Convert Calories to Kilocalories
cal to kcal · energy conversion
What are calories and kilocalories?
A small calorie is the energy to heat one gram of water by 1 °C, about 4.184 J. A kilocalorie (the food Calorie) is 1,000 small calories, the unit on US nutrition labels. For reference: a food Calorie is one kilocalorie (4,184 J), and home electricity is billed in kilowatt-hours.
How to convert calories to kilocalories
1 cal = 0.001 kcal. To convert, multiply the number of calories by 0.001. For example, 5 cal = 0.005 kcal, and 20 cal = 0.02 kcal. To go the other way, multiply kilocalories by 1,000 (since 1 kcal = 1,000 cal).
Calories to Kilocalories conversion table
| Calories (cal) | Kilocalories (kcal) |
|---|---|
| 1 | 0.001 |
| 10 | 0.01 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1,000 | 1 |
| 2,000 | 2 |
| 5,000 | 5 |
FAQ
What is 1 cal in kcal?
1 cal = 0.001 kcal. To convert any amount, multiply the number of calories by 0.001.
How do I convert kilocalories back to calories?
Go the other way: 1 kcal = 1,000 cal, so multiply kilocalories by 1,000 to get calories.
Is a calorie bigger than a kilocalorie?
No — 1 cal is the smaller unit, equal to 0.001 kcal (it takes 1,000 cal to make one kcal).
Are these energy conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.