What is a Centimeter?
A centimeter (cm) is one-hundredth of a meter, suitable for everyday measurement of furniture, rooms, and general product dimensions.
- 1 cm = 10 mm
- 100 cm = 1 m
- 2.54 cm = 1 inch
Free Measurement Tool
CM to MM Converter
Convert centimeters to millimeters instantly with the simple × 10 formula. Essential for precision drawings, hardware specifications, tile and material dimensions in construction projects.
Simple × 10 formulaInstant reverse conversionConversion chart included
Convert CM to MM
CentimetersMillimeters
1 cm equals10 mmFormula: mm = cm × 10
Convert Centimeters to Millimeters Instantly
Centimeters are used for general measurements while millimeters provide the precision needed for engineering details, hardware specs, and precision construction. The relation is exact: 1 cm = 10 mm.
CM to MM Conversion Formula
The formula is:
Millimeters = Centimeters × 10
Example: 15 cm × 10 = 150 mm. Reverse: divide mm by 10 to get cm.
CM to MM Conversion Table
Reference chart for common centimeter values in design, hardware, and tile specifications.
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 15 cm | 150 mm |
| 25 cm | 250 mm |
| 50 cm | 500 mm |
| 100 cm | 1000 mm |
What is a Millimeter?
A millimeter (mm) is one-thousandth of a meter, the precision unit for engineering drawings, hardware, and construction detail specifications.
- 10 mm = 1 cm
- 1000 mm = 1 m
- 25.4 mm = 1 inch
Why Use This CM to MM Converter?
Converting cm measurements to mm is essential when moving from general design to precision engineering or when ordering materials with mm-based tolerances.
- Convert tile and panel dimensions from cm to mm for precise installation.
- Match architectural plan dimensions in cm with engineering detail specs in mm.
- Verify hardware and fitting clearances with millimeter precision.
- Scale down material orders by converting cm measurements to millimeter specs.
Reverse Calculation: MM to CM
To convert millimeters to centimeters, divide by 10.
Centimeters = Millimeters ÷ 10
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 10 mm | 1 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 250 mm | 25 cm |
| 500 mm | 50 cm |
CM to MM FAQs
How many mm are in 1 cm?
1 centimeter equals exactly 10 millimeters. This is the fundamental metric scale relationship.
What is the formula to convert cm to mm?
Millimeters = Centimeters × 10. Simply multiply the centimeter value by 10.
How much is 5 cm in mm?
5 cm equals 50 mm (5 × 10 = 50).
How much is 25 cm in mm?
25 cm equals 250 mm — a common tile width or small panel dimension in construction.
Is this cm to mm converter accurate?
Yes. 1 cm = 10 mm is an exact metric definition, so there is no rounding error in this conversion.