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

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

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

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

*Large calorie* is also called *food calorie* and is used as a unit of food energy.

1 cal_{th} = 0.004184 kJ

1 kJ = 239.0057 cal_{th}

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

Convert 0.6 kilojoules to thermochemical calories.

*E*_{(cal)} = 0.6kJ × 239.0057 = 143.4 cal_{th}

1 cal_{15} = 0.0041855 kJ

1 kJ = 238.9201 cal_{15}

The energy in 15°C calories *E*_{(cal15)} is equal to the energy in kilojoules *E*_{(kJ)} times 238.9201:

*E*_{(cal15)} = *E*_{(kJ)} × 238.9201

Convert 0.6 kilojoules to 15°C calories.

*E*_{(cal15)} = 0.6kJ × 238.9201 = 143.352 cal_{15}

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

Convert 0.6 kilojoules to food calories.

*E*_{(Cal)} = 0.6kJ × 0.239 = 0.1434 Cal

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