Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
10 MJ to J 50 MJ to J 250 MJ to J 500 MJ to J 1,000 MJ to J 5,000 MJ to J 10,000 MJ to J 25,000 MJ to J 100,000 MJ to J 115,200,000 MJ to J 256,000,000 MJ to J 512,000,000 MJ to J
Reverse Conversions
50 J to MJ 100 J to MJ 1,000 J to MJ 2,500 J to MJ 5,000 J to MJ 10,000 J to MJ 50,000 J to MJ 102,400,000 J to MJ 115,200,000 J to MJ 153,600,000 J to MJ 204,800,000 J to MJ 512,000,000 J to MJ
More Energy Conversions
1 GJ to MJ 1 MJ to BTU 100 J to cal 1 GJ to kWh 2 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 MJ to kWh 10,000 J to kJ

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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

Boil 1 liter water 334 kJ
1 kWh 3.6 MJ
Gasoline liter 34 MJ
100 W bulb for 1 hour 0.1 kWh
AA battery 10 kJ
Food calorie 4184 J

Formula

J = MJ × 1000000

Example

Example: convert 128000000 megajoules to joules.

128000000 MJ = 1.28000000e+14 J

Conversion table

megajoules (MJ) joules (J)
1 MJ 1000000 J
2 MJ 2000000 J
5 MJ 5000000 J
10 MJ 10000000 J
20 MJ 20000000 J
50 MJ 50000000.00000001 J
100 MJ 100000000 J

Explanation

These are both units.

How to convert megajoules to joules

  1. Start with the value in megajoules (MJ).
  2. Multiply it by 1000000.
  3. The result is the measurement in joules (J).

Example: 128000000 MJ → 1.28000000e+14 J

Frequently Asked Questions

How much is 128000000 megajoules in joules?

128000000 megajoules equals 128000000000000 joules.

How many joules is 1 megajoule?

1 megajoule equals 1000000 joules.

How many megajoules is 1 joule?

1 joule equals 0.000001 megajoules.

What is the difference between megajoules and joules?

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 megajoules and joules 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 megajoule equal 1000000 joules?

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