# Kilocalories to joules conversion

Kilocalories to joules conversion is the process of converting energy values from kilocalories (kcal) to joules (J). To convert kilocalories to joules, you need to multiply the value in kilocalories by 4184.

## What is Kilocalories to joules conversion

To convert kilocalories (kcal) to joules (J), you can use the conversion factor 4184.

Joules = Kilocalories * 4184

For example, let's convert 100 kilocalories to joules:

Joules = 100 kcal * 4184 Joules = 418,400 J

Therefore, 100 kilocalories is equal to 418,400 joules.

## How to convert from kcal to joules

### Thermochemical / food kilocalories to joules

1 kcal_{th} = 4184 J

The energy in joules *E*_{(J)} is equal to 4184 times the energy in thermochemical / food kilocalories *E*_{(kcal)}:

*E*_{(J)} = 4184* × E*_{(kcal-th)}

### Example

Convert 0.3 kcal_{th} to joules.

*E*_{(J)} = 4184 × 0.3 kcal_{th} = 1255.2 J

### International kilocalories to joules

1 kcal_{IT} = 4186.8 J

The energy in joules *E*_{(J)} is equal to 4186.8 times the energy in international kilocalories *E*_{(kcal-IT)}:

*E*_{(J)} = 4186.8* × E*_{(kcal-IT)}

### Example

Convert 0.3 kcal_{IT} to joules.

*E*_{(J)} = 4186.8 *× *0.3kcal_{IT} = 1256.04 J

### 15°C kilocalories to joules

1 kcal_{15} = 4185.5 J

The energy in joules *E*_{(J)} is equal to 4185.5 times the energy in 15°C kilocalories *E*_{(kcal15)}:

*E*_{(J)} = 4185.5* × E*_{(kcal15)}

### Example

Convert 0.3 kcal_{15} to joules.

*E*_{(J)} = 4185.5 *× *0.3kcal_{15} = 1255.65 J

### 20°C kilocalories to joules

1 kcal_{20} = 4182 J

The energy in joules *E*_{(J)} is equal to 4182 times the energy in 20°C kilocalories *E*_{(kcal20)}:

*E*_{(J)} = 4182* × E*_{(kcal20)}

### Example

Convert 0.3 kcal_{20} to joules.

*E*_{(J)} = 4182 *× *0.3kcal_{20} = 1254.6 J