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Kilowatt-hour per kilogram to Megajoule per kilogram Converter

1 kilowatt-hour per kilogram is exactly 3.6 megajoules per kilogram. Convert kilowatt-hours per kilogram (kWh/kg) to megajoules per kilogram (MJ/kg) below: type a value and the result updates as you type.

kWh/kg to MJ/kg calculator

Dot or comma decimals and scientific notation (1e-3) work.

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Kilowatt-hour per kilogram to Megajoule per kilogram conversion

1 kWh/kg = 3.6 MJ/kgone kilowatt-hour per kilogram in megajoules per kilogram

1 MJ/kg ≈ 0.2777777778 kWh/kgone megajoule per kilogram in kilowatt-hours per kilogram

Kilowatt-hour per kilogram (kWh/kg): Exactly 3.6 MJ/kg. Used for battery and hydrogen energy density.

Megajoule per kilogram (MJ/kg): Exactly one million J/kg. Fuel heating values are usually given in MJ/kg (gasoline is about 46 MJ/kg).

Source:SI Brochure, 9th edition (BIPM, 2019)

How to convert kilowatt-hours per kilogram to megajoules per kilogram

To convert kilowatt-hours per kilogram to megajoules per kilogram, multiply the number of kilowatt-hours per kilogram by 3.6.

Formula

MJ/kg = kWh/kg × 3.6

Examples

  • 5 kWh/kg = 5 × 3.6 = 18 MJ/kg
  • 25 kWh/kg = 25 × 3.6 = 90 MJ/kg
  • 100 kWh/kg = 100 × 3.6 = 360 MJ/kg

Kilowatt-hour per kilogram to Megajoule per kilogram conversion table

Kilowatt-hour per kilogram to Megajoule per kilogram
Kilowatt-hour per kilogram (kWh/kg)Megajoule per kilogram (MJ/kg)
0.1 kWh/kg0.36 MJ/kg
0.5 kWh/kg1.8 MJ/kg
1 kWh/kg3.6 MJ/kg
2 kWh/kg7.2 MJ/kg
3 kWh/kg10.8 MJ/kg
5 kWh/kg18 MJ/kg
10 kWh/kg36 MJ/kg
20 kWh/kg72 MJ/kg
25 kWh/kg90 MJ/kg
50 kWh/kg180 MJ/kg
100 kWh/kg360 MJ/kg
250 kWh/kg900 MJ/kg
500 kWh/kg1800 MJ/kg
1000 kWh/kg3600 MJ/kg

Values rounded to 10 significant digits where needed.

Frequently asked questions

How many megajoules per kilogram are in one kilowatt-hour per kilogram?
One kilowatt-hour per kilogram is exactly 3.6 megajoules per kilogram.
How do I convert megajoules per kilogram to kilowatt-hours per kilogram?
To convert megajoules per kilogram to kilowatt-hours per kilogram, divide the number of megajoules per kilogram by 3.6. The formula is kWh/kg = MJ/kg ÷ 3.6.
Is this conversion exact?
Yes. Both units have exact definitions and the factor 3.6 is exact. Displayed results are only rounded when they have many decimal places.
Which is larger, a kilowatt-hour per kilogram or a megajoule per kilogram?
A kilowatt-hour per kilogram is 3.6 times larger than a megajoule per kilogram. In other words, a megajoule per kilogram is about 0.2777777778 of a kilowatt-hour per kilogram.