How to convert megajoules per kilogram to kilowatt-hours per kilogram
kWh/kg = MJ/kg × 0.2777777778Because one kilowatt-hour per kilogram equals 3.6 megajoules per kilogram, you can also divide: kWh/kg = MJ/kg ÷ 3.6.
A megajoule per kilogram is smaller than a kilowatt-hour per kilogram: it takes 3.6 megajoules per kilogram to make one kilowatt-hour per kilogram.
Worked examples
- 1 megajoule per kilogram1 MJ/kg × 0.2777777778 = 0.2777777778 kWh/kg
- 5 megajoules per kilogram5 MJ/kg × 0.2777777778 = 1.388888889 kWh/kg
- 10 megajoules per kilogram10 MJ/kg × 0.2777777778 = 2.777777778 kWh/kg
- 20 megajoules per kilogram20 MJ/kg × 0.2777777778 = 5.555555556 kWh/kg
- 100 megajoules per kilogram100 MJ/kg × 0.2777777778 = 27.77777778 kWh/kg
Megajoules per kilogram to kilowatt-hours per kilogram conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Megajoules per kilogram (MJ/kg) | Kilowatt-hours per kilogram (kWh/kg) |
|---|---|
| 0.1 MJ/kg | 0.027777778 kWh/kg |
| 0.25 MJ/kg | 0.069444444 kWh/kg |
| 0.5 MJ/kg | 0.13888889 kWh/kg |
| 1 MJ/kg | 0.27777778 kWh/kg |
| 2 MJ/kg | 0.55555556 kWh/kg |
| 3 MJ/kg | 0.83333333 kWh/kg |
| 4 MJ/kg | 1.1111111 kWh/kg |
| 5 MJ/kg | 1.3888889 kWh/kg |
| 6 MJ/kg | 1.6666667 kWh/kg |
| 7 MJ/kg | 1.9444444 kWh/kg |
| 8 MJ/kg | 2.2222222 kWh/kg |
| 9 MJ/kg | 2.5 kWh/kg |
| 10 MJ/kg | 2.7777778 kWh/kg |
| Megajoules per kilogram (MJ/kg) | Kilowatt-hours per kilogram (kWh/kg) |
|---|---|
| 12 MJ/kg | 3.3333333 kWh/kg |
| 15 MJ/kg | 4.1666667 kWh/kg |
| 20 MJ/kg | 5.5555556 kWh/kg |
| 25 MJ/kg | 6.9444444 kWh/kg |
| 30 MJ/kg | 8.3333333 kWh/kg |
| 40 MJ/kg | 11.111111 kWh/kg |
| 50 MJ/kg | 13.888889 kWh/kg |
| 75 MJ/kg | 20.833333 kWh/kg |
| 100 MJ/kg | 27.777778 kWh/kg |
| 250 MJ/kg | 69.444444 kWh/kg |
| 500 MJ/kg | 138.88889 kWh/kg |
| 1,000 MJ/kg | 277.77778 kWh/kg |
About the units
Megajoule per kilogram (MJ/kg)
The megajoule per kilogram (MJ/kg) is a unit of fuel efficiency by mass in the International System of Units (SI). One megajoule per kilogram equals 1,000,000 joules per kilogram (J/kg).
Kilowatt-hour per kilogram (kWh/kg)
The kilowatt-hour per kilogram (kWh/kg) is a unit of fuel efficiency by mass in the metric system. One kilowatt-hour per kilogram equals 3,600,000 joules per kilogram (J/kg).
Frequently asked questions
How many kilowatt-hours per kilogram are in one megajoule per kilogram?
There are 0.2777777778 kilowatt-hours per kilogram in one megajoule per kilogram, and this value is exact by definition.
How do I convert megajoules per kilogram to kilowatt-hours per kilogram?
Multiply the number of megajoules per kilogram by 0.2777777778. For example, 10 MJ/kg × 0.2777777778 = 2.777777778 kWh/kg.
How many megajoules per kilogram are in one kilowatt-hour per kilogram?
One kilowatt-hour per kilogram equals 3.6 megajoules per kilogram. That is the reverse factor, 1 ÷ 0.2777777778.
What is 10 megajoules per kilogram in kilowatt-hours per kilogram?
10 MJ/kg = 2.777777778 kWh/kg.
Is this MJ/kg to kWh/kg converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.