Convert Calorie to Watt Hour
Use this free converter to change calories (cal) into watt hours (Wh). Calorie and watt hour both measure energy. As a quick reference, 1 cal equals 0.0011622222 Wh, and 1 Wh equals 860.42065 cal.
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Watt Hour (Wh)
0.0011622222
1 cal = 0.0011622222 Wh
Energy conversion table
| Calorie | Watt Hour |
|---|---|
| 0.01 | 0.000011622222 |
| 0.1 | 0.00011622222 |
| 0.5 | 0.00058111111 |
| 1 | 0.0011622222 |
| 2 | 0.0023244444 |
| 3 | 0.0034866667 |
| 5 | 0.0058111111 |
| 10 | 0.011622222 |
| 20 | 0.023244444 |
| 25 | 0.029055556 |
| 50 | 0.058111111 |
| 100 | 0.11622222 |
| 1,000 | 1.1622222 |
How to convert Calorie to Watt Hour
Multiply the calorie value by 0.0011622222 to get watt hours.
- Enter the number of calories you want to convert.
- The converter instantly shows the equivalent value in watt hours.
- Worked example: 15 cal × 0.0011622222 = 0.017433333 Wh.
- Use the swap button to reverse the conversion (watt hour to calorie).
About these units
Calorie (cal)
- Definition
- A calorie (cal) is the energy needed to raise one gram of water by one degree Celsius, about 4.184 joules.
- History
- Defined in the 19th century, the small calorie was later joined by the larger food Calorie.
- Current use
- Calories appear in chemistry and, as kilocalories, in nutrition.
Watt Hour (Wh)
- Definition
- A watt-hour (Wh) is the energy of one watt sustained for one hour, equal to 3,600 joules.
- History
- It arose with the electricity industry as a practical billing unit.
- Current use
- Watt-hours rate batteries and small energy stores.
Frequently asked questions
How many watt hours are in a calorie?
There are 0.0011622222 Wh in 1 cal. To convert, multiply the number of calories by 0.0011622222.
How do I convert calories to watt hours?
Multiply the calorie value by 0.0011622222 to get watt hours. For example, 10 cal = 0.011622222 Wh.
Is this calorie-to-watt hour converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Calorie to other energy units
| Unit | 1 Calorie equals |
|---|---|
| Joule (J) | 4.184 J |
| Kilojoule (kJ) | 0.004184 kJ |
| Kilocalorie (kcal) | 0.001 kcal |
| Watt Hour (Wh) | 0.0011622222 Wh |
| Kilowatt Hour (kWh) | 0.0000011622222 kWh |
| Electronvolt (eV) | 2.6114e+19 eV |
| British Thermal Unit (BTU) | 0.0039656668 BTU |
| Foot-Pound (ft·lb) | 3.08596 ft·lb |