Convert Watt Hour to Calorie
Use this free converter to change watt hours (Wh) into calories (cal). Watt hour and calorie both measure energy. As a quick reference, 1 Wh equals 860.42065 cal, and 1 cal equals 0.0011622222 Wh.
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Calorie (cal)
860.42065
1 Wh = 860.42065 cal
Energy conversion table
| Watt Hour | Calorie |
|---|---|
| 0.01 | 8.6042065 |
| 0.1 | 86.042065 |
| 0.5 | 430.21033 |
| 1 | 860.42065 |
| 2 | 1720.8413 |
| 3 | 2581.262 |
| 5 | 4302.1033 |
| 10 | 8604.2065 |
| 20 | 17208.413 |
| 25 | 21510.516 |
| 50 | 43021.033 |
| 100 | 86042.065 |
| 1,000 | 860420.65 |
How to convert Watt Hour to Calorie
Multiply the watt hour value by 860.42065 to get calories.
- Enter the number of watt hours you want to convert.
- The converter instantly shows the equivalent value in calories.
- Worked example: 15 Wh × 860.42065 = 12906.31 cal.
- Use the swap button to reverse the conversion (calorie to watt hour).
About these units
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.
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.
Frequently asked questions
How many calories are in a watt hour?
There are 860.42065 cal in 1 Wh. To convert, multiply the number of watt hours by 860.42065.
How do I convert watt hours to calories?
Multiply the watt hour value by 860.42065 to get calories. For example, 10 Wh = 8604.2065 cal.
Is this watt hour-to-calorie 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 Watt Hour to other energy units
| Unit | 1 Watt Hour equals |
|---|---|
| Joule (J) | 3600 J |
| Kilojoule (kJ) | 3.6 kJ |
| Calorie (cal) | 860.42065 cal |
| Kilocalorie (kcal) | 0.86042065 kcal |
| Kilowatt Hour (kWh) | 0.001 kWh |
| Electronvolt (eV) | 2.2469e+22 eV |
| British Thermal Unit (BTU) | 3.4121416 BTU |
| Foot-Pound (ft·lb) | 2655.2237 ft·lb |