Converters
12
Watt-hours to Joules Converter
Convert watt-hours to joules instantly with the formula, worked examples, rounding guidance, and related energy conversions.
Units
85
Mode
Live
Pair-specific conversion guide
Watt-hour to Joule formula
Use this Watt-hour to Joule page for direct energy conversions. The calculator keeps the exact Wh to J relationship on the page, so the result, formula, and examples all describe this specific pair.
Formula model
1 Wh = 3600 J
1 Watt-hour equals
Quick factor: 1 Wh = 3600 J.
The current calculator value is 1 Wh, which equals 3600 J.
Use the conversion table to compare 1 Wh with the other units in the same category.
Energy units can describe electricity, heat, or nutrition, so retain the unit symbol with every result.
Precision and rounding
The calculation uses the catalog's fixed conversion factors between Wh and J. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsEnergy
Popular conversions
Joules to Watt-hours Converter
Popular conversions
Energy links
Conversion table
1 Watt-hour equals
| Unit | Value |
|---|---|
| Joule J | 3600 |
| Kilojoule kJ | 3.6 |
| Calorie cal | 860.420650096 |
| Kilocalorie kcal | 0.860420650096 |
| Kilowatt-hour kWh | 0.001 |
| British thermal unit BTU | 3.41214163313 |
FAQ
Watt-hour to Joule questions
How do you convert Watt-hour to Joule?
Use the formula 1 Wh = 3600 J. As a quick check, 1 Wh equals 3600 J.
Is the Watt-hour to Joule conversion exact?
This page uses fixed constants from the Converter Science catalog. Displayed results are rounded only to keep the page readable.