# Inches to Millimeters Calculator

Last updated: July 26, 2024

Use this Inches to Millimeters calculator to quickly convert inches to millimeters. Just enter the value in inches, and the corresponding millimeter value will appear instantly.

## Conversion

## Explanation

### What is an Inch?

An inch (abbreviated as "in" or ″) is a unit of length commonly used in the United States and other countries that still follow the imperial system. One inch is equal to 1/12 of a foot, or 2.54 centimeters in the metric system.

### Understanding Millimeters

A millimeter (abbreviated as "mm") is a metric unit of length. It is one-thousandth of a meter, making it a versatile unit for measuring small lengths. One millimeter is approximately 0.03937 inches.

### How to Convert Inches to Millimeters

To convert inches to millimeters, multiply the number of inches by 25.4, since there are 25.4 millimeters in one inch. For example, 10 inches equals 254 millimeters.

### How to Convert Millimeters to Inches

To convert millimeters to inches, divide the number of millimeters by 25.4. For example, 254 millimeters is approximately 10 inches.

### Practical Example

If you have 5 inches and want to know how many millimeters that equals, multiply 5 by 25.4. The result is 127 millimeters.

## Inches to Millimeters Conversion Table

Inches (") | Millimeters (mm) |
---|---|

1 in | 25.4 mm |

2 in | 50.8 mm |

3 in | 76.2 mm |

4 in | 101.6 mm |

5 in | 127 mm |

6 in | 152.4 mm |

7 in | 177.8 mm |

8 in | 203.2 mm |

9 in | 228.6 mm |

10 in | 254 mm |

20 in | 508 mm |

30 in | 762 mm |

40 in | 1016 mm |

50 in | 1270 mm |

## FAQs

### How do you convert inches to millimeters?

To convert inches to millimeters, multiply the number of inches by 25.4.

### How do you convert millimeters to inches?

To convert millimeters to inches, divide the number of millimeters by 25.4.

### How many millimeters are in 5 inches?

There are 127 millimeters in 5 inches.