Kilocalories to Watt-hours
Convert kilocalories to watt-hours instantly. 1 kcal = 1.1622222222 Wh. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert kilocalories to watt-hours
To convert kilocalories to watt-hours, multiply by 1.1622222222. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
Wh = kcal × 1.1622222222
Kilocalories to Watt-hours conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Kilocalories | Watt-hours |
|---|---|
| 1 kcal | 1.162222 Wh |
| 2 kcal | 2.324444 Wh |
| 3 kcal | 3.486667 Wh |
| 5 kcal | 5.811111 Wh |
| 10 kcal | 11.622222 Wh |
| 20 kcal | 23.244444 Wh |
| 25 kcal | 29.055556 Wh |
| 50 kcal | 58.111111 Wh |
| 100 kcal | 116.222222 Wh |
| 500 kcal | 581.111111 Wh |
| 1,000 kcal | 1,162.22 Wh |
What is a kilocalory?
The food Calorie, equal to a thousand small calories.
What is a watt-hour?
One watt sustained for one hour. Battery capacity is quoted this way.
The formula
Wh = kcal × 1.1622222222
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Kilocalories to Watt-hours
- Type the number of kilocalories you want to convert.
- Read the result in watt-hours straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked watt-hours to kilocalories page.
Kilocalories to Watt-hours — frequently asked questions
How many watt-hours are in a kilocalory?
One kilocalory equals 1.1622222222 Wh. Wh = kcal × 1.1622222222
What is the formula to convert kilocalories to watt-hours?
The formula is Wh = kcal × 1.1622222222. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert watt-hours back to kilocalories?
Divide instead of multiplying: one watt-hour is 0.8604206501 kcal. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this kilocalories to watt-hours free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the kilocalories to watt-hours.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error