Kilocalorie to Calorie Converter
One Kilocalorie equals 1000 Calorie (1 kcal = 1000 cal). Multiply a Kilocalorie value by 1000 to get the equivalent in Calorie. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
cal = kcal × 1000
Multiply the Kilocalorie value by 1000 to get the equivalent value in Calorie.
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 Kilocalorie × 1000 = 10000 Calorie.
- 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 — 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 — the thermochemical convention, originally the heat to warm one gram of water by 1 °C. Chemistry uses it; food 'Calories' are actually kilocalories. One Kilocalorie equals 1000 Calorie (1 kcal = 1000 cal). Kilocalorie to Calorie conversion comes up most often in nutrition labels and diet tracking and in exercise calorie burn, typically when figures need restating for 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
15 Kilocalorie equals 15000 Calorie.
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 Calorie.
What is the formula for Kilocalorie to Calorie?
The formula is cal = kcal × 1000.
How many Calorie are in 1 Kilocalorie?
1 Kilocalorie equals 1000 Calorie.
Can I convert Calorie back to Kilocalorie?
Yes. 1 Calorie equals 0.001 Kilocalorie, 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.
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