⚡ Energy
kWh to megajoules Converter
Convert kWh to megajoules instantly. Includes a reference table and formula.
Quick answer: To convert kWh to megajoules, multiply by 3.6. For example, 1 kWh = 3.6 megajoules. Use the calculator below for any value.
kWh to megajoules
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Common conversions
| kWh | megajoules |
|---|
Formula:
How to convert kWh to megajoules
1
Enter your value
Type the number of kwh you want to convert into the left box. The result in megajoules appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — megajoules to kWh. Your current value carries across so you don't have to re-enter anything.
3
About kWh and megajoules
kWh and megajoules are both energy. Use this converter to switch between them instantly.
💡 Did you know?
1 kWh = 3.6 MJ. UK typical gas boiler use in winter: 15-20 kWh/day = 54-72 MJ/day. A standard 18650 lithium-ion battery cell (used in Tesla cars): ~11.4 Wh = 0.041 MJ. A Tesla Model 3 battery pack: ~82 kWh = 295 MJ.
📊 Common conversions at a glance
| kWh | megajoules |
|---|---|
| 0.1 | 0.36 |
| 0.5 | 1.8 |
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
Reviewed for 2026. kWh ↔ megajoules conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.