Convert millimeter (mm) to micrometer (µm).
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Micrometer to Millimeter Converter (µm to mm)
Convert micrometer (µm) to millimeter (mm).Unit Converter · Length
Quick answer
1 micrometer (µm) is equal to 0.001 millimeters (mm). 1 millimeter (mm) is equal to 1,000 micrometers (µm).
To convert µm to mm, multiply the value in micrometers by 0.001 (or divide by 1,000). For example, 10 µm = 0.01 mm, and 100 µm = 0.1 mm.
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Quick reference — micrometer to millimeter
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How to convert micrometers to millimeters
How many millimeters are in a micrometer? 1 micrometer is 0.001 millimeters. This free µm to mm converter and micrometer to millimeter calculator gives the answer instantly for any value, and the same conversion is also written as micrometre to millimetre.
To convert micrometer (µm) to millimeter (mm), multiply the value in micrometers by 0.001, or divide it by 1,000.
mm = µm × 0.001
- 1
Take the value in micrometers
For example, 25 µm.
- 2
Multiply by 0.001
25 × 0.001.
- 3
Read the answer in millimeters
25 µm = 0.025 mm.
Micrometer to Millimeter conversion table
Common values from 1 to 1,000 micrometers converted to millimeters.
| Micrometer (µm) | Millimeter (mm) |
|---|---|
| 1 µm | 0.001 mm |
| 2 µm | 0.002 mm |
| 3 µm | 0.003 mm |
| 4 µm | 0.004 mm |
| 5 µm | 0.005 mm |
| 6 µm | 0.006 mm |
| 7 µm | 0.007 mm |
| 8 µm | 0.008 mm |
| 9 µm | 0.009 mm |
| 10 µm | 0.01 mm |
| 15 µm | 0.015 mm |
| 20 µm | 0.02 mm |
| 25 µm | 0.025 mm |
| Micrometer (µm) | Millimeter (mm) |
|---|---|
| 30 µm | 0.03 mm |
| 40 µm | 0.04 mm |
| 50 µm | 0.05 mm |
| 60 µm | 0.06 mm |
| 70 µm | 0.07 mm |
| 75 µm | 0.075 mm |
| 80 µm | 0.08 mm |
| 90 µm | 0.09 mm |
| 100 µm | 0.1 mm |
| 250 µm | 0.25 mm |
| 500 µm | 0.5 mm |
| 1,000 µm | 1 mm |
About micrometers and millimeters
Micrometer (µm)
A micrometer (µm) is one millionth of a meter. It is used for microscopic sizes such as cells and fine fibers.
Millimeter (mm)
A millimeter (mm) is one thousandth of a meter. It is the smallest division on most rulers and tape measures.
µm to mm: common questions
- How many millimeters are in 1 micrometer?
- 1 micrometer (µm) is equal to 0.001 millimeters (mm). In short: 1 µm = 0.001 mm.
- How do I convert micrometers to millimeters?
- To convert µm to mm, multiply the value in micrometers by 0.001 (or divide by 1,000). For example, 5 µm = 0.005 mm.
- How do I convert millimeters to micrometers?
- To convert mm to µm, multiply the value in millimeters by 1,000. Or open the Millimeter to Micrometer converter, which does it for you.
- What is 10 µm in mm, and what is 100 µm?
- 10 µm = 0.01 mm, and 100 µm = 0.1 mm. The table above lists more values from 1 to 1,000.
- Is this µm to mm converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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