Energy conversion
1 kilowatt-hour (kWh) equals 3,600 kilojoule (kJ). Enter any value below to convert from kWh to kJ.
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1 kWh = 3,600 kJ
| Unit | Value |
|---|---|
| Joule J | 3,600,000 |
| Kilojoule kJ | 3,600 |
| Thermochemical calorie cal | 860,420.6500956023 |
| Kilocalorie kcal | 860.4206500956 |
| Watt-hour Wh | 1,000 |
| Kilowatt-hour kWh | 1 |
| BTU (International Table) BTUₕᵀ | 3,412.1416331279 |
| Foot-pound ft·lb | 2,655,223.7373981564 |
| Electronvolt eV | 2.2469432668e25 |
Formula
Use this relationship for a direct conversion:
2 kWh = 7,200 kJ.
The thermochemical calorie and International Table BTU are named explicitly to avoid ambiguous legacy definitions.
Quick reference
| Kilowatt-hour (kWh) | Kilojoule (kJ) |
|---|---|
| 0.01 | 36 |
| 0.1 | 360 |
| 1 | 3,600 |
| 2 | 7,200 |
| 5 | 18,000 |
| 10 | 36,000 |
| 25 | 90,000 |
| 50 | 180,000 |
| 100 | 360,000 |
| 1,000 | 3,600,000 |
From unit
One thousand watt-hours.
Symbol: kWh
To unit
One thousand joules.
Symbol: kJ
Keep converting
Source
Definitions are checked against NIST SP 811: Energy units. Calculations use full internal precision before display rounding.
View the complete energy converterQuestions
Use the formula kJ = kWh x 3,600. 1 kilowatt-hour (kWh) equals 3,600 kilojoule (kJ).
Both unit definitions use exact factors. Only the displayed decimal may be rounded.
