This length unit converter dynamically calculates a value you enter in **inches (in)** and converts it to its equivalent value in **centimeters (cm)**.

## How many inches (in) are in 1 centimeter (cm)?

There are **0.3937 inches (in)** in 1 **centimeter (cm)**. This means that one centimeter is equal to 0.3937 inches. Conversely, there are **2.54 centimeters (cm)** in **1 inch (in)**. This means that one inch is equal to 2.54 centimeters.

## What is the formula for how to convert inches (in) to centimeters (cm)?

The formula to convert inches (in) to centimeters (cm) is:

centimeters (cm) = inches (in) × 2.54

For example, to convert 5 inches to centimeters, we would use the following formula:

centimeters (cm) = 5 inches (in) × 2.54

So, 5 inches are equal to 12.7 centimeters.

## Inches (in) to centimeters (cm) conversion chart

Here is a conversion chart that shows common values of inches and their equivalent measurements in centimeters (rounded off to 2 decimal places):

Inches (in) | Centimeters (cm) |
---|---|

1 in | 2.54 cm |

2 in | 5.08 cm |

3 in | 7.62 cm |

4 in | 10.16 cm |

5 in | 12.70 cm |

6 in | 15.24 cm |

7 in | 17.78 cm |

8 in | 20.32 cm |

9 in | 22.86 cm |

10 in | 25.40 cm |

20 in | 50.80 cm |

30 in | 76.20 cm |

40 in | 101.60 cm |

50 in | 127.00 cm |

60 in | 152.40 cm |

70 in | 177.80 cm |

80 in | 203.20 cm |

90 in | 228.60 cm |

100 in | 254.00 cm |

This chart can be helpful when you need to quickly convert inch measurements to centimeters.

## Conversion of 1 inch (in) to other units of length

Converting 1 inch (in) to other common measurement units of length gives us the following results:

- 1 inch (in) = 25,400,000 nanometers (nm)
- 1 inch (in) = 25,400 microns (µm)
- 1 inch (in) = 254 millimeters (mm)
- 1 inch (in) = 2.54 centimeters (cm)
- 1 inch (in) = 0.254 decimeters (dm)
- 1 inch (in) = 0.0254 meters (m)
- 1 inch (in) = 0.0000254 kilometers (km)
- 1 inch (in) = 0.083333333 feet (ft)
- 1 inch (in) = 0.027777778 yards (yd)
- 1 inch (in) = 0.000015782828 miles (mi)
- 1 inch (in) = 0.000013714903 nautical miles (nmi)

## What is an inch (in)?

An inch (in) is a unit of length in the imperial and U.S. customary systems of measurement, which is a system of measurement that is based on the human body and everyday objects. One inch is defined as exactly 2.54 centimeters or one-twelfth of a foot.

The inch was first defined in the 13th century as a measure of the width of a thumb. It has been used in England since the 14th century and in the United States since the 18th century. The imperial and customary system is still used in the United States and some other countries, but it is being increasingly replaced by the metric system.

To provide a sense of scale, an average adult thumb is about 1 inch wide, and a standard sheet of printer paper is approximately 8.5 inches by 11 inches.

## What is a centimeter (cm)?

A centimeter (cm) is a unit of length in the International System of Units (SI), which is the successor to the metric system. It is equal to one one-hundredth of a meter, ten millimeters, or 0.3937 inches. The metric system, including the centimeter, is widely used globally and is based on powers of 10, providing a convenient and consistent framework for measurements.

The centimeter was first defined in 1795 as part of the original metric system. It was originally called a “centime”, but the name was changed to “centimeter” in 1875. The metric system is a decimal-based system of measurement that is used by most countries in the world.

To provide a sense of scale, consider that the width of a standard paperclip is approximately 1 centimeter, and the average length of a newborn baby’s fingernail is about 0.5 centimeters.

Understanding the conversion from inches to centimeters is essential when dealing with measurements in different systems, and it is particularly useful in various fields such as construction, design, and manufacturing. The conversion factor of 2.54 allows for accurate transformations between these units of length.