Energy Converter
Result
... Watt-hour = ... Kilojoule
Result
... Watt-hour
=
... Kilojoule
Find the units to convert
Watt-hour to Kilojoule Converter
Use this page to convert watt-hour values into kilojoule, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 Wh = 3.6 kJ
1 kJ = 0.277777777777778 Wh
Example: 120 Wh = 432 kJ
Watt-hour
A watt-hour is the energy used by one watt over one hour.
History: It became practical with electrical metering and battery capacity descriptions.
Current use: Watt-hours are used for batteries, devices, solar systems, and electricity use.
Also written as Wh, watt hour, watt hours, watt-hours.
Kilojoule
A kilojoule equals 1,000 joules.
History: It is a decimal multiple adopted for practical energy values.
Current use: Kilojoules are used in nutrition and industrial energy figures.
Also written as kJ, kilojoules.
Watt-hour to Kilojoule table
| Watt-hour [Wh] | Kilojoule [kJ] |
|---|
| 0.01 Wh | 0.036 kJ |
| 0.1 Wh | 0.36 kJ |
| 1 Wh | 3.6 kJ |
| 2 Wh | 7.2 kJ |
| 5 Wh | 18 kJ |
| 10 Wh | 36 kJ |
| 20 Wh | 72 kJ |
| 50 Wh | 180 kJ |
| 100 Wh | 360 kJ |
Frequently asked questions
How many Kilojoule (kJ) are in one Watt-hour (Wh)?
One Watt-hour equals 3.6 Kilojoule.
How do you convert Watt-hour to Kilojoule?
Multiply the Watt-hour value by 3.6 to get the result in Kilojoule.
How do you convert Kilojoule back to Watt-hour?
Multiply the Kilojoule value by 0.277777777777778 to get back to Watt-hour.
What is 120 Watt-hour in Kilojoule?
120 Watt-hour equals 432 Kilojoule.
