Kilojoules to Watt-hours
Convert kilojoules (kJ) to watt-hours (Wh). Type in either box; the other updates as you go.
How to convert kilojoules to watt-hours
To convert kilojoules to watt-hours, divide the number of kilojoules by 3.6.
Example
Convert 5 kilojoules to watt-hours:
Kilojoule to watt-hour conversion chart
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 1 kJ | 0.2777778 Wh |
| 2 kJ | 0.5555556 Wh |
| 3 kJ | 0.8333333 Wh |
| 4 kJ | 1.111111 Wh |
| 5 kJ | 1.388889 Wh |
| 6 kJ | 1.666667 Wh |
| 7 kJ | 1.944444 Wh |
| 8 kJ | 2.222222 Wh |
| 9 kJ | 2.5 Wh |
| 10 kJ | 2.777778 Wh |
| 12 kJ | 3.333333 Wh |
| 15 kJ | 4.166667 Wh |
| 20 kJ | 5.555556 Wh |
| 25 kJ | 6.944444 Wh |
| 30 kJ | 8.333333 Wh |
| 40 kJ | 11.11111 Wh |
| 50 kJ | 13.88889 Wh |
| 60 kJ | 16.66667 Wh |
| 70 kJ | 19.44444 Wh |
| 75 kJ | 20.83333 Wh |
| 80 kJ | 22.22222 Wh |
| 90 kJ | 25 Wh |
| 100 kJ | 27.77778 Wh |
| 150 kJ | 41.66667 Wh |
| 200 kJ | 55.55556 Wh |
| 250 kJ | 69.44444 Wh |
| 500 kJ | 138.8889 Wh |
| 1,000 kJ | 277.7778 Wh |
Going the other way? See the watt-hours to kilojoules chart.
About the units
Kilojoule (kJ)
A kilojoule is 1,000 joules. Food labels in Australia and Europe give energy in kJ next to kcal.
Watt-hour (Wh)
A watt-hour is the energy of one watt for one hour, 3,600 joules. Batteries are rated in watt-hours.
Frequently asked questions
How many watt-hours are in a kilojoule?
There are 0.2777777778 watt-hours in a kilojoule.
How many kilojoules are in a watt-hour?
There are 3.6 kilojoules in a watt-hour.
How do you convert kilojoules to watt-hours?
To convert kilojoules to watt-hours, divide the number of kilojoules by 3.6.
What is 5 kilojoules in watt-hours?
5 kilojoules equals 1.38889 watt-hours.
Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.