Watt-hours to Kilojoules Converter
Convert watt-hours (Wh) to kilojoules (kJ) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Kilojoules
- 3.6 kJ
How to use the watt-hours to kilojoules converter
- Enter the watt-hours (Wh).
- The results update as you type, or press Calculate.
- Read the kilojoules first, then the supporting figures below it.
Formula
Kilojoules = watt-hours × 3.6
Worked example
For example, with these inputs:
- Watt-hours (Wh): 1
the calculator returns:
- Kilojoules: 3.6 kJ
Watt-hours to Kilojoules table
| Watt-hours | Kilojoules |
|---|---|
| 1 Wh | 3.6 kJ |
| 2 Wh | 7.2 kJ |
| 5 Wh | 18 kJ |
| 10 Wh | 36 kJ |
| 20 Wh | 72 kJ |
| 25 Wh | 90 kJ |
| 50 Wh | 180 kJ |
| 100 Wh | 360 kJ |
| 250 Wh | 900 kJ |
| 500 Wh | 1,800 kJ |
| 1,000 Wh | 3,600 kJ |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Frequently asked questions
How many kilojoules are in one watt-hour?
1 Wh = 3.6 kJ.
How do I convert Wh to kJ?
Kilojoules = watt-hours × 3.6.