---
title: "Centimeters to Millimeters — cm to mm converter"
description: "1 centimeter = 10 millimeters. Convert centimeters to millimeters with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/cm-to-mm/
site: "At One Place"
---

# Centimeters to millimeters

**1 centimeter in millimeters: 1 cm = 10 mm**

mm = cm × 10

To convert centimeters to millimeters, multiply by 10. The table below gives the values people look up most often, and the converter works for any number.

## Centimeters to millimeters table

*Common centimeter values converted to millimeters.*

| Centimeters | Millimeters |
| --- | --- |
| 1 cm | 10 |
| 2 cm | 20 |
| 3 cm | 30 |
| 4 cm | 40 |
| 5 cm | 50 |
| 10 cm | 100 |
| 15 cm | 150 |
| 20 cm | 200 |
| 25 cm | 250 |
| 30 cm | 300 |
| 40 cm | 400 |
| 50 cm | 500 |
| 75 cm | 750 |
| 100 cm | 1,000 |
| 250 cm | 2,500 |
| 500 cm | 5,000 |
| 1,000 cm | 10,000 |

## How the conversion works

The relationship is mm = cm × 10. Both units measure length, so the conversion is a fixed factor that never changes.

## Common questions

### How many millimeters are in one centimeter?

One centimeter equals 10 millimeters. mm = cm × 10.

### How do you convert centimeters to millimeters?

Use mm = cm × 10. So 10 cm is 100 mm.

### How many centimeters are in one millimeter?

One millimeter equals 0.1 centimeters, which is the reverse of the conversion above.

## Related pages

- [Millimeters to Centimeters](https://atoneplace.net/convert/mm-to-cm/)
- [Centimeters to Meters](https://atoneplace.net/convert/cm-to-meters/)
- [Centimeters to Kilometers](https://atoneplace.net/convert/cm-to-km/)
- [Centimeters to Miles](https://atoneplace.net/convert/cm-to-miles/)
- [Centimeters to Yards](https://atoneplace.net/convert/cm-to-yards/)
- [Centimeters to Feet](https://atoneplace.net/convert/cm-to-feet/)
- [Centimeters to Inches](https://atoneplace.net/convert/cm-to-inches/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)