Calories (cal) to kilocalories (kcal), energy conversion calculator and how to convert.
Calories to kcal conversion calculator
Select calorie unit type, enter the energy in calories and press the Convert button:
kcal to calories conversion calculator ►
Small & large calories
Small calorie (cal) is the energy needed to increase 1 gram of water by 1°C at a pressure of 1 atmosphere.
Large calorie (Cal) is the energy needed to increase 1 kg of water by 1°C at a pressure of 1 atmosphere.
Large calorie is also called food calorie and is used as a unit of food energy.
How to convert calories to kcal
cal to kcal - small calories to small kilocalories
1 kcal = 1000 cal
The energy in small kilocalories (kcal) is equal to the energy in small calories (cal) divided by 1000:
E(kcal) = E(cal) / 1000
Example
Convert 6000cal to small kcal:
E(kcal) = 6000cal / 1000 = 6 kcal
Cal to kcal - large calories to small kilocalories
1 kcal = 1 Cal
The energy in small kilocalories (kcal) is equal to the energy in large calories (Cal):
E(kcal) = E(Cal)
Example
Convert 6Cal to kcal:
E(kcal) = 6Cal = 6kcal