How to Convert Joules to Wh
To convert joules to wh, divide the value by 3597.12.
The Formula
Wh = Joules ÷ 3597.12
Key Fact
1 watt-hour = 3597.12 joules
Tip: To convert wh back to joules, multiply by 3597.12.
Joules to Wh
Convert joules (J) to wh (Wh) with formulas, examples, and conversion tables.
J
Wh
1 J = 0.000278 Wh
Full precision:0.000278 Wh
Step-by-Step Solution
To convert 1 joules to wh, we divide by 3597.12 because one watt-hour equals exactly 3597.12 joules.
1 watt-hour = 3597.12 joules
Since there are 3597.12 joules in every watt-hour, we divide our value by this factor:
1 ÷ 3597.12 = 0.000278 wh
So 1 joules = 0.000278 wh.
Quick check: 0.000278 × 3597.12 = 1 joules
Example Conversions
Example 1: 1 J = 0.000278 Wh
1 ÷ 3597.12 = 0.000278
1 ÷ 3597.12 = 0.000278
Example 2: 5 J = 0.00139 Wh
5 ÷ 3597.12 = 0.00139
5 ÷ 3597.12 = 0.00139
Example 3: 10 J = 0.00278 Wh
10 ÷ 3597.12 = 0.00278
10 ÷ 3597.12 = 0.00278
Joules to Wh Table
| Joules | Wh |
|---|---|
| 1 J | 0.000278 Wh |
| 2 J | 0.000556 Wh |
| 5 J | 0.00139 Wh |
| 10 J | 0.00278 Wh |
| 20 J | 0.00556 Wh |
| 25 J | 0.00695 Wh |
| 50 J | 0.0139 Wh |
| 100 J | 0.0278 Wh |
| 250 J | 0.0695 Wh |
| 500 J | 0.139 Wh |
| 1000 J | 0.278 Wh |
1 Joule in Other Units
| Unit | 1 J = |
|---|---|
| Joules to Wh | 0.000278 Wh |
| Joules to kWh | 2.78e-7 kWh |
| Joules to mWh | 0.278 mWh |
| Joules to mAh | 0.075135 mAh |
| Joules to Ah | 0.00007514 Ah |
| Joules to kJ | 0.001 kJ |