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megametre millimetre |
to |
micrometre |

How many mm in 1 micrometre?
The answer is 0.001.

We assume you are converting between **millimetre** and **micrometre**.

You can view more details on each measurement unit:

mm or
micrometre

The SI base unit for **length** is the metre.

1 metre is equal to 1000 mm, or 1000000 micrometre.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between millimetres and micrometres.

Type in your own numbers in the form to convert the units!

1 mm to micrometre = 1000 micrometre

2 mm to micrometre = 2000 micrometre

3 mm to micrometre = 3000 micrometre

4 mm to micrometre = 4000 micrometre

5 mm to micrometre = 5000 micrometre

6 mm to micrometre = 6000 micrometre

7 mm to micrometre = 7000 micrometre

8 mm to micrometre = 8000 micrometre

9 mm to micrometre = 9000 micrometre

10 mm to micrometre = 10000 micrometre

You can do the reverse unit conversion from micrometre to mm, or enter any two units below:

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A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.

A micrometre (American spelling: micrometer, symbol µm) is an SI unit of length equal to one millionth of a metre, or about a tenth of the size of a droplet of mist or fog. It is also commonly known as a micron, although that term is officially outdated. It can be written in the expanded mathmatical notation (1×10^{-6} m)

The symbol µ is the "micro sign", which should look identical to the Greek letter mu (?) (the two may or may not look the same, depending on the font). The symbol "um" is sometimes used, when the µ and ? are not available, for example when using a typewriter.

The micrometre is a common unit of measurement for wavelengths of infrared radiation. Some people (especially in astronomy and the semiconductor business) use the old name micron and/or the solitary symbol µ (both of which were official between 1879 and 1967) to denote a micrometre. This practice persists in the face of official discouragement, perhaps to help disambiguate between the unit of measurement and the micrometer, a measuring device.

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