Convert Calorie to Kilocalorie
Use this free converter to change calories (cal) into kilocalories (kcal). Calorie and kilocalorie both measure energy. As a quick reference, 1 cal equals 0.001 kcal, and 1 kcal equals 1000 cal.
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Kilocalorie (kcal)
0.001
1 cal = 0.001 kcal
Energy conversion table
| Calorie | Kilocalorie |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
How to convert Calorie to Kilocalorie
Multiply the calorie value by 0.001 to get kilocalories.
- Enter the number of calories you want to convert.
- The converter instantly shows the equivalent value in kilocalories.
- Worked example: 15 cal × 0.001 = 0.015 kcal.
- Use the swap button to reverse the conversion (kilocalorie to calorie).
About these units
Calorie (cal)
- Definition
- A calorie (cal) is the energy needed to raise one gram of water by one degree Celsius, about 4.184 joules.
- History
- Defined in the 19th century, the small calorie was later joined by the larger food Calorie.
- Current use
- Calories appear in chemistry and, as kilocalories, in nutrition.
Kilocalorie (kcal)
- Definition
- A kilocalorie (kcal) is 1,000 small calories — the "Calorie" used on food labels.
- History
- It was adopted by nutritionists as a practical measure of food energy.
- Current use
- Kilocalories (food Calories) measure the energy content of food and diets.
Frequently asked questions
How many kilocalories are in a calorie?
There are 0.001 kcal in 1 cal. To convert, multiply the number of calories by 0.001.
How do I convert calories to kilocalories?
Multiply the calorie value by 0.001 to get kilocalories. For example, 10 cal = 0.01 kcal.
Is this calorie-to-kilocalorie converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Calorie to other energy units
| Unit | 1 Calorie equals |
|---|---|
| Joule (J) | 4.184 J |
| Kilojoule (kJ) | 0.004184 kJ |
| Kilocalorie (kcal) | 0.001 kcal |
| Watt Hour (Wh) | 0.0011622222 Wh |
| Kilowatt Hour (kWh) | 0.0000011622222 kWh |
| Electronvolt (eV) | 2.6114e+19 eV |
| British Thermal Unit (BTU) | 0.0039656668 BTU |
| Foot-Pound (ft·lb) | 3.08596 ft·lb |