cm to mm Converter

Convert centimeters to millimeters and vice versa with instant bidirectional conversion

Length Conversion Calculator

cm

1 centimeter = 10 millimeters

mm

1 millimeter = 0.1 centimeters

Conversion Results

0.000 cm
Centimeters
0.0 mm
Millimeters

Conversion Formula: mm = cm × 10

Calculation: 0 cm × 10 = 0 mm

Unit Relationship: 1 centimeter equals 10 millimeters

Quick Conversions

Example Calculations

Converting 1.5 cm to mm

Given: 1.5 centimeters

Formula: mm = cm × 10

Calculation: 1.5 cm × 10 = 15 mm

Result: 1.5 cm = 15 mm

Converting 90 mm to cm

Given: 90 millimeters

Formula: cm = mm ÷ 10

Calculation: 90 mm ÷ 10 = 9 cm

Result: 90 mm = 9 cm

Common Conversions

1 cm10 mm
2.5 cm25 mm
5 cm50 mm
10 cm100 mm
15 cm150 mm
30 cm300 mm

Unit Information

Centimeter (cm)

A metric unit of length equal to one hundredth of a meter (10⁻² m)

Millimeter (mm)

A metric unit of length equal to one thousandth of a meter (10⁻³ m)

Conversion Tips

To convert cm to mm: multiply by 10

To convert mm to cm: divide by 10

Both units are part of the metric system

Millimeters provide higher precision for small measurements

Understanding Centimeter to Millimeter Conversion

What are Centimeters and Millimeters?

Centimeters and millimeters are metric measurement units for length, both being submultiples of the meter. The centimeter equals one hundredth of a meter (10⁻² m), while the millimeter equals one thousandth of a meter (10⁻³m).

The Conversion Relationship

The relationship between centimeters and millimeters is straightforward: 1 centimeter equals exactly 10 millimeters. This makes conversion between these units simple and precise.

Conversion Formulas

cm to mm: mm = cm × 10

mm to cm: cm = mm ÷ 10

Practical Applications

  • Engineering and technical drawings
  • Medical measurements and dosages
  • Manufacturing and quality control
  • Scientific research and experimentation