Joule [J] to Kilowatt-hour [kWh] Converter
Quick Reference
1 Joule (J) = 2.7778e-7 Kilowatt-hour (kWh)
1 Kilowatt-hour (kWh) = 3600000 Joule (J)
How to Convert Joule to Kilowatt-hour
1 J = 2.7778e-7 kWh
1 kWh = 3600000 J
To convert Joule to Kilowatt-hour, divide the value by 3600000 (equivalently, multiply by 2.7778e-7). To convert Kilowatt-hour back to Joule, multiply by 3600000.
Example: convert 10 J to kWh:
10 J = 10 x 2.7778e-7 = 2.7778e-6 kWh
Joule
Definition: The joule (symbol: J) is the SI derived unit of energy. It is defined as the energy transferred to (or work done on) an object when a force of one newton acts on that object in the direction of its motion through a distance of one metre (1 newton metre or N⋅m).
History/origin: Named after James Prescott Joule, an English physicist. Joule experimentally determined the mechanical equivalent of heat.
Current use: Used universally in science and engineering to quantify energy, work, and heat. Examples include kinetic energy, potential energy, and heat content of materials.
Kilowatt-hour
Definition: A kilowatt-hour (symbol kWh) is a unit of energy equal to one kilowatt (1,000 watts) of power sustained for one hour. It is a standard unit for measuring electrical energy consumption.
History/origin: The kilowatt-hour became widely adopted with the expansion of electrical grids and the need for a practical unit to measure household and industrial energy usage.
Current use: Kilowatt-hours are the standard unit used by utility companies to bill consumers for electricity usage. It's also used to specify the energy output of power plants and the energy consumption of large appliances.
Joule to Kilowatt-hour Conversion Table
| Joule [J] | Kilowatt-hour [kWh] |
|---|---|
| 1 J | 2.7778e-7 kWh |
| 2 J | 5.5556e-7 kWh |
| 5 J | 1.3889e-6 kWh |
| 10 J | 2.7778e-6 kWh |
| 20 J | 5.5556e-6 kWh |
| 50 J | 1.3889e-5 kWh |
| 100 J | 2.7778e-5 kWh |
| 200 J | 5.5556e-5 kWh |
| 500 J | 0.0001388888889 kWh |
| 1000 J | 0.0002777777778 kWh |
Common Joule to Kilowatt-hour conversions
- 1 J = 0.0000002777777778 kWh
- 2 J = 0.0000005555555556 kWh
- 3 J = 0.0000008333333333 kWh
- 4 J = 0.000001111111111 kWh
- 5 J = 0.000001388888889 kWh
- 6 J = 0.000001666666667 kWh
- 7 J = 0.000001944444444 kWh
- 8 J = 0.000002222222222 kWh
- 9 J = 0.0000025 kWh
- 10 J = 0.000002777777778 kWh
- 12 J = 0.000003333333333 kWh
- 15 J = 0.000004166666667 kWh
- 20 J = 0.000005555555556 kWh
- 25 J = 0.000006944444444 kWh
- 30 J = 0.000008333333333 kWh
- 40 J = 0.00001111111111 kWh
- 50 J = 0.00001388888889 kWh
- 60 J = 0.00001666666667 kWh
- 75 J = 0.00002083333333 kWh
- 100 J = 0.00002777777778 kWh
- 150 J = 0.00004166666667 kWh
- 200 J = 0.00005555555556 kWh
- 250 J = 0.00006944444444 kWh
- 300 J = 0.00008333333333 kWh
- 500 J = 0.0001388888889 kWh
- 750 J = 0.0002083333333 kWh
- 1,000 J = 0.0002777777778 kWh
Common pairs of Energy
Watt-hour
Milliwatt-hour
Kilowatt-hour
Megawatt-hour
Gigawatt-hour
Joule