How to convert micrometers to millimeters
Formula: mm = µm × 0.001
Worked example: 10 µm → 10 × 0.001 = 0.01 mm
Micrometers to millimeters conversion chart
| Micrometers (µm) | Millimeters (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 |
| 12 µm | 0.012 mm |
| 15 µm | 0.015 mm |
| 20 µm | 0.02 mm |
| 25 µm | 0.025 mm |
| 30 µm | 0.03 mm |
| 40 µm | 0.04 mm |
| 50 µm | 0.05 mm |
| 75 µm | 0.075 mm |
| 100 µm | 0.1 mm |
| 250 µm | 0.25 mm |
| 500 µm | 0.5 mm |
| 1,000 µm | 1 mm |
What is a micrometer?
The micrometer, often called a micron, is one millionth of a meter, or a thousandth of a millimeter. It is the scale of bacteria, fine dust and plastic wrap. Machinists use it for tight tolerances, and filter and particle sizes are rated in microns.
What is a millimeter?
The millimeter is one thousandth of a meter. It is the unit of engineering drawings, metric bolts and drill bits, camera focal lengths, jewelry and rainfall in most countries. In the US it shows up on tools, packaging and anything built to metric standards.