Energy Converter

Convert between chemical, electrical and physical energy units.

Energy
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Related Conversions
1 kWh to MJ 10 kWh to MJ 20.2 kWh to MJ 27.8 kWh to MJ 30.4 kWh to MJ 50 kWh to MJ 50.6 kWh to MJ 60.7 kWh to MJ 101 kWh to MJ 1,000 kWh to MJ 5,000 kWh to MJ 10,000 kWh to MJ
Reverse Conversions
5 MJ to kWh 20.2 MJ to kWh 22.8 MJ to kWh 40.5 MJ to kWh 50 MJ to kWh 50.6 MJ to kWh 101 MJ to kWh 500 MJ to kWh 506 MJ to kWh 1,000 MJ to kWh 2,500 MJ to kWh 50,000 MJ to kWh
More Energy Conversions
1 MJ to BTU 100 J to cal 1 GJ to kWh 1 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 10 BTU to J 250 cal to J

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Popular Conversions

Kilowatt-Hours to Megajoules Megajoules to Kilowatt-Hours Joules to Calories Kilocalories to Kilojoules British Thermal Units to Joules Watt-Hours to Joules

Common Benchmarks

Phone battery 40 kJ
Slice of bread 330 kJ
Laptop full charge 200 kJ
AA battery 10 kJ
Microwave 10 minutes 0.17 kWh
100 W bulb for 1 hour 0.1 kWh

Formula

MJ = kWh × 3.6

Example

Example: convert 25.3 kilowatt-hours to megajoules.

25.3 kWh = 91.08 MJ

Conversion table

kilowatt-hours (kWh) megajoules (MJ)
1 kWh 3.6 MJ
2 kWh 7.2 MJ
5 kWh 18 MJ
10 kWh 36 MJ
20 kWh 72 MJ
50 kWh 180 MJ
100 kWh 360 MJ

Explanation

These are both units.

How to convert kilowatt-hours to megajoules

  1. Start with the value in kilowatt-hours (kWh).
  2. Multiply it by 3.6.
  3. The result is the measurement in megajoules (MJ).

Example: 25.3 kWh → 91.08 MJ

Frequently Asked Questions

How much is 25.3 kilowatt-hours in megajoules?

25.3 kilowatt-hours equals 91.08 megajoules.

How many megajoules is 1 kilowatt-hour?

1 kilowatt-hour equals 3.6 megajoules.

How many kilowatt-hours is 1 megajoule?

1 megajoule equals 0.277777777778 kilowatt-hours.

What is the difference between kilowatt-hours and megajoules?

Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.

Where are kilowatt-hours and megajoules used?

They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.

Why does 1 kilowatt-hour equal 3.6 megajoules?

Because the units are defined with a fixed relationship. To convert kilowatt-hours to megajoules, multiply by that factor.