Millimeters to Micrometers
Type a value — result updates instantly.
mm
um
Quick reference
| Millimeters (mm) | Micrometers (um) |
|---|
Formula
Micrometers = millimeters × 1000
Multiply the millimeters value by 1000.0000000000001 to get micrometers. To reverse — divide micrometers by 1000.0000000000001 to get millimeters.
About this conversion
The millimeter (mm) is a metric unit equal to one thousandth of a meter, used in engineering and manufacturing. Learn more →
The micrometer (μm), also called a micron, is a metric unit equal to one millionth of a meter, used in manufacturing tolerances, cell biology and optics. Learn more →
Source: NIST International Reference