Convert Watt Hour to Kilocalorie
Use this free converter to change watt hours (Wh) into kilocalories (kcal). Watt hour and kilocalorie both measure energy. As a quick reference, 1 Wh equals 0.86042065 kcal, and 1 kcal equals 1.1622222 Wh.
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Kilocalorie (kcal)
0.86042065
1 Wh = 0.86042065 kcal
Energy conversion table
| Watt Hour | Kilocalorie |
|---|---|
| 0.01 | 0.0086042065 |
| 0.1 | 0.086042065 |
| 0.5 | 0.43021033 |
| 1 | 0.86042065 |
| 2 | 1.7208413 |
| 3 | 2.581262 |
| 5 | 4.3021033 |
| 10 | 8.6042065 |
| 20 | 17.208413 |
| 25 | 21.510516 |
| 50 | 43.021033 |
| 100 | 86.042065 |
| 1,000 | 860.42065 |
How to convert Watt Hour to Kilocalorie
Multiply the watt hour value by 0.86042065 to get kilocalories.
- Enter the number of watt hours you want to convert.
- The converter instantly shows the equivalent value in kilocalories.
- Worked example: 15 Wh × 0.86042065 = 12.90631 kcal.
- Use the swap button to reverse the conversion (kilocalorie 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.
Kilocalorie (kcal)
- Definition
- A kilocalorie (kcal) is 1,000 small calories — the "Calorie" used on food labels.
- History
- It was adopted by nutritionists as a practical measure of food energy.
- Current use
- Kilocalories (food Calories) measure the energy content of food and diets.
Frequently asked questions
How many kilocalories are in a watt hour?
There are 0.86042065 kcal in 1 Wh. To convert, multiply the number of watt hours by 0.86042065.
How do I convert watt hours to kilocalories?
Multiply the watt hour value by 0.86042065 to get kilocalories. For example, 10 Wh = 8.6042065 kcal.
Is this watt hour-to-kilocalorie 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 |