Convert kilowatt-hours to joules instantly. Enter a value below, or use the formula and reference table further down the page.
Try
How to convert kilowatt-hours to joules
Multiply the value by 3600000.
J = kWh × 3600000Example: 10 kWh = 36000000 J.
Kilowatt-hours to Joules conversion table
| Kilowatt-hours (kWh) | Joules (J) |
|---|---|
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 3 kWh | 10800000 J |
| 4 kWh | 14400000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 15 kWh | 54000000 J |
| 20 kWh | 72000000 J |
| 25 kWh | 90000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
Frequently asked questions
How many joules is 1 kilowatt-hour?
1 kilowatt-hour equals 3600000 joules.
What is the formula to convert kWh to J?
To convert kWh to J, multiply the value by 3600000. The full formula is: J = kWh × 3600000.
How do I convert joules back to kilowatt-hours?
Use the same calculator above and type your value into the joules field instead — it converts in both directions. Or use the reverse formula: kWh = J ÷ 3600000.
Is the kWh to J conversion exact?
The conversion factor used here (3600000) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.