cal to kJ Converter - Calorie to Kilojoule

Calorie (cal) to Kilojoule (kJ)

Direct answer

1 cal = 0.004184 kJ

kJ = cal × 0.004184

Converter

Input

cal

Result

0.004184kJ

kJ = cal × 0.004184

cal = kJ × 239.005736138

Example: 10 cal = 10 × 0.004184 = 0.04184 kJ.

Express both cal and kJ in the same base unit J (joule), then cancel the shared base unit.

1
Rewrite cal in the base unit
$1 cal = 4.184 J$
2
Rewrite kJ in the base unit
$1 kJ = 1, 000 J$
3
Forward conversion
$1 cal = \frac{4.184 J}{1 , 000 J} \times 1 kJ = \frac{4.184}{1 , 000} kJ = 0.004184 kJ$
4
Reverse conversion
$1 kJ = \frac{1 , 000 J}{4.184 J} \times 1 cal = \frac{1 , 000}{4.184} cal = 239.005736138 cal$

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Guarded output

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1 cal = 0.004184 kJ.

10 cal = 0.04184 kJ.

100 cal = 0.4184 kJ.

Use kJ = cal × 0.004184.

1 kJ = 239.005736138 cal.

Use the conversion factor and round the result to the precision required by your calculation.