mm to cm Converter - Millimeter to Centimeter

Millimeter (mm) to Centimeter (cm)

Direct answer

1 mm = 0.1 cm

cm = mm × 0.1

Converter

Input

Result

0.1cm

cm = mm × 0.1

mm = cm × 10

Example: 10 mm = 10 × 0.1 = 1 cm.

Express both mm and cm in the same base unit m (meter), then cancel the shared base unit.

1
Rewrite mm in the base unit
$1 mm = 0.001 m$
2
Rewrite cm in the base unit
$1 cm = 0.01 m$
3
Forward conversion
$1 mm = \frac{0.001 m}{0.01 m} \times 1 cm = \frac{0.001}{0.01} cm = 0.1 cm$
4
Reverse conversion
$1 cm = \frac{0.01 m}{0.001 m} \times 1 mm = \frac{0.01}{0.001} mm = 10 mm$

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 mm = 0.1 cm.

10 mm = 1 cm.

100 mm = 10 cm.

Use cm = mm × 0.1.

1 cm = 10 mm.

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