Convert millimeters to micrometers
1 mm = 1,000 µm. Change the amount below, or read the formula and the reference table further down.
1 millimeter equals
micrometers
1 mm = 1,000 µm
The formula
Millimeters and micrometers both measure length from the same zero, so a single multiplier does the job.
µm = mm × 1,000
Going the other way? Convert micrometers to millimeters.
Millimeters to micrometers table
Common values, rounded for reading.
| Millimeters (mm) | Micrometers (µm) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Questions people ask
- How many micrometers are in a millimeter?
- One millimeter equals 1,000 micrometers.
- How do I convert millimeters to micrometers by hand?
- Multiply the number of millimeters by 1,000. For a rough check, 1,000 is close enough for most everyday use.
- What is 1 millimeter in micrometers?
- 1 millimeter is 1,000 micrometers.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.