# Kilocalories to joules free online conversion

Kilocalories (kcal) to joules (J), energy conversion calculator and how to convert.

## kcal to joules conversion calculator

Enter the energy in calories and press the Convert button:

kcal-th
J

Joules to kcal conversion »

## How to convert from kcal to joules

### Thermochemical / food kilocalories to joules

1 kcalth = 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 kcalth to joules.

E(J) = 4184 × 0.3 kcalth = 1255.2 J

### International kilocalories to joules

1 kcalIT = 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 kcalIT to joules.

E(J) = 4186.8 × 0.3kcalIT = 1256.04 J

### 15°C kilocalories to joules

1 kcal15 = 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 kcal15 to joules.

E(J) = 4185.5 × 0.3kcal15 = 1255.65 J

### 20°C kilocalories to joules

1 kcal20 = 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 kcal20 to joules.

E(J) = 4182 × 0.3kcal20 = 1254.6 J

Joules to kcal conversion »

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