Kilocalories to Calories
Convert kilocalories to calories instantly. 1 kcal = 1,000 cal. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert kilocalories to calories
To convert kilocalories to calories, multiply by 1,000. 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.
cal = kcal × 1,000
Kilocalories to Calories conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Kilocalories | Calories |
|---|---|
| 1 kcal | 1,000 cal |
| 2 kcal | 2,000 cal |
| 3 kcal | 3,000 cal |
| 5 kcal | 5,000 cal |
| 10 kcal | 10,000 cal |
| 20 kcal | 20,000 cal |
| 25 kcal | 25,000 cal |
| 50 kcal | 50,000 cal |
| 100 kcal | 100,000 cal |
| 500 kcal | 500,000 cal |
| 1,000 kcal | 1,000,000 cal |
What is a kilocalory?
The food Calorie, equal to a thousand small calories.
What is a calory?
The small calorie: energy to raise one gram of water by one degree.
The formula
cal = kcal × 1,000
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 Calories
- Type the number of kilocalories you want to convert.
- Read the result in calories 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 calories to kilocalories page.
Kilocalories to Calories — frequently asked questions
How many calories are in a kilocalory?
One kilocalory equals 1,000 cal. cal = kcal × 1,000
What is the formula to convert kilocalories to calories?
The formula is cal = kcal × 1,000. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert calories back to kilocalories?
Divide instead of multiplying: one calory is 0.001 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 calories 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
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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