Convert Joules to Megawatt-hours

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

Results in Megawatt-hours:
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1 J = 2.7778E-10 MWh

How to Convert Joules to Megawatt-hours

To convert a joule measurement to a megawatt-hour measurement, multiply the energy by the conversion ratio. One joule is equal to 2.7778E-10 megawatt-hours, so use this simple formula to convert:

megawatt-hours = joules × 2.7778E-10

The energy in megawatt-hours is equal to the joules multiplied by 2.7778E-10.

For example, here's how to convert 5 joules to megawatt-hours using the formula above.
5 J = (5 × 2.7778E-10) = 1.3889E-9 MWh

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


The joule is the energy equal to the force on an object of one newton at a distance of one meter. 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.


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 can be abbreviated as MWh, for example 1 megawatt-hour can be written as 1 MWh.

Joule Measurements and Equivalent Megawatt-hour Conversions

Common joule values converted to the equivalent megawatt-hour value
Joules Megawatt-hours
1 J 0.00000000027778 MWh
2 J 0.00000000055556 MWh
3 J 0.00000000083333 MWh
4 J 0.0000000011111 MWh
5 J 0.0000000013889 MWh
6 J 0.0000000016667 MWh
7 J 0.0000000019444 MWh
8 J 0.0000000022222 MWh
9 J 0.0000000025 MWh
10 J 0.0000000027778 MWh
11 J 0.0000000030556 MWh
12 J 0.0000000033333 MWh
13 J 0.0000000036111 MWh
14 J 0.0000000038889 MWh
15 J 0.0000000041667 MWh
16 J 0.0000000044444 MWh
17 J 0.0000000047222 MWh
18 J 0.000000005 MWh
19 J 0.0000000052778 MWh
20 J 0.0000000055556 MWh
21 J 0.0000000058333 MWh
22 J 0.0000000061111 MWh
23 J 0.0000000063889 MWh
24 J 0.0000000066667 MWh
25 J 0.0000000069444 MWh
26 J 0.0000000072222 MWh
27 J 0.0000000075 MWh
28 J 0.0000000077778 MWh
29 J 0.0000000080556 MWh
30 J 0.0000000083333 MWh
31 J 0.0000000086111 MWh
32 J 0.0000000088889 MWh
33 J 0.0000000091667 MWh
34 J 0.0000000094444 MWh
35 J 0.0000000097222 MWh
36 J 0.00000001 MWh
37 J 0.000000010278 MWh
38 J 0.000000010556 MWh
39 J 0.000000010833 MWh
40 J 0.000000011111 MWh

More Joule Energy Conversions

Convert to Kilojoules
1 J is equal to 0.001 kilojoules
Convert to Megajoules
1 J is equal to 1.0E-6 megajoules
Convert to Gigajoules
1 J is equal to 1.0E-9 gigajoules
Convert to Calories
1 J is equal to 0.239006 calories
Convert to Kilocalories
1 J is equal to 0.000239 kilocalories
Convert to Megacalories
1 J is equal to 2.3901E-7 megacalories
Watts x Time
Convert to Watt-hours
1 J is equal to 0.000278 watt-hours
Convert to Kilowatt-hours
1 J is equal to 2.7778E-7 kilowatt-hours
Convert to Watt-seconds
1 J is equal to 1 watt-seconds
Thermal Units
Convert to British Thermal Units
1 J is equal to 0.000948 british thermal units
Convert to Million BTU
1 J is equal to 9.4782E-10 million BTU
Convert to Therms
1 J is equal to 9.4782E-9 therms
Convert to Quads
1 J is equal to 9.4782E-19 quads
Convert to Electronvolts
1 J is equal to 6,241,500,000,000,000,000 electronvolts
Convert to Kiloelectronvolts
1 J is equal to 6,241,500,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 J is equal to 6,241,509,343,260.2 megaelectronvolts