Home› Conversions› Energy› Joules to Watt-hours
Energy
Joules to Watt-hours
Convert joules (J) to watt-hours (Wh). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 J = 0.000278 Wh
Joules to Watt-hours Conversion Table
Common values, ready to copy:
| joules | watt-hours |
|---|---|
| 1 J | 0.000278 Wh |
| 2 J | 0.000556 Wh |
| 5 J | 0.001389 Wh |
| 10 J | 0.002778 Wh |
| 25 J | 0.006944 Wh |
| 50 J | 0.013889 Wh |
| 100 J | 0.027778 Wh |
| 1,000 J | 0.277778 Wh |
Ad slot reserved
Formula
watt-hours = joules × 2.77777778e-4
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
Related Conversions
Ad slot reserved