## Calories to Joules conversion

Calories (cal) to joules (J), energy conversion calculator and how to convert.

## Calories to joules conversion calculator

Select calorie unit type, enter the energy in calories and press the

Convertbutton:Joules to calories conversion ►

## Small & large calories

Small calorie(cal) is the energy needed to increase 1 gram of water by 1ºC at a pressure of 1 atmosphere.

Large calorie(Cal) is the energy needed to increase 1 kg of water by 1ºC at a pressure of 1 atmosphere.

Large calorieis also calledfood calorieand is used as a unit of food energy.## How to convert from calories to joules

## Thermochemical calories to joules

1 cal

_{th}= 4.184 JThe energy in joules

E_{(J)}is equal to 4.184 times the energy in thermochemical caloriesE_{(calth)}:

E_{(J)}= 4.184× E_{(calth)}## Example

Convert 300 cal

_{th}to joules.

E_{(J)}= 4.184×300cal_{th}= 1255.2 J## 15ºC calories to joules

1 cal

_{15}= 4.1855 JThe energy in joules

E_{(J)}is equal to 4.1855 times the energy in 15ºC caloriesE_{(cal15)}:

E_{(J)}= 4.1855× E_{(cal15)}## Example

Convert 300 cal

_{15}to joules.

E_{(J)}= 4.1855×300cal_{15}= 1255.65 J## Large/food calories to joules

1 Cal = 4.184 kJ = 4184 J

The energy in joules

E_{(J)}is equal to 4184 times the energy in large/food caloriesE_{(Cal)}:

E_{(J)}= 4184× E_{(Cal)}## Example

Convert 0.3 Cal to joules.

E_{(J)}= 4184×0.3 Cal = 1255.2 J

Joules to calories conversion ►

## See also