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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