Millimeter to Centimeter Converter
One Millimeter equals 0.1 Centimeter (1 mm = 0.1 cm). Multiply a Millimeter value by 0.1 to get the equivalent in Centimeter. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
cm = mm × 0.1
Multiply the Millimeter value by 0.1 to get the equivalent value in Centimeter.
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 Millimeter × 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 Centimeter (1 mm = 0.1 cm). Millimeter to Centimeter conversion comes up most often in engineering and CAD drawings and in manufacturing tolerances, typically when figures need restating for 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
15 Millimeter equals 1.5 Centimeter.
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 Centimeter.
What is the formula for Millimeter to Centimeter?
The formula is cm = mm × 0.1.
How many Centimeter are in 1 Millimeter?
1 Millimeter equals 0.1 Centimeter.
Can I convert Centimeter back to Millimeter?
Yes. 1 Centimeter equals 10 Millimeter, 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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