### What is a Millimeter?

The **Millimetre** (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one-thousandth of a meter, which is the SI base unit of length. Therefore, there are one thousand millimeters in a meter and ten millimeters in a centimeter.

### What is a Kilometer?

The **Kilometre **(SI symbol: km) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for 1000).

A kilometer is a metric system unit mainly used to express distance in most of the world; notable exceptions are the United States and the United Kingdom, where the mile is the unit used. Even though kilometers and miles are used for measuring the same unit (distance), the value differs.

### How to Convert Millimeter to Kilometers?

To convert Millimeter to Kilometers, simply divide the Millimeter value by 1000000.

The formula used to calculate Millimeter to Kilometers -

**d**_{(mm)} = **d**_{(km)} / 1000000

The distance *d* in Kilometers (km) is equal to the distance *d* in Millimeters (mm) divided by 1000000.

### How many Kilometers in a Millimeter

In simple terms, 1 mm is equal to 1e-06 km.

The formula used is 1/1000000 = 1e-06(km)

### How many Millimeters in a Kilometer

1 Kilometer is equal to 1000000 Millimeters. So we can also say that there are 1000000 Millimeters in a Kilometer.

### Millimeter to Kilometers Conversion Table

Millimeter (mm) | Kilometer (km) |
---|---|

0.01 (mm) | |

0.02 (mm) | |

0.03 (mm) | |

0.04 (mm) | |

0.05 (mm) | |

1 (mm) | |

2 (mm) | |

3 (mm) | |

4 (mm) | |

5 (mm) | |

6 (mm) | |

7 (mm) | |

8 (mm) | |

9 (mm) | |

10 (mm) | |

20 (mm) | |

30 (mm) | |

40 (mm) | |

50 (mm) | |

60 (mm) | |

70 (mm) | |

80 (mm) | |

90 (mm) | |

100 (mm) | |

200 (mm) | |

300 (mm) | |

400 (mm) | |

500 (mm) | |

600 (mm) | |

700 (mm) | |

800 (mm) | |

900 (mm) | |

1000 (mm) | |

5000 (mm) | |

10000 (mm) |