Convert Centimeters to millimeters
1 centimeter = 10 millimeters · mm = cm × 10
When you need this conversion
This conversion goes from centimeters, the everyday metric unit for body measurements, clothing, and product dimensions, to millimeters, the metric unit used for hardware, engineering drawings, and anything needing sub-centimeter precision. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Centimeters to millimeters conversion table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 15 cm | 150 mm |
| 20 cm | 200 mm |
| 25 cm | 250 mm |
| 50 cm | 500 mm |
| 75 cm | 750 mm |
| 100 cm | 1,000 mm |
| 250 cm | 2,500 mm |
| 500 cm | 5,000 mm |
| 1,000 cm | 10,000 mm |
The formula
mm = cm × 10Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Millimeters to centimeters →Related length conversions
- Centimeters to inches
- Centimeters to feet
- Micrometers to millimeters
- Millimeters to micrometers
- Meters to kilometers
- Kilometers to meters
- Inches to centimeters
- Feet to centimeters
- Feet to yards
- Yards to feet
- Centimeters to meters
- Centimeters to kilometers
Frequently asked questions
- How many millimeters are in a centimeter?
- There are 10 millimeters in 1 centimeter. The formula is mm = cm × 10.
- How do you convert centimeters to millimeters?
- Use the formula mm = cm × 10. For example, 10 centimeters equals 100 millimeters.
- Is the centimeters to millimeters conversion exact?
- Yes. Centimeters and millimeters are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
- What is cm short for?
- cm is the standard symbol for centimeter (also written as centimetres). mm is the symbol for millimeter.