Convert cm to mm
Centimeters to millimeters. Enter a value to convert, or use the cm to mm chart further down the page.
1 centimeter equals 10 millimeters. Going the other way, 1 millimeter = 0.1 centimeters.
How to convert cm to mm
To convert centimeters to millimeters, multiply the centimeter value by 10. You can also divide by 0.1 to get the same answer.
mm = cm × 10
Worked example
Convert 15 cm to millimeters:
15 cm = 150 mm
cm to mm conversion chart
Use this cm to mm table for quick reference without typing anything.
| centimeters (cm) | millimeters (mm) |
|---|---|
| 0.01 cm | 0.1 mm |
| 0.1 cm | 1 mm |
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 20 cm | 200 mm |
| 50 cm | 500 mm |
| 100 cm | 1,000 mm |
| 1,000 cm | 10,000 mm |
What is a centimeter?
The centimeter is one hundredth of a meter. It is the unit most people reach for when measuring body height, clothing, paper and everyday objects in metric countries.
What is a millimeter?
The millimeter is a metric unit equal to one thousandth of a meter. It is the smallest unit marked on a standard metric ruler and is the working unit of engineering drawings, machining tolerances and rainfall measurement.
Frequently asked questions
How many mm are in a centimeter?
1 cm equals 10 mm. Going the other way, 1 mm is 0.1 cm.
How do you convert cm to mm?
To convert centimeters to millimeters, multiply the centimeter value by 10. You can also divide by 0.1 to get the same answer.
What is 10 cm in mm?
10 cm equals 100 mm. The conversion chart on this page lists the other values people look up most often.
Related length conversions
Convert cm to other units
- mm to cm
- cm to meters
- cm to km
- cm to inches
- cm to feet
- cm to yards
- cm to miles
- cm to micrometers
- cm to nanometers
Convert other units to mm
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