Table Of Contents
Micrometers to millimeters Conversion
1 micrometers (μm) is equal to 0.001 millimeters (mm).
1 μm = 0.001 mm
or
1 mm = 1000 μm
Formula
To convert a length from micrometers (μm) to millimeters (mm), divide the length in micrometers by 1000
l(mm) = l(μm) / 1000
Examples:
Convert 20 micrometers to millimeters:
l(mm) = 20μm / 1000 = 0.02 mm
Conversion table
| Micrometers (μm) | Millimeters (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 |
| 25 μm | 0.025 mm |
| 50 μm | 0.05 mm |
| 100 μm | 0.1 mm |
| 250 μm | 0.25 mm |
| 500 μm | 0.5 mm |
| 1000 μm | 1 mm |
| Millimeters (mm) | Micrometers (μm) |
|---|---|
| 1 mm | 1000 μm |
| 2 mm | 2000 μm |
| 3 mm | 3000 μm |
| 5 mm | 5000 μm |
| 10 mm | 10000 μm |
| 20 mm | 20000 μm |
| 25 mm | 25000 μm |
| 50 mm | 50000 μm |
| 100 mm | 100000 μm |
| 250 mm | 250000 μm |
| 500 mm | 500000 μm |
| 1000 mm | 1000000 μm |
Frequently asked questions
How do I convert micrometers to millimeters?
Divide the value in micrometers by 1000 to get the result in millimeters. For example, 5 μm ÷ 1000 = 0.005 mm.
How many millimeters are in 1 micrometers?
1 micrometers (μm) is equal to 0.001 millimeters (mm).
How do I convert millimeters back to micrometers?
Use the inverse operation: multiply the value in millimeters by 1000 to get the result in micrometers.
How accurate is the micrometers to millimeters conversion?
The converter multiplies by the conversion factor 1000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
