Watt-Hour to Kilojoule Converter
Convert watt-hour to kilojoule instantly.
Standard energy units
joule 360000
kilojoule 360
calorie 86042.065
kilocalorie 86.042
kilowatt-hour 0.1
BTU 341.213
Fun comparisons
apples eaten 🍎~ 1.04
hours of 100W bulb 💡~ 1
marathons run 🏃~ 0.12
full car tanks of fuel ⛽~ Less than 0.01
How to convert watt-hour to kilojoule
Enter your energy value in watt-hour and see the result in kilojoule instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Watt-hour is the unit for small electrical energy consumption like batteries and LED bulbs; kilojoule is used in physics and nutrition. One watt-hour equals 3.6 kilojoules.
Need the opposite direction? Convert kilojoule to watt-hour just as easily, or explore all our energy conversions.
Common watt-hour to kilojoule conversions
| Watt-Hour (Wh) | Kilojoule (kJ) |
|---|---|
| 1 | 3.6 |
| 5 | 18 |
| 10 | 36 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 500 | 1800 |
| 1000 | 3600 |
Frequently asked questions
1 watt-hour equals 3.6 kilojoule.
Multiply by 3.6. For example, 5 Wh = 18 kJ.
A 5 Wh battery holds 18 kilojoules.
1 kilojoule equals 0.277778 watt-hour.
100 watt-hour equals 360 kilojoule.