# Convert Millimeters (mm) to Micrometers (μm)

Please provide the values below to convert from Millimeter (mm) to Micrometers (μm) and vice versa.

### 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 Micrometer?

The Micrometre (SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length equalling 1×10−6 meter (SI standard prefix "micro-" = 10−6); that is, one-millionth of a meter (or one-thousandth of a millimeter, 0.001 mm, or about 0.00004 inches).

A micrometer is a standard unit of measurement used to measure wavelengths of infrared radiations, sizes of biological cells and bacteria, and for grading wool by the diameter of the fibers.

The width of a single human hair ranges from approximately 20 to 200 μm. The longest human chromosome, chromosome 1, is approximately 10 μm in length.

### How to Convert Millimeter to Micrometers?

To convert Millimeter to Micrometers, simply multiply the Millimeter value by 1000.

The formula used to calculate Millimeter to Micrometers -

d(mm) = d(μm) * 1000

The distance d in Micrometers (μm) is equal to the distance d in Millimeters (mm) multiplied by 1000.

### How many Micrometers in a Millimeter

In simple terms, 1 mm is equal to 1000 μm.

The formula used is 1*1000 = 1000(μm)

### How many Millimeters in a Micrometer

1 Micrometer is equal to 0.001 Millimeters. So we can also say that there are 0.001 Millimeters in a Micrometer.

### Millimeter to Micrometers Conversion Table

Millimeter (mm)Micrometer (μm)
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)