MJ → GJ converter

Convert megajoule to gigajoule (Energy)

1 MJ = 0.001 GJ · 1 GJ = 1000 MJ

Common values: 10 MJ 50 MJ 100 MJ 500 MJ 1000 MJ

100 MJ = 0.1 GJ

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Megajoule to gigajoule Conversion

1 megajoule (MJ) is equal to 0.001 gigajoule (GJ).

1 MJ = 0.001 GJ

or

1 GJ = 1000 MJ

Formula

To convert a energy from megajoule (MJ) to gigajoule (GJ), divide the energy in megajoule by 1000

e(GJ) = e(MJ) / 1000

Examples:

Convert 100 megajoule to gigajoule:

e(GJ) = 100MJ / 1000 = 0.1 GJ

Conversion table

Megajoule (MJ) Gigajoule (GJ)
1 MJ 0.001 GJ
2 MJ 0.002 GJ
3 MJ 0.003 GJ
5 MJ 0.005 GJ
10 MJ 0.01 GJ
20 MJ 0.02 GJ
25 MJ 0.025 GJ
50 MJ 0.05 GJ
100 MJ 0.1 GJ
250 MJ 0.25 GJ
500 MJ 0.5 GJ
1000 MJ 1 GJ
Gigajoule (GJ) Megajoule (MJ)
1 GJ 1000 MJ
2 GJ 2000 MJ
3 GJ 3000 MJ
5 GJ 5000 MJ
10 GJ 10000 MJ
20 GJ 20000 MJ
25 GJ 25000 MJ
50 GJ 50000 MJ
100 GJ 100000 MJ
250 GJ 250000 MJ
500 GJ 500000 MJ
1000 GJ 1000000 MJ

Frequently asked questions

How do I convert megajoule to gigajoule?

Divide the value in megajoule by 1000 to get the result in gigajoule. For example, 5 MJ ÷ 1000 = 0.005 GJ.

How many gigajoule are in 1 megajoule?

1 megajoule (MJ) is equal to 0.001 gigajoule (GJ).

How do I convert gigajoule back to megajoule?

Use the inverse operation: multiply the value in gigajoule by 1000 to get the result in megajoule.

How accurate is the megajoule to gigajoule conversion?

The converter multiplies by the conversion factor 1000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards:

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