KWh to J conversion formula
1 kilowatt-hour = 3600000 joule
The kilowatt-hour (kWh) is the energy unit on your electricity bill — 3.6 million joules.
The joule (J) is the SI unit of energy — roughly the energy to lift an apple one meter. The base for all other energy units.
KWh to J conversion table
| kWh | J |
|---|---|
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 3 kWh | 10800000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 20 kWh | 72000000 J |
| 25 kWh | 90000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
| 250 kWh | 900000000 J |
| 500 kWh | 1800000000 J |
| 1000 kWh | 3600000000 J |
How to convert kWh to J
- Write down the value in kWh you want to convert.
- Multiply it by 3600000 — or use the converter above, which does it instantly.
- Read your result in J. Done.
Frequently asked questions
How many J is 1 kWh?
Using the official conversion factor, 1 kilowatt-hour = 3600000 joule. The converter above handles any value instantly.
What is the formula to convert kilowatt-hour to joule?
1 kilowatt-hour = 3600000 joule. Multiply any value in kWh by this factor to get J.
Is this kWh to J converter free?
Yes — 100% free, unlimited, with no sign-up. CalculUnits is funded by non-intrusive ads, never by paywalls.