calories to watt-hours
Convert calorie (small) to watt-hour — instant, free, with the formula shown.
How to convert calorie (small) to watt-hour
To convert calorie (small) to watt-hour, multiply by 0.00116222:
For example, 10 cal × 0.001162 = 0.011622 Wh.
cal to Wh conversion table
| calories (cal) | watt-hours (Wh) |
|---|---|
| 1 cal | 0.001162 Wh |
| 2 cal | 0.002324 Wh |
| 5 cal | 0.005811 Wh |
| 10 cal | 0.011622 Wh |
| 25 cal | 0.029056 Wh |
| 50 cal | 0.058111 Wh |
| 100 cal | 0.116222 Wh |
| 250 cal | 0.290556 Wh |
| 500 cal | 0.581111 Wh |
| 1000 cal | 1.162222 Wh |
Other calorie (small) conversions
Convert to watt-hour from another unit
cal to Wh — frequently asked
How many watt-hours are in 1 calorie (small)?
1 calorie (small) = 0.001162 watt-hours (cal × 0.001162 = Wh).
What is the formula to convert calorie (small) to watt-hour?
Multiply your calorie (small) value by 0.00116222 to get watt-hour.
How do I convert 10 calories to watt-hours?
10 cal = 0.011622 Wh. For 100 cal the answer is 0.116222 Wh. Use the calculator on this page for any other value.
When to convert calorie (small) to watt-hour
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.