Kilojoule to Watt-Hour Converter
Convert kilojoule to watt-hour instantly.
Standard energy units
joule 100000
calorie 23900.574
kilocalorie 23.901
watt-hour 27.778
kilowatt-hour 0.0278
BTU 94.781
Fun comparisons
apples eaten 🍎~ 0.29
hours of 100W bulb 💡~ 0.28
marathons run 🏃~ 0.03
full car tanks of fuel ⛽~ Less than 0.01
How to convert kilojoule to watt-hour
Enter your energy value in kilojoule and see the result in watt-hour instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Kilojoule is used in nutrition and chemistry; watt-hour measures electrical energy for devices and batteries. One watt-hour equals 3.6 kilojoules.
Need the opposite direction? Convert watt-hour to kilojoule just as easily, or explore all our energy conversions.
Common kilojoule to watt-hour conversions
| Kilojoule (kJ) | Watt-Hour (Wh) |
|---|---|
| 1 | 0.277778 |
| 5 | 1.38889 |
| 10 | 2.77778 |
| 25 | 6.94444 |
| 50 | 13.8889 |
| 100 | 27.7778 |
| 500 | 138.889 |
| 1000 | 277.778 |
Frequently asked questions
1 kilojoule equals 0.277778 watt-hour.
Multiply by 0.277778. For example, 5 kJ = 1.38889 Wh.
36 kilojoules equals 10 watt-hours.
1 watt-hour equals 3.6 kilojoule.
100 kilojoule equals 27.7778 watt-hour.