# Convert Millimeters to Kilometers

Enter the length in millimeters below to get the value converted to kilometers.

**Results in Kilometers:**

## How to Convert Millimeters to Kilometers

Convert millimeters to kilometers with this simple formula:

Converting a millimeter length measurement to a kilometer measurement involves multiplying the length by the conversion ratio to find the result. One millimeter is equal to 1.0E-6 kilometers, so to convert simply multiply by 1.0E-6.

**For example,**here's how to convert 5 millimeters to kilometers using the formula above.

Our inch fraction calculator can add millimeters and kilometers together and it also automatically converts the results to US customary, imperial and SI metric values.

Millimeters and kilometers are both units used to measure length.
Learn more about length and
find more length measurement conversion calculators.
Millimeters are a metric measurement and can be abbreviated as *mm*, for example 1 mm.
Kilometers are a metric measurement and can be abbreviated as *km*, for example 1 km.
Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

Millimeter is spelled *millimetre* internationally,
and it is equal in length to .1 centimeters, 1000 micrometers, or ^{5}/_{127} inch. They are represented by the
smallest ticks on most metric rulers. To get a reference point of the size,
the thickness of a dime is 1.35mm.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs. If you need a ruler you can also download and print our free printable rulers which include both imperial and metric measurements.

## Millimeter Measurements and Equivalent Kilometer Conversions

Millimeters | Kilometers |
---|---|

1 mm | 0.000001 km |

2 mm | 0.000002 km |

3 mm | 0.000003 km |

4 mm | 0.000004 km |

5 mm | 0.000005 km |

6 mm | 0.000006 km |

7 mm | 0.000007 km |

8 mm | 0.000008 km |

9 mm | 0.000009 km |

10 mm | 0.00001 km |

11 mm | 0.000011 km |

12 mm | 0.000012 km |

13 mm | 0.000013 km |

14 mm | 0.000014 km |

15 mm | 0.000015 km |

16 mm | 0.000016 km |

17 mm | 0.000017 km |

18 mm | 0.000018 km |

19 mm | 0.000019 km |

20 mm | 0.00002 km |

21 mm | 0.000021 km |

22 mm | 0.000022 km |

23 mm | 0.000023 km |

24 mm | 0.000024 km |

25 mm | 0.000025 km |

26 mm | 0.000026 km |

27 mm | 0.000027 km |

28 mm | 0.000028 km |

29 mm | 0.000029 km |

30 mm | 0.00003 km |

31 mm | 0.000031 km |

32 mm | 0.000032 km |

33 mm | 0.000033 km |

34 mm | 0.000034 km |

35 mm | 0.000035 km |

36 mm | 0.000036 km |

37 mm | 0.000037 km |

38 mm | 0.000038 km |

39 mm | 0.000039 km |

40 mm | 0.00004 km |

## More Millimeter Length Conversions

**US Customary & Imperial Units**

- Convert to Miles
- 1 mm is equal to 6.2137E-7 miles
- Convert to Yards
- 1 mm is equal to 0.001094 yards
- Convert to Feet
- 1 mm is equal to 0.003281 feet
- Convert to Inches
- 1 mm is equal to 0.03937 inches

**SI Units**

- Convert to Meters
- 1 mm is equal to 0.001 meters
- Convert to Centimeters
- 1 mm is equal to 0.1 centimeters
- Convert to Micrometers
- 1 mm is equal to 1,000 micrometers
- Convert to Nanometers
- 1 mm is equal to 1,000,000 nanometers

## Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

## Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

### Here is a list of some of the common metric prefixes:

- “kilo” – 1,000x larger
- “hecto” – 100x larger
- “deca” – 10x larger
- “deci” – 10x smaller
- “centi” – 100x smaller
- “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”

The u in Until refers to the base unit.