Kilojoules to calories conversion

Kilojoules (kJ) to calories (cal), energy conversion calculator and how to convert.

Kilojoules to calories conversion calculator

Enter the energy in kilojoules, select calorie unit type and press the Convert button:

kJ
Select calorie unit type:  
   
Energy result in calories:

Calories to kJ 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 calorie is also called food calorie and is used as a unit of food energy.

How to convert from kilojoules to calories

kJ to thermochemical calories

1 calth = 0.004184 kJ

1 kJ = 239.0057 calth

The energy in thermochemical calories E(calth) is equal to the energy in kilojoules E(kJ) times 239.0057:

E(cal) = E(kJ) × 239.0057

Example

Convert 0.6 kilojoules to thermochemical calories.

E(cal) = 0.6kJ × 239.0057 = 143.4 calth

kJ to 15ºC calories

1 cal15 = 0.0041855 kJ

1 kJ = 238.9201 cal15

The energy in 15ºC calories E(cal15) is equal to the energy in kilojoules E(kJ) times 238.9201:

E(cal15) = E(kJ) × 238.9201

Example

Convert 0.6 kilojoules to 15ºC calories.

E(cal15) = 0.6kJ × 238.9201 = 143.352 cal15

kJ to large/food calories

1 Cal = 4.184 kJ

1 kJ = 0.239 Cal

The energy in large/food calories E(Cal) is equal to the energy in kilojoules E(kJ) times 0.239:

E(Cal) = E(kJ) × 0.239

Example

Convert 0.6 kilojoules to food calories.

E(Cal) = 0.6kJ × 0.239 = 0.1434 Cal

 

Calories to kJ conversion ►

 


See also

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