Millimeter To Micrometer Conversion Chart

Millimeter (mm) Micrometer (μm)
0.01 mm10 μm
0.1 mm100 μm
1 mm1000 μm
2 mm2000 μm
5 mm5000 μm
10 mm10000 μm
20 mm20000 μm
50 mm50000 μm
100 mm100000 μm
500 mm500000 μm
1000 mm1000000 μm

Convert from millimeter to micrometer formula

Total micrometer = Total millimeter x 1000

For example, if you want to convert 100 Millimeter to Micrometer then,

100 mm = 100 x 1000 = 100000 μm

Convert from micrometer to millimeter formula

Total millimeter =
Total micrometer
100000 μm
= 100 mm


A millimeter is the smallest unit. There are 10 mm in one centimeter, if an object is smaller than one centimeter, you would use millimeters. A scientist measuring something under a magnifying glass might use millimeters to represent a tiny specimen.


The micrometre also commonly known as a micron, is an SI derived unit of length equalling 1×10−6 metre. The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, and for grading wool by the diameter of the fibres.