Joule to Watt-hour Converter
J → Wh
Convert between joules, calories, BTU, kWh, and more energy units. Perfect for physics, nutrition, and electricity calculations.
Convert Joule to Watt-hour
How to Convert Joule to Watt-hour
Enter a value above, select your units, and get instant results. Works both ways — Joule to Watt-hour or Watt-hour to Joule.
Formula: Watt-hour = Joule × 0.000278
Quick steps
- Enter the value you want to convert in the "Joule" field.
- Select "Joule" as your "From" unit.
- Select "Watt-hour" as your "To" unit.
- The converted result appears instantly in the "Watt-hour" field.
- To reverse the conversion, enter a value in the "Watt-hour" field instead.
Common Joule to Watt-hour Conversions
| Joule | Watt-hour |
|---|---|
| 1 | 0.000278 |
| 5 | 0.001389 |
| 10 | 0.002778 |
| 25 | 0.006944 |
| 50 | 0.013889 |
| 100 | 0.027778 |
Frequently Asked Questions
Multiply your joule value by 0.000278. For example, 10 J = 0.002778 Wh.
Related Energy Converter Conversions
Learn More About Unit Conversions
Check out our comprehensive guides on unit conversions, measurement systems, and conversion tips.
More Energy Converter Converters
Explore all energy converter tools in our Energy Converter hub or try the bulk converter.