Megajoules to Joules Converter

Enter the energy in megajoules below to get the value converted to joules.


Result in Joules:

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1 MJ = 1,000,000 J

Do you want to convert joules to megajoules?

How to Convert Megajoules to Joules

To convert a measurement in megajoules to a measurement in joules, multiply the energy by the following conversion ratio: 1,000,000 joules/megajoule.

Since one megajoule is equal to 1,000,000 joules, you can use this simple formula to convert:

joules = megajoules × 1,000,000

The energy in joules is equal to the energy in megajoules multiplied by 1,000,000.

For example, here's how to convert 5 megajoules to joules using the formula above.
joules = (5 MJ × 1,000,000) = 5,000,000 J

How Many Joules Are in a Megajoule?

There are 1,000,000 joules in a megajoule, which is why we use this value in the formula above.

1 MJ = 1,000,000 J

Megajoules and joules are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a Megajoule?

One megajoule is equal to 1,000,000 joules, which is the energy equal to the force on an object of one newton at a distance of one meter.

The megajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "mega" is the prefix for millions, or 106. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ.

Learn more about megajoules.

What Is a Joule?

The joule is the energy equal to the force on an object of one newton at a distance of one meter.[1] One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as J; for example, 1 joule can be written as 1 J.

Learn more about joules.

Megajoule to Joule Conversion Table

Table showing various megajoule measurements converted to joules.
Megajoules Joules
0.000001 MJ 1 J
0.000002 MJ 2 J
0.000003 MJ 3 J
0.000004 MJ 4 J
0.000005 MJ 5 J
0.000006 MJ 6 J
0.000007 MJ 7 J
0.000008 MJ 8 J
0.000009 MJ 9 J
0.0000001 MJ 0.1 J
0.000001 MJ 1 J
0.00001 MJ 10 J
0.0001 MJ 100 J
0.001 MJ 1,000 J
0.01 MJ 10,000 J
0.1 MJ 100,000 J
1 MJ 1,000,000 J


  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019,

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