Direct conversion
cm to mm Converter
Convert centimeter [cm] to millimeter [mm] instantly with formula, examples, chart, and FAQs.
cm to mm Converter
Instant results1 centimeter [cm] = 10 millimeter [mm]
Conversion Formula
1 centimeter [cm] = 10 millimeter [mm]
Example: 1 centimeter [cm] equals 10 millimeter [mm].
Examples
Practical Uses for cm to mm
Sources and Accuracy
Length conversions use the metre as the reference unit. Common imperial relationships are exact where standardized, such as 1 inch = 0.0254 metre and 1 foot = 0.3048 metre.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
How to Convert
- Enter the value in the “From value” field.
- Confirm the source unit is centimeter [cm].
- Confirm the target unit is millimeter [mm].
- Read the instant result and formula.
Where This Conversion Is Used
cm to mm Conversion Chart
Open full chart →| centimeter [cm] | millimeter [mm] |
|---|---|
| 1 | 10 |
| 2 | 20 |
| 5 | 50 |
| 10 | 100 |
| 20 | 200 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1000 |
| 1000 | 10000 |
Frequently Asked Questions
How do I convert centimeter to millimeter?
Use this formula: 1 centimeter [cm] = 10 millimeter [mm] Enter your value in the calculator and the result updates instantly.
How many millimeter are in 1 centimeter?
1 centimeter [cm] equals 10 millimeter [mm].
Can I reverse this conversion?
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.