Joules to Megajoules Converter

Enter the energy in joules below to convert it to megajoules.

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Result in Megajoules:

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1 J = 1.0E-6 MJ
Hint: use a scientific notation calculator to convert E notation to decimal

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How to Convert Joules to Megajoules

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To convert a measurement in joules to a measurement in megajoules, divide 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:

megajoules = joules ÷ 1,000,000

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

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

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

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.

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.

Joule to Megajoule Conversion Table

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

References

  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

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