Simply enter the energy in kilocalories, select the desired calorie unit type, and click “Convert” to obtain the energy result in joules. Use this tool to effortlessly convert between different calorie units for various applications. Click “Reset” to clear the fields and start a new conversion.
kcal to Joules Conversion Calculator
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How to Convert from kcal to Joules?
Thermochemical / Food Kilocalories to Joules
1 kcalth = 4184 J
The amount of energy expressed in joules E(J) is equivalent to 4184 multiplied by the energy measured in thermochemical or food kilocalories E(kcal):
E(J) = 4184 × E(kcal-th)
Example
Convert 0.7 kcalth to joules.
E(J) = 4184 × 0.7 kcalth = 2928.8 J
International Kilocalories to Joules
1 kcalIT = 4186.8 J
The amount of energy in joules E(J) can be calculated by multiplying the energy in international kilocalories E(kcal-IT) by 4186.8:
E(J) = 4186.8 × E(kcal-IT)
Example
Let’s say you have a food item that contains 200 international kilocalories. You want to convert this energy value into joules.
To convert kilocalories to joules, we can use the conversion factor: 1 kilocalorie = 4186.8 joules.
Now, let’s calculate the energy in joules:
Energy in kilocalories = 200 international kilocalories Conversion factor: 1 kilocalorie = 4186.8 joules
Energy in joules = 200 international kilocalories * 4186.8 joules/kilocalorie
Energy in joules = 837360 joules
Therefore, 200 international kilocalories is equivalent to 837360 joules.
15°C kilocalories to Joules
1 kcal15 = 4185.5 J
The amount of energy, measured in joules E(J), can be calculated by multiplying the energy in 15°C kilocalories E(kcal15) by a factor of 4185.5:
E(J) = 4185.5 × E(kcal15)
Example
Convert 0,5 kcal15 to joules.
E(J) = 4185.5 × 0,5kcal15 = 2092.75 J
20°C Kilocalories to Joules
1 kcal20 = 4182 J
The energy measured in joules E(J) is precisely 4182 times the energy measured in kilocalories at 20°C E(kcal20):
E(J) = 4182 × E(kcal20)
Example
Convert 0,8 kcal20 to joules.
E(J) = 4182 × 0.8kcal20 = 3345.6 J
