Energy
Watt-hours to Kilojoule
Convert watt-hours to kilojoule instantly.
About this conversion
Watt-hours (Wh) are used for battery capacity and electricity consumption reports. Kilojoule (kJ) = 1.000 J. EU-madevaredeklarationer skal angive energiindhold i kJ. En voksen har et dagsbehov på ca. 8.400 kJ, en banan indeholder ca. 370 kJ, og et glas appelsinjuice ca. 450 kJ. 1 Watt-hours equals 3.6 kilojoule. The converter above calculates the result instantly — you can also swap the units to convert in the other direction.
How to use
Enter a value in the watt-hours field and instantly see the result in kilojoule. Click the swap button to reverse the conversion.
Manual calculation
1 watt-hours = 3.6 kilojoule. Example: 10 Wh = 36 kJ.
Frequently asked questions
How do you convert watt-hours to kilojoule?
Multiply the number of watt-hours by 3.6 to get kilojoule. Example: 10 Wh × 3.6 = 36 kJ.
Are watt-hours bigger or smaller than kilojoule?
Watt-hours is larger than Kilojoule. One watt-hour equals 3.6 kilojoule, so the result is a larger number when converting from watt-hours to kilojoule.
What is 5 watt-hours in kilojoule?
5 Wh equals 18 kJ.
How many watt-hours are in 1 kilojoule?
1 kJ equals 0.27778 Wh. This is the reverse conversion — useful if you have a value in kilojoule and want it in watt-hours.
What is watt-hour?
Watt-hours (Wh) are used for battery capacity and electricity consumption reports.
What is kilojoule used for?
Kilojoule (kJ) = 1.000 J. EU-madevaredeklarationer skal angive energiindhold i kJ. En voksen har et dagsbehov på ca. 8.400 kJ, en banan indeholder ca. 370 kJ, og et glas appelsinjuice ca. 450 kJ.