Kilocalories to Calories Converter
One Kilocalorie equals 1000 Calories (1 kcal = 1000 cal). Multiply a Kilocalorie value by 1000 to get the equivalent in Calories. The calculator is above; the formula and worked examples are below.
Formula
cal = kcal × 1000
Multiply the Kilocalorie value by 1000 to get the equivalent value in Calories.
Example Conversions
1 Kilocalorie (kcal)
1000 Calorie (cal)
5 Kilocalorie (kcal)
5000 Calorie (cal)
10 Kilocalorie (kcal)
10000 Calorie (cal)
25 Kilocalorie (kcal)
25000 Calorie (cal)
100 Kilocalorie (kcal)
100000 Calorie (cal)
Conversion Table
| Kilocalorie (kcal) | Calorie (cal) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
How to Convert Manually
Use these steps to convert Kilocalorie values to Calorie without the calculator.
- Write down the value in Kilocalorie (kcal) that you want to convert.
- Multiply that value by 1000.
- For example, 10 Kilocalories × 1000 = 10000 Calories.
- Label the result as Calorie (cal).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilocalorie and one Calorie.
About Kilocalorie and Calorie
The kilocalorie is 4,184 joules. It is the food 'Calorie' (capital C) on US nutrition labels. Diet tracking and exercise burn estimates use kilocalories. The calorie (small calorie) is exactly 4.184 joules under the thermochemical convention. It originally described the heat to warm one gram of water by 1 °C. Chemistry uses it; food 'Calories' are actually kilocalories. One Kilocalorie equals 1000 Calories (1 kcal = 1000 cal). Kilocalorie is used in nutrition labels and diet tracking and in exercise calorie burn. Calorie is used in chemistry heat calculations.
Precision and Rounding:Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Kilocalories equals15000Calories.
15 kcal × 1000 = 15000 cal
FAQ
How do I convert Kilocalorie to Calorie?
Multiply the Kilocalorie value by 1000 to get the equivalent value in Calories.
What is the formula for Kilocalorie to Calorie?
The formula is cal = kcal × 1000.
How many Calories are in 1 Kilocalorie?
1 Kilocalorie equals 1000 Calories.
Can I convert Calorie back to Kilocalorie?
Yes. 1 Calorie equals 0.001 Kilocalories, and the related converter can reverse the calculation.
What are common names for Kilocalorie and Calorie?
Kilocalorie is shown as kcal and may also be searched as kilocalorie, kilocalories, food calorie. Calorie is shown as cal and may also be searched as calorie, calories, small calorie.
Was this page helpful?
Let us know if this converter met your needs.