watt-hours to calories
Convert watt-hour to calorie (small) — instant, free, with the formula shown.
How to convert watt-hour to calorie (small)
To convert watt-hour to calorie (small), multiply by 860.4206501:
For example, 10 Wh × 860.42065 = 8604.206501 cal.
Wh to cal conversion table
| watt-hours (Wh) | calories (cal) |
|---|---|
| 1 Wh | 860.42065 cal |
| 2 Wh | 1720.8413 cal |
| 5 Wh | 4302.10325 cal |
| 10 Wh | 8604.206501 cal |
| 25 Wh | 21510.516252 cal |
| 50 Wh | 43021.032505 cal |
| 100 Wh | 86042.06501 cal |
| 250 Wh | 215105.162524 cal |
| 500 Wh | 430210.325048 cal |
| 1000 Wh | 860420.650096 cal |
Other watt-hour conversions
Convert to calorie (small) from another unit
Wh to cal — frequently asked
How many calories are in 1 watt-hour?
1 watt-hour = 860.42065 calories (Wh × 860.42065 = cal).
What is the formula to convert watt-hour to calorie (small)?
Multiply your watt-hour value by 860.4206501 to get calorie (small).
How do I convert 10 watt-hours to calories?
10 Wh = 8604.206501 cal. For 100 Wh the answer is 86042.06501 cal. Use the calculator on this page for any other value.
When to convert watt-hour to calorie (small)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.