MJ to kWh Converter
1 MJ = 0.27778 kWh. Enter a value. The result updates immediately.
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Accuracy and rounding
Use energy units for accumulated work or heat. Do not confuse kWh with kW, which is power rather than energy.
Energy units share a fixed joule reference. Food Calories are kilocalories; this calculator uses the thermochemical calorie at exactly 4.184 joules and the International Table BTU.
For billing, nutrition, or engineering, match the precision of the original kWh data and keep the energy/power distinction explicit.
How to convert MJ to kWh
- Enter the value in MJ.
- Select MJ as the source unit.
- Select kWh as the target unit.
- Read or copy the result.
MJ to kWh chart
| MJ | kWh |
|---|---|
| 1 MJ | 0.27778 kWh |
| 2 MJ | 0.55556 kWh |
| 5 MJ | 1.3889 kWh |
| 10 MJ | 2.7778 kWh |
| 25 MJ | 6.9444 kWh |
| 50 MJ | 13.8889 kWh |
| 100 MJ | 27.7778 kWh |
Formula
kWh = MJ x 0.277777777778
Example: 1 MJ = 0.27778 kWh.
Source
Energy factors from NIST SI conversion tables, using the joule as the shared reference unit.
Common questions
How do I convert MJ to kWh?
Enter the MJ value in the converter, or multiply by the factor shown in the formula. 1 MJ = 0.27778 kWh.
What should I watch out for?
Do not confuse energy with power: kWh is accumulated energy, while kW is a rate of energy transfer.
Where does this energy conversion come from?
Energy factors from NIST SI conversion tables, using the joule as the shared reference unit. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.