1 cal = 0.00116222 Wh
1 calorie equals 0.00116222 watt-hours. To convert calories to watt-hours, multiply the calorie value by 0.00116222. For quick reference: 1 cal = 0.00116222 Wh, 5 cal = 0.00581111 Wh, 10 cal = 0.0116222 Wh, 100 cal = 0.116222 Wh.
Watt-hours = Calories × 0.00116222Start with your value in calories.
Multiply the calorie value by 0.00116222. This is the exact conversion factor from calories to watt-hours.
The product is your value in watt-hours. For example, 5 cal × 0.00116222 = 0.00581111 Wh.
The exact factor from calories to watt-hours is 0.00116222.
Watt-hours = Calories × 0.00116222
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Calories (cal) | Watt-hours (Wh) |
|---|---|
| 0.001 cal | 1.1622 × 10^−6 Wh |
| 0.01 cal | 1.1622 × 10^−5 Wh |
| 0.1 cal | 0.00011622 Wh |
| 0.5 cal | 0.00058111 Wh |
| 1 cal | 0.0011622 Wh |
| 1.5 cal | 0.0017433 Wh |
| 2 cal | 0.0023244 Wh |
| 5 cal | 0.0058111 Wh |
| 10 cal | 0.011622 Wh |
| 20 cal | 0.023244 Wh |
| 50 cal | 0.058111 Wh |
| 100 cal | 0.11622 Wh |
| 200 cal | 0.23244 Wh |
| 250 cal | 0.29056 Wh |
| 500 cal | 0.58111 Wh |
| 1000 cal | 1.1622 Wh |
| 2000 cal | 2.3244 Wh |
| 2500 cal | 2.9056 Wh |
| 3600 cal | 4.184 Wh |
| 5000 cal | 5.8111 Wh |
| 7500 cal | 8.7167 Wh |
| 10000 cal | 11.622 Wh |
| 25000 cal | 29.056 Wh |
| 50000 cal | 58.111 Wh |
| 100000 cal | 116.22 Wh |
| 250000 cal | 290.56 Wh |
| 500000 cal | 581.11 Wh |
| 1000000 cal | 1162.2 Wh |
| 2000000 cal | 2324.4 Wh |
| 3600000 cal | 4184 Wh |
| 5000000 cal | 5811.1 Wh |
| 10000000 cal | 11622 Wh |
| 25000000 cal | 29056 Wh |
| 50000000 cal | 58111 Wh |
| 100000000 cal | 116222 Wh |
| 250000000 cal | 290556 Wh |
| 500000000 cal | 581111 Wh |
| 1000000000 cal | 1162222 Wh |
| 2000000000 cal | 2324444 Wh |
| 5000000000 cal | 5811111 Wh |
| 10000000000 cal | 11622222 Wh |
| 20000000000 cal | 23244444 Wh |
| 50000000000 cal | 58111111 Wh |
| 100000000000 cal | 116222222 Wh |
| 1000000000000 cal | 1162222222 Wh |
| 10000000000000 cal | 11622222222 Wh |
| 100000000000000 cal | 116222222222 Wh |
| 1000000000000000 cal | 1162222222222 Wh |
| 10000000000000000 cal | 11622222222222 Wh |
| 100000000000000000 cal | 116222222222222 Wh |
Burning a single dietary calorie of fat releases about 4.184 kJ of heat. A wooden match releases roughly 1,000 small calories.
Convertitive uses the thermochemical (small) calorie, defined as exactly 4.184 joules — the energy needed to raise 1 g of water by 1 °C. Do not confuse it with the large calorie (kcal) used on US nutrition labels, which is 1,000 of these small calories.
The watt-hour (Wh) equals 3,600 joules — the energy delivered by one watt of power over one hour. It is the natural unit for batteries, small electronics, and short-duration electrical loads.