## Centimeters-inches converter

Enter the length in either of the next two fields and get it converted instantly from cm to inches or the opposite, from inches to cm. The inches are printed both in decimal and fraction form.

Centimeters [cm]: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Inches [in]: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Fraction [in]: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

### Conversion Formulas

1 inch = 2.54 cm

1 cm ≈ 0.3937 inches ≈ 25/64 inches

## Definitions

### Unit of centimeter

Centimeter or centimetre [cm] is a unit of length from the SI system of units. It is defined as one hundredth (1/100) of the meter. The meter [m], is the base unit of length in SI system, defined as the distance traveled by light in vacuum in \(\frac{1}{299\,792\,458}\) seconds.

Besides [cm], other multiple and fraction units of the metre are defined through the decimal SI prefixes, as shown in the table:

Unit | Symbol | [m] |
---|---|---|

Nanometer | nm | 10^{-9} |

Micrometer | μm | 10^{-6} |

Millimeter | mm | 0.001 |

Centimeter | cm | 0.01 |

Hectometer | hm | 100 |

Kilometer | km | 1000 |

Megameter | Mm | 10^{6} |

### Unit of inch

Inch [in] is a unit of length for the Imperial and US customary system of units. It was historically conceived as the length of 3 barley-corns. Today, it is defined through the meter SI unit as: 1 in = 0.0254 m (= 2.54 cm = 25.4 mm).

Multiple units of the inch are defined as shown in the table:

Unit | Symbol | [in] |
---|---|---|

Foot | ft | 12 |

Yard | yd | 36 |

Mile | mi | 63360 |

### How to convert inches to cm

- Multiply distance in [in] with 2.54
- The result is the distance in cm

For example to convert 20 inches to cm: \(20\times 2.54 = 50.8\) cm

### How to convert cm to inches

- Divide distance in [cm] by 2.54
- The result is the distance in inches

For example to convert 50 cm to inches: \(50/ 2.54 \approx 19.7\) inches

### Conversion table from cm to inches

In the following table some typical distances in centimeters are converted to inches:

[cm] | [in] |
---|---|

0.1 | |

0.25 | |

0.5 | |

0.75 | |

1 | |

2 | |

3 | |

5 | |

10 | |

12 | |

20 | |

30 | |

40 | |

50 |

### Conversion table from inches to cm

In the following table some typical distances in inches are converted to centimeters:

[in] | [cm] |
---|---|

0.125 | |

0.25 | |

0.375 | |

0.5 | |

1 | |

2 | |

3 | |

5 | |

10 | |

12 | |

20 | |

30 | |

50 |