Convert Joules to Kilowatt-hours

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

Results in Kilowatt-hours:
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1 J = 2.7778E-7 kWh

How to Convert Joules to Kilowatt-hours

To convert a joule measurement to a kilowatt-hour measurement, multiply the energy by the conversion ratio. One joule is equal to 2.7778E-7 kilowatt-hours, so use this simple formula to convert:

kilowatt-hours = joules × 2.7778E-7

The energy in kilowatt-hours is equal to the joules multiplied by 2.7778E-7.

For example, here's how to convert 5 joules to kilowatt-hours using the formula above.
5 J = (5 × 2.7778E-7) = 1.3889E-6 kWh

Joules and kilowatt-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 kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-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.

Kilowatt-hours can be abbreviated as kWh, for example 1 kilowatt-hour can be written as 1 kWh.

Joule Measurements and Equivalent Kilowatt-hour Conversions

Common joule values converted to the equivalent kilowatt-hour value
Joules Kilowatt-hours
1 J 0.00000027778 kWh
2 J 0.00000055556 kWh
3 J 0.00000083333 kWh
4 J 0.0000011111 kWh
5 J 0.0000013889 kWh
6 J 0.0000016667 kWh
7 J 0.0000019444 kWh
8 J 0.0000022222 kWh
9 J 0.0000025 kWh
10 J 0.0000027778 kWh
11 J 0.0000030556 kWh
12 J 0.0000033333 kWh
13 J 0.0000036111 kWh
14 J 0.0000038889 kWh
15 J 0.0000041667 kWh
16 J 0.0000044444 kWh
17 J 0.0000047222 kWh
18 J 0.000005 kWh
19 J 0.0000052778 kWh
20 J 0.0000055556 kWh
21 J 0.0000058333 kWh
22 J 0.0000061111 kWh
23 J 0.0000063889 kWh
24 J 0.0000066667 kWh
25 J 0.0000069444 kWh
26 J 0.0000072222 kWh
27 J 0.0000075 kWh
28 J 0.0000077778 kWh
29 J 0.0000080556 kWh
30 J 0.0000083333 kWh
31 J 0.0000086111 kWh
32 J 0.0000088889 kWh
33 J 0.0000091667 kWh
34 J 0.0000094444 kWh
35 J 0.0000097222 kWh
36 J 0.00001 kWh
37 J 0.000010278 kWh
38 J 0.000010556 kWh
39 J 0.000010833 kWh
40 J 0.000011111 kWh

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 Megawatt-hours
1 J is equal to 2.7778E-10 megawatt-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