Calories to Watt-hours Converter
Convert calories (cal) to watt-hours (Wh) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Watt-hours
- 0.001162 Wh
How to use the calories to watt-hours converter
- Enter the calories (cal).
- The results update as you type, or press Calculate.
- Read the watt-hours first, then the supporting figures below it.
Formula
Watt-hours = calories × 0.0011622222
Worked example
For example, with these inputs:
- Calories (cal): 1
the calculator returns:
- Watt-hours: 0.001162 Wh
Calories to Watt-hours table
| Calories | Watt-hours |
|---|---|
| 1 cal | 0.001162 Wh |
| 2 cal | 0.002324 Wh |
| 5 cal | 0.005811 Wh |
| 10 cal | 0.011622 Wh |
| 20 cal | 0.023244 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 |
| 1,000 cal | 1.1622 Wh |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many watt-hours are in one calorie?
1 cal = 0.001162 Wh.
How do I convert cal to Wh?
Watt-hours = calories × 0.0011622222.