kWh × 3.6 = MJ
One kilowatt-hour equals 3.6 megajoules.Conversion lab / energy
Kilowatt-Hours to Megajoules Converter
Convert electrical energy from kilowatt-hours to megajoules.
Kilowatt-Hours to Megajoules Converter: 1 kilowatt-hour = 3.6 megajoules. To convert any amount, multiply the number of kilowatt-hours by 3.6. TOEA calculates with the full stored factor (kWh × 3.6 = MJ) and keeps the calculation in your browser. Runs 100% locally in your browser with zero server file uploads.
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Result / live
3.6
MJmegajoules
1 kWh3.6 MJ
5 kWh18 MJ
10 kWh36 MJ
24 kWh86.4 MJ
100 kWh360 MJ
Kilowatt-hours to megajoules conversion table
| kilowatt-hours (kWh) | megajoules (MJ) |
|---|---|
| 1 kWh | 3.6 MJ |
| 2 kWh | 7.2 MJ |
| 3 kWh | 10.8 MJ |
| 4 kWh | 14.4 MJ |
| 5 kWh | 18 MJ |
| 6 kWh | 21.6 MJ |
| 7 kWh | 25.2 MJ |
| 8 kWh | 28.8 MJ |
| 9 kWh | 32.4 MJ |
| 10 kWh | 36 MJ |
| 15 kWh | 54 MJ |
| kilowatt-hours (kWh) | megajoules (MJ) |
|---|---|
| 20 kWh | 72 MJ |
| 24 kWh | 86.4 MJ |
| 25 kWh | 90 MJ |
| 30 kWh | 108 MJ |
| 40 kWh | 144 MJ |
| 50 kWh | 180 MJ |
| 75 kWh | 270 MJ |
| 100 kWh | 360 MJ |
| 250 kWh | 900 MJ |
| 500 kWh | 1,800 MJ |
| 1,000 kWh | 3,600 MJ |
Rounded to seven significant digits; the converter above uses the full factor.
Worked examples
Multiply the number of kilowatt-hours by 3.6:
5 kWh × 3.6 = 18 MJ10 kWh × 3.6 = 36 MJ24 kWh × 3.6 = 86.4 MJ
How to use it
- Enter the number of kilowatt-hours you want to convert.
- Read the megajoules result as it updates.
- Copy the result or open the reverse conversion.
Privacy & limitations
Your value never leaves this browser. JavaScript floating-point arithmetic can round the last displayed digit for very large or highly precise values; do not use this general utility where regulated measurement traceability is required.
Related tools
Frequently asked questions
What formula converts kilowatt-hours to megajoules?
kWh × 3.6 = MJ. The result is displayed with up to 6 decimal places without changing the underlying calculation.
How many megajoules is 100 kWh?
100 kWh = 360 MJ. Multiply 100 by 3.6 to get it, or find it in the conversion table.
How do I convert megajoules back to kilowatt-hours?
Divide by 3.6, or open the reverse converter, which uses the exact reciprocal of the same factor.
Can I enter zero, decimals, or negative values?
Yes. The engine handles finite positive, zero, decimal, and negative numbers. Whether a negative measurement is meaningful depends on your use case.
Is this conversion performed online?
The page is online, but the number you type is converted locally in your browser and is not sent to TOEA.
Embed this tool
Free to use on any website. Paste the code where the tool should appear; the link under it lets readers open the full page.
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<p style="margin:4px 0 16px;font-size:13px"><a href="https://toea.com/kwh-to-mj">Kilowatt-Hours to Megajoules Converter</a> · TOEA</p>
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