---
title: "Centimeters to Inches — cm to in converter"
description: "1 centimeter = 0.3937 inches. Convert centimeters to inches with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/cm-to-inches/
site: "At One Place"
---

# Centimeters to inches

**1 centimeter in inches: 1 cm = 0.3937 in**

in = cm × 0.3937007874

To convert centimeters to inches, multiply by 0.3937007874. The table below gives the values people look up most often, and the converter works for any number.

## Centimeters to inches table

*Common centimeter values converted to inches.*

| Centimeters | Inches |
| --- | --- |
| 1 cm | 0.3937 |
| 2 cm | 0.7874 |
| 3 cm | 1.181102 |
| 4 cm | 1.574803 |
| 5 cm | 1.968504 |
| 10 cm | 3.937008 |
| 15 cm | 5.905512 |
| 20 cm | 7.874016 |
| 25 cm | 9.84252 |
| 30 cm | 11.81102 |
| 40 cm | 15.74803 |
| 50 cm | 19.68504 |
| 75 cm | 29.52756 |
| 100 cm | 39.37008 |
| 250 cm | 98.4252 |
| 500 cm | 196.8504 |
| 1,000 cm | 393.7008 |

## How the conversion works

The relationship is in = cm × 0.3937007874. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many inches are in one centimeter?

One centimeter equals 0.3937 inches. in = cm × 0.3937007874.

### How do you convert centimeters to inches?

Use in = cm × 0.3937007874. So 10 cm is 3.937008 in.

### How many centimeters are in one inch?

One inch equals 2.54 centimeters, which is the reverse of the conversion above.

## Related pages

- [Inches to Centimeters](https://atoneplace.net/convert/inches-to-cm/)
- [Centimeters to Meters](https://atoneplace.net/convert/cm-to-meters/)
- [Centimeters to Kilometers](https://atoneplace.net/convert/cm-to-km/)
- [Centimeters to Millimeters](https://atoneplace.net/convert/cm-to-mm/)
- [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/)

## 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/)