1 micrometer = 0.001 millimeters
Convert micrometers to millimeters.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
mm = µm × 0.001
Worked through with a real value: 10 micrometers = 0.01 millimeters.
Going the other way: µm = mm × 1000, so 1 millimeter = 1000 micrometers.
What each unit is
- micrometer µm
- A millionth of a metre, also called a micron. Human hair is roughly 70 of them across.
- millimeter mm
- A thousandth of a metre, and the working unit of engineering drawings, rainfall and camera focal lengths.
Conversion tables
| micrometers (µm) | millimeters (mm) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| millimeters (mm) | micrometers (µm) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 6 | 6000 |
| 7 | 7000 |
| 8 | 8000 |
| 9 | 9000 |
| 10 | 10000 |
| 20 | 20000 |
| 25 | 25000 |
| 50 | 50000 |
| 75 | 75000 |
| 100 | 100000 |
Questions
How many millimeters are in a micrometer?
1 micrometer = 0.001 millimeters.
How do I convert micrometers to millimeters?
Use mm = µm × 0.001. For example, 10 micrometers = 0.01 millimeters.
How many micrometers are in one millimeter?
1 millimeter = 1000 micrometers.
What is 10 micrometers in millimeters?
10 micrometers = 0.01 millimeters.
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