# How to convert kcal to calories

How to convert kilocalories (kcal) to calories (cal).

### 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.

### kcal to Cal - small kilocalories to large calories

One large food calorie is equal to 1 small kcal:

1 Cal = 1 kcal

The energy in large calories (Cal) is equal to the energy in small kilocalories (kcal):

E(Cal) = E(kcal)

##### Example

Convert 6 kcal to large calories:

E(Cal) = 6 kcal = 6 Cal

### kcal to cal - small kilocalories to small calories

1 kcal = 1000 cal

The energy in small calories (cal) is equal to 1000 times the energy in small kilocalories (kcal):

E(cal) = 1000 × E(kcal)

##### Example

Convert 6 kcal to small calories:

E(cal) = 1000 × 6kcal = 6000 cal

How to convert calories to kcal ►