Convert kilocalories to calories
Converting kilocalories to calories is a common energy task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 kcal equals 1,000 cal, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert kilocalories to calories
To convert kilocalories to calories, multiply the number of kilocalories by 1,000. For example, 10 kcal × 1,000 = 10,000 cal.
cal = kcal × 1,000
- Write down the value in kilocalories you want to convert.
- Multiply it by 1,000 (the exact kcal→cal factor).
- The result is your value in calories. Check it below with the converter or the table.
Conversion table
Common values of kilocalories and their equivalents in calories:
| kcal | cal |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
About these units
Kilocalorie (kcal). A kilocalorie equals 1,000 small calories and is the 'Calorie' seen on food labels. An adult needs roughly 2,000–2,500 kcal per day, depending on activity.
Calorie (cal). The small calorie is the energy needed to raise one gram of water by 1 °C, defined as exactly 4.184 joules. It is mostly used in chemistry and heat calculations.
Frequently asked questions
How do I convert kilocalories to calories?
To convert kilocalories to calories, multiply the number of kilocalories by 1,000. For example, 10 kcal × 1,000 = 10,000 cal. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many calories are in 1 kilocalorie?
1 kcal = 1,000 cal. That is the fixed relationship used by this converter and by international standards.
How many kilocalories are in 1 calorie?
1 cal = 0.001 kcal. If you are converting in the opposite direction, use our Calorie to Kilocalorie converter for the dedicated table and FAQ.
Is the kilocalories to calories conversion exact?
Yes. Both units are defined by international agreement, so the factor of 1,000 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is kilocalorie used for?
A kilocalorie equals 1,000 small calories and is the 'Calorie' seen on food labels. An adult needs roughly 2,000–2,500 kcal per day, depending on activity.