoules, calories…. Enter a value and it is converted instantly using exact conversion factors. The table below lists common values for quick reference.
Example
| Input | |
|---|---|
| Value | 1 |
| From | Kilowatt-hours (kWh) |
| To | Megajoules (MJ) |
| Result | |
| 1 kWh | 3.6 MJ |
How do I use the Energy Converter?
Enter a value. Pick the units to convert between. Read the converted value instantly.
Is the Energy Converter free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.