Convert watt hours to calories
1 Wh = 860.42 cal. Change the amount below, or read the formula and the reference table further down.
1 watt hour equals
calories
1 Wh = 860.42 cal
The formula
Watt hours and calories both measure energy from the same zero, so a single multiplier does the job.
cal = Wh × 860.42
Going the other way? Convert calories to watt hours.
Watt hours to calories table
Common values, rounded for reading.
| Watt hours (Wh) | Calories (cal) |
|---|---|
| 1 | 860.42 |
| 2 | 1,720.84 |
| 3 | 2,581.26 |
| 4 | 3,441.68 |
| 5 | 4,302.1 |
| 6 | 5,162.52 |
| 7 | 6,022.94 |
| 8 | 6,883.37 |
| 9 | 7,743.79 |
| 10 | 8,604.21 |
| 15 | 12,906.31 |
| 20 | 17,208.41 |
| 25 | 21,510.52 |
| 30 | 25,812.62 |
| 40 | 34,416.83 |
| 50 | 43,021.03 |
| 75 | 64,531.55 |
| 100 | 86,042.07 |
| 250 | 215,105.16 |
| 500 | 430,210.33 |
| 1,000 | 860,420.65 |
Questions people ask
- How many calories are in a watt hour?
- One watt hour equals 860.42 calories.
- How do I convert watt hours to calories by hand?
- Multiply the number of watt hours by 860.42. For a rough check, 860.42 is close enough for most everyday use.
- What is 1 watt hour in calories?
- 1 watt hour is 860.42 calories.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.