Convert Joule to Watt-hour
0.000277778
1 J = 0.00027777778 Wh
Use the conversion factor 1 J = 0.0002777777778 Wh. To convert Joule to Watt-hour, multiply the input value by 0.0002777777778.
Conversion Formula
Wh = J × 2.7778e-4
Reverse: J = Wh × 3600
Conversion Examples
1 J × 0.00027777778 =
0.00027777778 Wh
1 Joules = 0.00027777778 Watt-hours
5 J × 0.00027777778 =
0.0013888889 Wh
5 Joules = 0.0013888889 Watt-hours
10 J × 0.00027777778 =
0.0027777778 Wh
10 Joules = 0.0027777778 Watt-hours
25 J × 0.00027777778 =
0.0069444444 Wh
25 Joules = 0.0069444444 Watt-hours
50 J × 0.00027777778 =
0.013888889 Wh
50 Joules = 0.013888889 Watt-hours
100 J × 0.00027777778 =
0.027777778 Wh
100 Joules = 0.027777778 Watt-hours
Joule to Watt-hour Table
J =—Wh
| Joule (J) | Watt-hour (Wh) | Fraction |
|---|---|---|
| 100 | 0.027778 | 1/32 |
| 200 | 0.055556 | 1/16 |
| 300 | 0.083333 | 5/64 |
| 400 | 0.111111 | 7/64 |
| 500 | 0.138889 | 9/64 |
| 600 | 0.166667 | 11/64 |
| 700 | 0.194444 | 3/16 |
| 800 | 0.222222 | 7/32 |
| 900 | 0.25 | 1/4 |
| 1,000 | 0.277778 | 9/32 |
| 1,100 | 0.305556 | 5/16 |
| 1,200 | 0.333333 | 21/64 |
| 1,300 | 0.361111 | 23/64 |
| 1,400 | 0.388889 | 25/64 |
| 1,500 | 0.416667 | 27/64 |
| 1,600 | 0.444444 | 7/16 |
| 1,700 | 0.472222 | 15/32 |
| 1,800 | 0.5 | 1/2 |
| 1,900 | 0.527778 | 17/32 |
| 2,000 | 0.555556 | 9/16 |
Unit Definitions
What is a Joule (J)?
Metric (SI)Worldwide
Joule (J) is one of the two units used in this conversion. Open its dedicated unit page for the reviewed definition and references.
Learn more about JouleWhat is a Watt-hour (Wh)?
Metric (SI)Worldwide
Watt-hour (Wh) is one of the two units used in this conversion. Open its dedicated unit page for the reviewed definition and references.
Learn more about Watt-hourFrequently Asked Questions
How do I convert Joule to Watt-hour?
Multiply the value in J by 0.0002777777778. The formula is Wh = J × 0.0002777777778.
How many Watt-hour are in 1 Joule?
One Joule equals 0.0002777777778 Wh.
What is 1000000 J in Wh?
1000000 J equals 277.7777778 Wh.
How do I convert Watt-hour back to Joule?
Use the reverse factor: 1 Wh = 3600 J.