## How to convert millimeters to centimetes and how to calculate

1 mm is equal to 0.1 centimeters:

1 mm = 0.1 cm

The distance *d* in centimeters (cm) is equal to the distance *d* in millimeters (mm) divided by 10:

*d*_{(cm)} = *d*_{(mm)} / 10

#### Example

Convert 20 millimeters to centimeters:

*d*_{(cm)} = 20mm / 10 = 2cm

## Definition:

There are ten millimetres in a centimetre. One millimetre is equal to 1000 micrometres or 1000000 nanometres. Since an inch is officially defined as exactly 25.4 millimetres, a millimetre is equal to exactly 5⁄127 (≈ 0.03937) of an inch.

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.

##
Millimeters to centimeters conversion table

Millimeters (mm) |
Centimeters (cm) |

0.01 mm |
0.001 cm |

0.1 mm |
0.01 cm |

1 mm |
0.1 cm |

2 mm |
0.2 cm |

3 mm |
0.3 cm |

4 mm |
0.4 cm |

5 mm |
0.5 cm |

6 mm |
0.6 cm |

7 mm |
0.7 cm |

8 mm |
0.8 cm |

9 mm |
0.9 cm |

10 mm |
1 cm |

20 mm |
2 cm |

30 mm |
3 cm |

40 mm |
4 cm |

50 mm |
5 cm |

60 mm |
6 cm |

70 mm |
7 cm |

80 mm |
8 cm |

90 mm |
9 cm |

100 mm |
10 cm |