File & Data Converters
Joules to Watt-hours Converter
Enter a value in joules to convert it to watt-hours, or switch units to convert the other way.
1 Joules = 0.000278 Watt-hours
All Joules conversions
Kilojoules
0.001
Calories
0.239006
Kilocalories
0.000239
Watt-hours
0.000278
Kilowatt-hours
0
How to use this tool
- 1Enter a value in joules.
- 2The result in watt-hours updates instantly.
- 3Use the swap button to convert watt-hours to joules instead.
Frequently asked questions
How many watt-hours is 1 joule?+
1 joule equals approximately 0.000278 watt-hours.