Convert Kilowatt-hour to Joule
Live bidirectional calculator for Kilowatt-hours (kWh) and Joules (J) with verified formula and conversion charts.
Energy9 units
How the Calculation Works (Linear Scaling)
Since 1 Kilowatt-hour = 3600000 Joules, multiply the value in Kilowatt-hours by 3600000.
Kilowatt-hour to Joule Conversion Table
Precomputed values for quick reference and printing.
| Kilowatt-hour | Joule |
|---|---|
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 3 kWh | 10800000 J |
| 4 kWh | 14400000 J |
| 5 kWh | 18000000 J |
| 6 kWh | 21600000 J |
| 7 kWh | 25200000 J |
| 8 kWh | 28800000 J |
| 9 kWh | 32400000 J |
| 10 kWh | 36000000 J |
| 15 kWh | 54000000 J |
| 20 kWh | 72000000 J |
| 25 kWh | 90000000 J |
| 30 kWh | 108000000 J |
| 40 kWh | 144000000 J |
| 50 kWh | 180000000 J |
| 75 kWh | 270000000 J |
| 100 kWh | 360000000 J |
| Joule | Kilowatt-hour |
|---|---|
| 1 J | 2.7778e-7 kWh |
| 2 J | 5.5556e-7 kWh |
| 3 J | 8.3333e-7 kWh |
| 4 J | 1.1111e-6 kWh |
| 5 J | 1.3889e-6 kWh |
| 6 J | 1.6667e-6 kWh |
| 7 J | 1.9444e-6 kWh |
| 8 J | 2.2222e-6 kWh |
| 9 J | 2.5e-6 kWh |
| 10 J | 2.7778e-6 kWh |
| 15 J | 4.1667e-6 kWh |
| 20 J | 5.5556e-6 kWh |
| 25 J | 6.9444e-6 kWh |
| 30 J | 8.3333e-6 kWh |
| 40 J | 1.1111e-5 kWh |
| 50 J | 1.3889e-5 kWh |
| 75 J | 2.0833e-5 kWh |
| 100 J | 2.7778e-5 kWh |
๐ Standard Benchmark Reference Values
Utility electrical billing standard (3.6 MJ).
Exact RatioAbout Kilowatt-hour (kWh)
One thousand watt-hours, equal to exactly 3,600,000 joules (3.6 megajoules).
History: Primary billing unit for consumer and industrial electrical energy worldwide.
Common Uses: Home electric utility bills, electric vehicle (EV) battery packs (e.g. 75 kWh), solar panel generation.
About Joule (J)
The SI coherent derived unit of energy, equal to the work done by a force of one newton over a distance of one meter (1 Nยทm or 1 Wยทs).
History: Named in honor of English physicist James Prescott Joule for his experiments on the mechanical equivalent of heat.
Common Uses: Physics, mechanical work, kinetic energy, laser pulse energy.
โ Frequently Asked Questions
How many Joules are in 1 Kilowatt-hour?
There are exactly 3600000 Joules in 1 Kilowatt-hour (1 kWh = 3600000 J).
What is the formula to convert Kilowatt-hour to Joule?
The formula is: Joule = Kilowatt-hour ร 3600000. Since 1 Kilowatt-hour = 3600000 Joules, multiply the value in Kilowatt-hours by 3600000.
How do I convert 1 kWh to J manually?
To convert 1 kWh to J: apply the formula Joule = Kilowatt-hour ร 3600000. Substituting gives: 1 ร 3600000 = 3600000 J.