Calories to Kilocalories Converter cal → kcal
1 calorie (small) (cal) = 0.001 kilocalories (kcal). Type a value below — the conversion happens instantly, entirely on your device.
1 cal = 0.001 kcal
1 calories = 0.001 kilocalories
1 × 0.001 = 0.001
1 cal equals 0.001 kcal, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert calories to kilocalories
kilocalories = calories × 0.001 — multiply the calorie (small) value by 0.001.
Example: 10 cal = 0.01 kcal.
To convert the other way: calories = kilocalories ÷ 0.001 — or use the dedicated kcal to cal converter .
Calories to Kilocalories conversion table
| Calories (cal) | Kilocalories (kcal) |
|---|---|
| 0.1 | 0.0001 |
| 0.25 | 0.00025 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
About the units
What is a calorie (small)?
A small (gram) calorie (cal) is exactly 4.184 joules — the energy to heat 1 gram of water by 1 °C. Note that food "Calories" are actually kilocalories (1,000 small calories).
What is a kilocalorie?
A kilocalorie (kcal) is 4,184 joules — identical to the food "Calorie" (capital C) on US nutrition labels. A 2,000-Calorie diet is 2,000 kcal or 8,368 kJ.
Frequently asked questions
How many kilocalories are in 1 calorie (small)?
1 calorie (small) (cal) = 0.001 kilocalories (kcal).
What is the formula to convert calories to kilocalories?
kilocalories = calories × 0.001 — multiply the calorie (small) value by 0.001.
How do I convert cal to kcal without a calculator?
Multiply by 0.001 for a close estimate. Exact factor: 1 cal = 0.001 kcal.
Is this cal-to-kcal converter accurate and private?
Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.