Convert micrometers to mm
Micrometers to millimeters. Enter a value to convert, or use the micrometers to mm chart further down the page.
1 micrometer equals 0.001 millimeters. Going the other way, 1 millimeter = 1,000 micrometers.
How to convert micrometers to mm
To convert micrometers to millimeters, multiply the micrometer value by 0.001. You can also divide by 1000 to get the same answer.
mm = µm × 0.001
Worked example
Convert 15 µm to millimeters:
15 µm = 0.015 mm
micrometers to mm conversion chart
Use this micrometers to mm table for quick reference without typing anything.
| micrometers (µm) | millimeters (mm) |
|---|---|
| 0.01 µm | 0.00001 mm |
| 0.1 µm | 0.0001 mm |
| 1 µm | 0.001 mm |
| 2 µm | 0.002 mm |
| 3 µm | 0.003 mm |
| 5 µm | 0.005 mm |
| 10 µm | 0.01 mm |
| 20 µm | 0.02 mm |
| 50 µm | 0.05 mm |
| 100 µm | 0.1 mm |
| 1,000 µm | 1 mm |
What is a micrometer?
The micrometer, also called the micron, is one millionth of a meter. It is the working scale of cell biology, air filtration ratings and semiconductor manufacturing.
What is a millimeter?
The millimeter is a metric unit equal to one thousandth of a meter. It is the smallest unit marked on a standard metric ruler and is the working unit of engineering drawings, machining tolerances and rainfall measurement.
Frequently asked questions
How many mm are in a micrometer?
1 micrometers equals 0.001 mm. Going the other way, 1 mm is 1,000 micrometers.
How do you convert micrometers to mm?
To convert micrometers to millimeters, multiply the micrometer value by 0.001. You can also divide by 1000 to get the same answer.
What is 10 micrometers in mm?
10 micrometers equals 0.01 mm. The conversion chart on this page lists the other values people look up most often.
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