How many kilocalories are in one calorie?
One small calorie equals 0.001 kilocalories.
Convert Calorie (cal) to Kilocalorie (kcal) instantly.
Calculation
value × 0.001
| Quick Conversion | Converted |
|---|---|
| 1 cal | 0.001 kcal |
| 5 cal | 0.005 kcal |
| 10 cal | 0.01 kcal |
| 100 cal | 0.1 kcal |
| 1,000 cal | 1 kcal |
A small calorie is a heat-energy unit equal to one thousandth of a kilocalorie.
The calorie was historically used in heat measurement, with kilocalories later becoming common for larger energy quantities.
Small calories are used in chemistry, thermodynamics examples, older tables, and detailed heat-energy calculations.
A kilocalorie is an energy unit equal to 1000 small calories or 4184 joules.
Kilocalories became widely recognized through nutrition science and food-energy reporting.
kcal is used in food labels, diet tracking, exercise estimates, meal planning, and larger thermal energy summaries.
Mathematically, kilocalorie (kcal) = calorie (cal) converted with the formula below.
1 cal = 0.001 kcal
1 kcal = 1,000 cal
Formula: value × 0.001
Example: 15 cal = 0.015 kcal
Precision note: Use the exact scale relationship: 1000 cal = 1 kcal. Always verify whether the source means small calories or food Calories.
1 cal = 0.001 kcal
1 kcal = 1,000 cal
| Calorie [cal] | Kilocalorie [kcal] |
|---|---|
| 0.01 cal | 0.00001 kcal |
| 0.1 cal | 0.0001 kcal |
| 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 |
One small calorie equals 0.001 kilocalories.
One kilocalorie equals 1000 small calories.
In common nutrition use, yes. One food Calorie is one kilocalorie.