Watt Seconds to Watt Hours: 1 Ws equals 0.000278 Wh. To convert watt seconds to watt hours, multiply by 0.000278 (Wh = Ws × 2.7778e-4). For example, 10 Ws = 0.002778 Wh.
How to Convert Watt Seconds to Watt Hours
To convert from watt seconds to watt hours, multiply the value by 0.000278. The conversion is linear, meaning doubling the input doubles the output.
Conversion Formula
- Watt Seconds to Watt Hours:
Wh = Ws × 2.7778e-4 - Watt Hours to Watt Seconds:
Ws = Wh ÷ 2.7778e-4
Watt Seconds to Watt Hours Conversion Chart
| Watt Seconds (Ws) | Watt Hours (Wh) |
|---|---|
| 0.1 | 2.77778e-5 |
| 0.25 | 6.94444e-5 |
| 0.5 | 0.000139 |
| 1 | 0.000278 |
| 2 | 0.000556 |
| 3 | 0.000833 |
| 5 | 0.001389 |
| 10 | 0.002778 |
| 20 | 0.005556 |
| 25 | 0.006944 |
| 50 | 0.013889 |
| 100 | 0.027778 |
| 250 | 0.069444 |
| 1000 | 0.277778 |
Understanding the Units
What is a Watt Second?
A watt-second is identical to one joule.
Common contexts: photography (flash energy), capacitor ratings.
What is a Watt Hour?
A watt-hour equals exactly 3,600 joules.
Common contexts: phone batteries, small device energy.