Energy
Watt-hours to Joule
Convert watt-hours to joule instantly.
About this conversion
Watt-hours (Wh) are used for battery capacity and electricity consumption reports. Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule. 1 Watt-hours equals 3,600 joule. 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 joule. Click the swap button to reverse the conversion.
Manual calculation
1 watt-hours = 3,600 joule. Example: 10 Wh = 36,000 J.
Frequently asked questions
How do you convert watt-hours to joule?
Multiply the number of watt-hours by 3,600 to get joule. Example: 5 Wh × 3,600 = 18,000 J.
Are watt-hours bigger or smaller than joule?
Watt-hours is larger than Joule. One watt-hour equals 3,600 joule, so the result is a larger number when converting from watt-hours to joule.
What is 2 watt-hours in joule?
2 Wh equals 7,200 J.
How many watt-hours are in 1 joule?
1 J equals 0.00027778 Wh. This is the reverse conversion — useful if you have a value in joule and want it in watt-hours.
What is watt-hour?
Watt-hours (Wh) are used for battery capacity and electricity consumption reports.
What is joule used for?
Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule.