Centimeter to Millimeter Converter
Quick answer
To convert Centimeters to Millimeters, multiply by 10 (or divide by 0.1). Therefore, 1 Centimeter (cm) equals 10 Millimeters (mm).
Formula: mm = cm × 10. Worked example: 10 cm = 100 mm.
Convert Centimeter (cm) to Millimeter (mm) online with our free unit converter. In length, 1 cm = 10 mm. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Centimeter to Millimeter
- Step 1 — start with the formula. mm = cm × 10
- Step 2 — substitute your figure. 10 cm × 10
- Step 3 — read the result. 10 cm = 100 mm
- Step 4 — check it in reverse. cm = mm × 0.1 returns 10 cm, which matches the figure you started with.
Length Converter
31 units available
1 cm = 10 mm
Formula:
mm = cm × 10With your value: 1 cm = 10 mm
How big is that?
Everyday references on a logarithmic scale, all expressed in centimeter so you can sanity-check the result.
Other Centimeter to Millimeter conversions
Centimeter to Millimeter Conversion Table
| Centimeter (cm) | Millimeter (mm) |
|---|---|
| 0.5 | 5 |
| 1 | 10 |
| 2 | 20 |
| 5 | 50 |
| 10 | 100 |
| 15 | 150 |
| 20 | 200 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1,000 |
| 250 | 2,500 |
| 500 | 5,000 |
| 1000 | 10,000 |
Millimeter to Centimeter Conversion Table
| Millimeter (mm) | Centimeter (cm) |
|---|---|
| 0.5 | 0.05 |
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 15 | 1.5 |
| 20 | 2 |
| 25 | 2.5 |
| 50 | 5 |
| 100 | 10 |
| 250 | 25 |
| 500 | 50 |
| 1000 | 100 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Centimeter (cm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Millimeter (mm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Centimeter to Millimeter
To convert from Centimeter (cm) to Millimeter (mm), multiply the value by 10.
Formula: mm = cm × 10
Reverse: cm = mm × 0.1
Step-by-Step Example
- Start with your value in Centimeter. For example: 5 cm
- Multiply by the conversion factor: 5 x 10
- The result is: 50 mm
Centimeter and Millimeter Relationship
Both Centimeter and Millimeter belong to the Metric (SI) system, making this an intra-system conversion within length. Since 1 Centimeter equals approximately 10 Millimeters, the Centimeter represents a larger unit interval than the Millimeter. Understanding the relationship between Centimeter and Millimeter is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Centimeter
The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.
Common uses of Centimeter: body measurements, clothing, furniture.
About Millimeter
The millimeter equals one thousandth of a meter and is used for precise measurements in engineering and manufacturing.
Common uses of Millimeter: engineering, rainfall measurement, manufacturing.
Frequently Asked Questions
- How many Millimeters are in 1 Centimeter?
- There are exactly 10 Millimeters in 1 Centimeter. This means the conversion factor from Centimeter to Millimeter is 10.
- What is the formula to convert Centimeter to Millimeter?
- The formula to convert Centimeter to Millimeter is: mm = cm × 10. For example, to convert 10 Centimeters to Millimeters, you would multiply 10 by 10.
- What is a Centimeter?
- The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.
- What is a Millimeter?
- The millimeter equals one thousandth of a meter and is used for precise measurements in engineering and manufacturing.
- What are the common uses of Centimeter?
- The Centimeter is commonly used in body measurements, clothing, furniture.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Centimeter to Millimeter converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/centimeter-to-millimeter