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Power and Energy

MJtokWh

Convert megajoules (MJ) to kilowatt-hours (kWh).

Factor1 MJ = 0.2777778 kWh

Converter

MJ

Accepts numbers or expressions, e.g. 150 + 14.7

Result
10kWh

Rendered to 6 significant figures.

Formula

Formula
kWh = MJ × 0.2777778

Multiply any value in megajoules by 0.2777778 to obtain the value in kilowatt-hours.

Worked example

Convert 36 MJ to kWh.

  1. 01Start with 36 MJ.
  2. 02Multiply by the conversion factor: 36 × 0.2777778 = 10 kWh.
Result36 MJ = 10 kWh

Conversion table

MJkWh
10.27778
20.55556
51.3889
102.7778
205.5556
5013.889
10027.778
20055.556
500138.89
1000277.78

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from MJ to kWh?
1 MJ equals 0.2777778 kWh. To convert, multiply the value in megajoules by 0.2777778.
How do I convert 1 MJ to kWh?
1 MJ = 0.277778 kWh. For any value, multiply by 0.2777778.
How do I convert kWh back to MJ?
Divide by the same factor — or equivalently, multiply by 3.6. So 1 kWh = 3.6 MJ.
When would I need to convert megajoule to kilowatt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
Yes. Both MJ and kWh are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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