cal to kcal Converter - Calorie to Kilocalorie

Calorie (cal) to Kilocalorie (kcal)

Direct answer

1 cal = 0.001 kcal

kcal = cal × 0.001

Converter

Input

cal

Result

0.001kcal

kcal = cal × 0.001

cal = kcal × 1,000

Example: 10 cal = 10 × 0.001 = 0.01 kcal.

Express both cal and kcal 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 kcal in the base unit
$1 kcal = 4, 184 J$
3
Forward conversion
$1 cal = \frac{4.184 J}{4 , 184 J} \times 1 kcal = \frac{4.184}{4 , 184} kcal = 0.001 kcal$
4
Reverse conversion
$1 kcal = \frac{4 , 184 J}{4.184 J} \times 1 cal = \frac{4 , 184}{4.184} cal = 1, 000 cal$

A guarded explanation for this pair page covering definition, principle, assumptions, and cautions.

Guarded output

AI text is for interpretation only. The page calculator remains the source of truth for numeric results.

1 cal = 0.001 kcal.

10 cal = 0.01 kcal.

100 cal = 0.1 kcal.

Use kcal = cal × 0.001.

1 kcal = 1,000 cal.

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