Megawatt-Hours to Joules Converter

Enter the energy in megawatt-hours below to get the value converted to joules.


Result in Joules:

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1 MWh = 3,600,000,000 J

Do you want to convert joules to megawatt-hours?

How to Convert Megawatt-Hours to Joules

To convert a measurement in megawatt-hours to a measurement in joules, multiply the energy by the following conversion ratio: 3,600,000,000 joules/megawatt-hour.

Since one megawatt-hour is equal to 3,600,000,000 joules, you can use this simple formula to convert:

joules = megawatt-hours × 3,600,000,000

The energy in joules is equal to the energy in megawatt-hours multiplied by 3,600,000,000.

For example, here's how to convert 5 megawatt-hours to joules using the formula above.
joules = (5 MWh × 3,600,000,000) = 18,000,000,000 J

How Many Joules Are in a Megawatt-Hour?

There are 3,600,000,000 joules in a megawatt-hour, which is why we use this value in the formula above.

1 MWh = 3,600,000,000 J

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

What Is a Megawatt-Hour?

A megawatt-hour is a measure of electrical energy equal to one megawatt, or 1,000,000 watts, of power over a one hour period. Megawatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Megawatt-hours are usually abbreviated as MWh, although the formally adopted expression is MW·h. The abbreviation MW h is also sometimes used. For example, 1 megawatt-hour can be written as 1 MWh, 1 MW·h, or 1 MW h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]

Learn more about megawatt-hours.

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.

Megawatt-Hour to Joule Conversion Table

Table showing various megawatt-hour measurements converted to joules.
Megawatt-hours Joules
0.000000001 MWh 3.6 J
0.000000002 MWh 7.2 J
0.000000003 MWh 10.8 J
0.000000004 MWh 14.4 J
0.000000005 MWh 18 J
0.000000006 MWh 21.6 J
0.000000007 MWh 25.2 J
0.000000008 MWh 28.8 J
0.000000009 MWh 32.4 J
0.0000000001 MWh 0.36 J
0.000000001 MWh 3.6 J
0.00000001 MWh 36 J
0.0000001 MWh 360 J
0.000001 MWh 3,600 J
0.00001 MWh 36,000 J
0.0001 MWh 360,000 J
0.001 MWh 3,600,000 J
0.01 MWh 36,000,000 J
0.1 MWh 360,000,000 J
1 MWh 3,600,000,000 J


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,

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