/convert/mj-to-kwh/ Convert megajoules to kWh instantly with a reference conversion table. article megajoules to kWh Converter — 247QuickTools
⚡ Energy

megajoules to kWh Converter

Convert megajoules to kWh instantly with a reference conversion table.

Quick answer: To convert megajoules to kWh, multiply by 0.277778. For example, 1 megajoules = 0.277778 kWh. Use the calculator below for any value.
megajoules to kWh
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Common conversions
megajoules kWh
Formula:

How to convert megajoules to kWh

1

Enter your value

Type the number of megajoules you want to convert into the left box. The result in kwh 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 — kWh to megajoules. Your current value carries across so you don't have to re-enter anything.

3

About megajoules and kWh

megajoules and kWh are common energy measurements.

💡 Did you know?

1 kWh = 3.6 MJ exactly. A standard UK electricity unit is 1 kWh. At 28p/kWh (UK 2026 average), 1 MJ of electricity costs about 7.8p. The energy content of 1 litre of petrol is approximately 34.2 MJ = 9.5 kWh.

📊 Common conversions at a glance
megajoules kWh
0.1 0.02778
0.5 0.1389
1 0.2778
3.6 1
5 1.389
10 2.778
Reviewed for 2026. megajoules ↔ kWh 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.

Frequently asked questions

How do I convert megajoules to kWh?

To convert megajoules to kWh, multiply by 0.277778. Or use the calculator above for instant results.

How many kWh are in 1 megajoules?

1 megajoules equals 0.277778 kWh.

Is the megajoules to kWh converter free?

Yes, the megajoules to kWh converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.