Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
5 MJ → J 100 MJ → J 500 MJ → J 640 MJ → J 880 MJ → J 960 MJ → J 1,920 MJ → J 2,500 MJ → J 3,200 MJ → J 16,000 MJ → J 50,000 MJ → J 100,000 MJ → J
Reverse Conversions
5 J → MJ 10 J → MJ 25 J → MJ 50 J → MJ 100 J → MJ 720 J → MJ 960 J → MJ 1,280 J → MJ 1,600 J → MJ 5,000 J → MJ 10,000 J → MJ 25,000 J → MJ
More Energy Conversions
1 MJ → BTU 100 J → cal 1 GJ → kWh 1 GJ → MJ 2 MJ → BTU 100 kJ → kcal 1 MJ → kWh 2 GJ → MJ 10 BTU → J 250 cal → J

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Popular Conversions

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Common Benchmarks

AA battery 10 kJ
Cup of coffee 5 kJ
Match stick 1 kJ
Phone battery 40 kJ
Microwave 10 minutes 0.17 kWh
Gasoline liter 34 MJ

Formula

J = MJ × 1000000

Example

Example: convert 800 megajoules to joules.

800 MJ = 800000000 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: 800 MJ → 800000000 J

Frequently Asked Questions

How much is 800 megajoules in joules?

800 megajoules equals 800000000 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.