Simply enter the energy in kilocalories, select the desired calorie unit type, and click “Convert” to obtain the energy result in kilojoules. 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 kJ Conversion Calculator
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How to Convert kcal to kJ?
Thermochemical / Food Kilocalories to Kilojoules
1 kcalth = 4,184 kJ
The amount of energy expressed in kilojoules E(kJ) can be calculated by multiplying the energy measured in thermochecmical or food kilocalories E(kcal-th) by a factor of 4,184:
E(kJ) = 4,184 × E(kcal-th)
Example
Convert 5 kcalth to kilojoules.
E(kJ) = 4.184 × 5 kcalth = 20.92 kJ
International Kilocalories to Kilojoules
1 kcalIT = 4,1868 kJ
The amount of energy measured in kilojoules E(kJ) can be calculated by multiplying the energy measured in international kilocalories E(kcal-IT) by a factor of 4.1868:
E(kJ) = 4.1868 × E(kcal-IT)
Example
Convert 7 kcalIT to kilojoules.
E(kJ) = 4.1868 × 7 kcalIT = 29.3076 kJ
15°C Kilocalories to Kilojoules
1 kcal15 = 4,1855 kJ
The amount of energy measured in kilojoules E(kJ) can be calculated by multiplying the energy measured in 15°C kilocalories E(kcal15) by a factor of 4.1855:
E(kJ) = 4.1855 × E(kcal15)
Example
Convert 10 kcal15 to kilojoules.
E(kJ) = 4.1855 × 10 kcal15 = 41.855 kJ
20°C Kilocalories to Kilojoules
1 cal20 = 4,182 kJ
The amount of energy, measured in kilojoules E(kJ), is equivalent to 4,182 times the energy measured in kilocalories at 20°C E(kcal20):
E(kJ) = 4,182 × E(kcal20)
Example
Convert 0,5 kcal20 to kilojoules.
E(kJ) = 4,182 × 0,5 kcal20 = 2.091 kJ
kcal to kJ Conversion Table
| Kilocalories | Kilojoules |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.55 kJ |
| 4 kcal | 16.74 kJ |
| 4.71 kcal | 19.70664 kJ |
| 5 kcal | 20.92 kJ |
| 6 kcal | 25.1 kJ |
| 7 kcal | 29.29 kJ |
| 8 kcal | 33.47 kJ |
| 9 kcal | 37.66 kJ |
| 10 kcal | 41.84 kJ |
| 11 kcal | 46.02 kJ |
| 12 kcal | 50.21 kJ |
| 13 kcal | 54.39 kJ |
| 14 kcal | 58.58 kJ |
| 15 kcal | 62.76 kJ |
| 16 kcal | 66.94 kJ |
| 17 kcal | 71.13 kJ |
| 18 kcal | 75.31 kJ |
| 19 kcal | 79.5 kJ |
| 20 kcal | 83.68 kJ |
| 21 kcal | 87.86 kJ |
| 22 kcal | 92.05 kJ |
| 23 kcal | 96.23 kJ |
| 24 kcal | 100.42 kJ |
| 25 kcal | 104.6 kJ |
| 26 kcal | 108.78 kJ |
| 27 kcal | 112.97 kJ |
| 28 kcal | 117.15 kJ |
| 29 kcal | 121.34 kJ |
| 30 kcal | 125.52 kJ |
| 31 kcal | 129.7 kJ |
| 32 kcal | 133.89 kJ |
| 33 kcal | 138.07 kJ |
| 34 kcal | 142.26 kJ |
| 35 kcal | 146.44 kJ |
| 36 kcal | 150.62 kJ |
| 37 kcal | 154.81 kJ |
| 38 kcal | 158.99 kJ |
| 39 kcal | 163.18 kJ |
| 40 kcal | 167.36 kJ |
| 45 kcal | 188.28 kJ |
| 75 kcal | 313.8 kJ |
| 110 kcal | 460.24 kJ |
| 220 kcal | 920.48 kJ |
| 225 kcal | 941.4 kJ |
| 240 kcal | 1004.16 kJ |
