# Millimeters to Micrometers Converter

Use this converter to easily convert between Millimeters and Micrometers (mm to μm). Micrometers are also known as Microns.

## How many Micrometers equal one Millimeter?

Two of the units derived from the basic measurement unit of the metric system – the meter – are the millimeter and the micrometer. Their official abbreviations accepted by the International System of Units are respectively **mm** and **µm**. A micrometer is equal to 1/1,000 of a mm, so there are **1,000 µm in 1 millimeter**.

## Difference between Millimeters and Micrometers

The millimeter is a measurement unit used for the purpose of tracking small distances. Scientific, engineering, and mechanical tasks rely on accuracy and the mm is largely used when performing such.

Its definition – the path light travels in 1/299,792,458,000 seconds in vacuum – stems from the one of the meter. A millimeter is typically the smallest division marked on a ruler.

On the other hand, the micrometer is equivalent to 0.001 of a millimeter. It being of such small scale predetermines its application. The µm is usually used when measuring radiation wavelengths or cell sizes. The radius of a human hair ranges between 9 and 90 µm, while a droplet of mist, fog or cloud is about 10 µm in size.

The micrometer is also referred to as a **micron**, even though that term is not accepted by the SI. Using micron to name the unit is sometimes necessary in order to avoid confusion with the measuring tool called micrometer.

## How to convert Millimeters to Micrometers

In order to convert millimeters to micrometers you can use the formula:

**mm x 1,000 = µm**,

or simply shift the decimal point in the millimeter three places to the right.

#### Mm to μm conversion example

Sample task: * convert 30 millimeters to micrometers*. Solution:

*Formula:*

mm * 1000 = μm

*Calculation:*

30 mm * 1,000 = 30,000 μm

*End result:*

30 mm is equal to 30,000 μm

## mm to μm conversion table

mm | μm |
---|---|

1 mm | 1,000 μm |

2 mm | 2,000 μm |

3 mm | 3,000 μm |

4 mm | 4,000 μm |

5 mm | 5,000 μm |

6 mm | 6,000 μm |

7 mm | 7,000 μm |

8 mm | 8,000 μm |

9 mm | 9,000 μm |

10 mm | 10,000 μm |

20 mm | 20,000 μm |

30 mm | 30,000 μm |

40 mm | 40,000 μm |

50 mm | 50,000 μm |

60 mm | 60,000 μm |

70 mm | 70,000 μm |

80 mm | 80,000 μm |

90 mm | 90,000 μm |

100 mm | 100,000 μm |

200 mm | 200,000 μm |

300 mm | 300,000 μm |

400 mm | 400,000 μm |

500 mm | 500,000 μm |

600 mm | 600,000 μm |

700 mm | 700,000 μm |

800 mm | 800,000 μm |

900 mm | 900,000 μm |

1,000 mm | 1,000,000 μm |

#### References:

[1] NIST Special Publication 330 (2008) - "The International System of Units (SI)", edited by Barry N.Taylor and Ambler Thompson

[2] International Organization for Standardization (1993). ISO Standards Handbook: Quantities and units (3rd edition). Geneva: ISO. ISBN 92-67-10185-4.

#### Cite this converter & page

If you'd like to cite this online converter resource and information as provided on the page, you can use the following citation:

Georgiev G.Z., *"Mm to micrometer Converter"*, [online] Available at: https://www.gigacalculator.com/converters/convert-mm-to-micrometer.php URL [Accessed Date: 21 Jan, 2020].