Millimeters to Centimeters Converter
One Millimeter equals 0.1 Centimeters (1 mm = 0.1 cm). Multiply a Millimeter value by 0.1 to get the equivalent in Centimeters. Enter your value in the calculator above. The formula and examples below show how to calculate it by hand.
Formula
cm = mm × 0.1
Multiply the Millimeter value by 0.1 to get the equivalent value in Centimeters.
Example Conversions
1 Millimeter (mm)
0.1 Centimeter (cm)
5 Millimeter (mm)
0.5 Centimeter (cm)
10 Millimeter (mm)
1 Centimeter (cm)
25 Millimeter (mm)
2.5 Centimeter (cm)
100 Millimeter (mm)
10 Centimeter (cm)
Conversion Table
| Millimeter (mm) | Centimeter (cm) |
|---|---|
| 0.1 | 0.01 |
| 0.5 | 0.05 |
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 25 | 2.5 |
| 50 | 5 |
| 100 | 10 |
| 250 | 25 |
| 500 | 50 |
| 1000 | 100 |
How to Convert Manually
Use these steps to convert Millimeter values to Centimeter without the calculator.
- Write down the value in Millimeter (mm) that you want to convert.
- Multiply that value by 0.1.
- For example, 10 Millimeters × 0.1 = 1 Centimeter.
- Label the result as Centimeter (cm).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Millimeter and one Centimeter.
About Millimeter and Centimeter
The millimeter is one thousandth of a meter. Engineering and manufacturing drawings in metric countries are dimensioned almost exclusively in millimeters to avoid decimal points. The centimeter is one hundredth of a meter (10 millimeters). It is the everyday small-length unit in metric countries, used where inches would be used in the US. One Millimeter equals 0.1 Centimeters (1 mm = 0.1 cm). Millimeter is used in engineering and CAD drawings and in manufacturing tolerances. Centimeter is used in body height and clothing measurements.
Precision and Rounding:Length factors between metric and imperial units are exact by definition (1 ft = 0.3048 m since 1959), so any rounding error comes from display precision, not the factor. Two or three decimal places suit carpentry and DIY work; machining and surveying often require four or more.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Millimeters equals1.5Centimeters.
15 mm × 0.1 = 1.5 cm
FAQ
How do I convert Millimeter to Centimeter?
Multiply the Millimeter value by 0.1 to get the equivalent value in Centimeters.
What is the formula for Millimeter to Centimeter?
The formula is cm = mm × 0.1.
How many Centimeters are in 1 Millimeter?
1 Millimeter equals 0.1 Centimeters.
Can I convert Centimeter back to Millimeter?
Yes. 1 Centimeter equals 10 Millimeters, and the related converter can reverse the calculation.
What are common names for Millimeter and Centimeter?
Millimeter is shown as mm and may also be searched as millimetre, millimeters, millimetres. Centimeter is shown as cm and may also be searched as centimetre, centimeters, centimetres.
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