### Inch

**Definition:** An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.

### Millimeter

**Definition:** A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined in terms of the meter, as 1/1000 of a meter, or the distance traveled by light in 1/299 792 458 000 of a second.

### MM to Inches Conversion Table

Millimeter [mm] | Inch [in] |
---|---|

0.01 mm | 0.0003937008 in |

0.1 mm | 0.0039370079 in |

1 mm | 0.0393700787 in |

2 mm | 0.0787401575 in |

3 mm | 0.1181102362 in |

5 mm | 0.1968503937 in |

10 mm | 0.3937007874 in |

20 mm | 0.7874015748 in |

50 mm | 1.968503937 in |

100 mm | 3.937007874 in |

1000 mm | 39.3700787402 in |