How to convert kilocalories to calories
To convert kilocalories to calories, multiply by 1,000. Energy conversions connect nutrition, electricity bills, heating systems and physics.
Kilocalorie to Calorie conversion table
| Kilocalorie (kcal) | Calorie (cal) |
|---|---|
| 0.1 kcal | 100 cal |
| 0.5 kcal | 500 cal |
| 1 kcal | 1,000 cal |
| 2 kcal | 2,000 cal |
| 3 kcal | 3,000 cal |
| 4 kcal | 4,000 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 |
About the units
Kilocalorie (kcal)
A kilocalorie (food Calorie) equals 1,000 small calories, or 4,184 joules.
Calorie (cal)
A (small) thermochemical calorie is exactly 4.184 joules.
How to use this converter
- Type the number of kilocalories (kcal) in the input box.
- The result in calories appears instantly — no button needed.
- See the same value in every other energy unit just below.
- Use “Swap units” to convert calories back to kilocalories.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many calories are in one kilocalorie?
One kilocalorie equals 1,000 calories. 1,000 is the exact factor used by this converter.
How do I convert kilocalories to calories?
Multiply the value in kilocalories by 1,000. To go the other way, multiply calories by 0.001.
What is 10 kcal in cal?
10 kcal = 10,000 cal. Also, 5 kcal = 5,000 cal and 100 kcal = 100,000 cal.
What is the difference between a kilocalorie and a calorie?
A kilocalorie (food Calorie) equals 1,000 small calories, or 4,184 joules. A (small) thermochemical calorie is exactly 4.184 joules.
Is this tool free and private?
Yes — the Kilocalorie to Calorie is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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