Kilocalories to Watt-hours (kcal to Wh) Converter
1 kilocalorie equals 1.162222 watt-hours — multiply kilocalories by 1.162222 to convert kcal to Wh. The factor comes from 4,184 joules per kcal divided by 3,600 joules per watt-hour.
The formula
To convert kilocalories to watt-hours, multiply by the exact factor:
Wh = kcal × 1.162222
For example, 500 kcal × 1.162222 = 581.111 Wh. Conveniently, a kilocalorie is a little over one watt-hour.
Conversion table
| Kilocalories (kcal) | Watt-hours (Wh) |
|---|---|
| 1 | 1.162222 |
| 2 | 2.324444 |
| 5 | 5.81111 |
| 10 | 11.62222 |
| 25 | 29.05555 |
| 50 | 58.1111 |
| 100 | 116.2222 |
| 500 | 581.111 |
| 1000 | 1,162.222 |
How to convert online
- Type the number of kilocalories into the first box.
- Read the watt-hour result instantly in the second box.
- Or enter a Wh value to convert back to kilocalories — it works both ways.
Use the Kilocalorie to Watt-hour Converter — free and instant in your browser.
Where this conversion is used
Watt-hours are how batteries and small power packs are rated, so converting kcal to Wh gives a vivid sense of how much energy is stored in food compared with everyday electronics. It is useful for energy-literacy examples, fitness and metabolism content, and rough comparisons between dietary intake and device battery capacity.
FAQ
How many watt-hours are in a kilocalorie?
One kilocalorie equals 1.162222 Wh.
How many kilocalories are in 1 Wh?
About 0.86042 kilocalories make up one watt-hour (the reciprocal of the factor).
How do I convert watt-hours back to kilocalories?
Divide the Wh value by 1.162222 (or multiply by 0.86042065). For example, 116.2222 Wh = 100 kcal.
Is the conversion exact?
1.162222 is a rounded display of 4,184 ÷ 3,600; the tool keeps full precision internally.
Related converters
- Watt-hour to Kilocalorie Converter
- Kilocalorie to Joule Converter
- Kilocalorie to Kilojoule Converter
- Kilocalorie to Kilowatt-hour Converter
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Recommended reading
Watt-hour to Kilowatt-hour (Wh to kWh) Converter
1 watt-hour equals 0.001 kilowatt-hours. Divide by 1000 to convert Wh to kWh, with the exact formula and a handy reference table.
Watt-hour to Kilojoule (Wh to kJ) Converter
1 watt-hour equals 3.6 kilojoules exactly. Use the formula, an easy factor and a reference table to convert Wh to kJ instantly and free.
Watt-hour to Kilocalorie (Wh to kcal) Converter
1 watt-hour equals 0.86042065 kilocalories. Use the exact factor, formula and a reference table to convert Wh to kcal fast and free.
Watt-hour to Joule Converter (Wh to J) + Formula
1 watt-hour equals 3,600 joules. Convert Wh to joules with the exact factor, a simple formula, and a reference table of common values.