Watt-hours to Kilojoules
Convert Wh to kJ. 1 watt-hour = 3.6 kJ, and 1 kilojoule = 0.277777777778 Wh.
Formula Multiply the value in watt-hours by 3.6. Watt-hours to Kilojoules table
1 watt-hour in every unit
| Joules | 3,600 | J |
|---|---|---|
| Kilojoules | 3.6 | kJ |
| Megajoules | 0.0036 | MJ |
| Calories | 860.420650096 | cal |
| Kilocalories | 0.860420650096 | kcal |
| Kilowatt-hours | 0.001 | kWh |
| British thermal units | 3.41214163313 | BTU |
| Foot-pounds | 2,655.2237374 | ft·lbf |
| Electronvolts | 2.246943e+22 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert watt-hours to kilojoules
Multiply the value in watt-hours by 3.6.
For example, 10 Wh = 36 kJ, and 10 kJ = 2.77777777778 Wh.
Frequently asked questions
How many kilojoules are in one watt-hour?
1 watt-hour = 3.6 kJ.
What is 10 Wh in kJ?
10 Wh = 36 kJ.
How do I convert kJ back to Wh?
Divide the value in kilojoules by 3.6. 1 kilojoule = 0.277777777778 Wh.
Watt-hours to Kilojoules table
| Watt-hours (Wh) | Kilojoules (kJ) |
|---|---|
| 0.1 | 0.36 |
| 0.5 | 1.8 |
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 6 | 21.6 |
| 7 | 25.2 |
| 8 | 28.8 |
| 9 | 32.4 |
| 10 | 36 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 30 | 108 |
| 50 | 180 |
| 75 | 270 |
| 100 | 360 |
| 250 | 900 |
| 500 | 1,800 |
| 1,000 | 3,600 |
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