Convert Calories to Kilocalories
One calorie equals 0.001 kilocalories. Type any value to convert calories to kilocalories instantly — with a full reference table below.
Convert Calories to Kilocalories
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How to convert Calories to Kilocalories
To convert calories to kilocalories, multiply by 0.001. One calorie equals 0.001 kcal, and one kilocalorie equals 1,000 cal.
- Take the value in calories — for example 7.5 cal.
- Multiply by 0.001 (the number of kilocalories in one calorie).
- 7.5 × 0.001 = 0.0075 kcal.
Shortcut: the factor is a power of ten, so just move the decimal point 3 places to the left.
Calories to Kilocalories conversion table
| Calories | Kilocalories |
|---|---|
| 1 cal | 0.001 kcal |
| 2 cal | 0.002 kcal |
| 5 cal | 0.005 kcal |
| 10 cal | 0.01 kcal |
| 20 cal | 0.02 kcal |
| 50 cal | 0.05 kcal |
| 100 cal | 0.1 kcal |
| 200 cal | 0.2 kcal |
| 500 cal | 0.5 kcal |
| 1,000 cal | 1 kcal |
| 2,000 cal | 2 kcal |
| Kilocalories | Calories |
|---|---|
| 1 kcal | 1,000 cal |
| 2 kcal | 2,000 cal |
| 5 kcal | 5,000 cal |
| 10 kcal | 10,000 cal |
| 20 kcal | 20,000 cal |
| 50 kcal | 50,000 cal |
| 100 kcal | 100,000 cal |
| 200 kcal | 200,000 cal |
| 500 kcal | 500,000 cal |
| 1,000 kcal | 1,000,000 cal |
| 2,000 kcal | 2,000,000 cal |
About converting Calories to Kilocalories
Calories (cal) and Kilocalories (kcal) are both units of energy. The exact factor is 1 cal = 0.001 kcal, so multiply by 0.001 to go from calories to kilocalories (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Kilocalories to Calories converter, or the full unit converter for every unit at once.
Real-world energy in calories and kilocalories
| Example | Calories | Kilocalories |
|---|---|---|
| One food Calorie (kcal) | 1,000 cal | 1 kcal |
| A 100 W bulb running for one hour | 86,042.07 cal | 86.04207 kcal |
| A smartphone battery (≈19 Wh) | ≈ 16,563.1 cal | ≈ 16.5631 kcal |
| One kilowatt-hour | 860,420.7 cal | 860.4207 kcal |
“≈” marks typical values; the rest are defined or measured figures.
The units
The thermochemical calorie: exactly 4.184 J — energy to warm 1 g of water by about 1 °C.
Used for: Chemistry. Food 'Calories' are kilocalories.
1,000 calories, exactly 4,184 J — the 'Calorie' on food labels.
Used for: Nutrition and diets.
The thermochemical calorie is exactly 4.184 J and a kilowatt-hour is exactly 3.6 MJ, so these factors are exact.