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Convert millimeters to micrometers

Convert millimeters (mm) to micrometers (µm). 1 mm = 1,000 µm, and 1 µm = 0.001 mm.

1 mm = 1,000 µm

MM to Micrometers formula

µm = mm × 1,000

Multiply the number of millimeters by 1,000.

Example: To convert 1 mm to micrometers: 1 × 1,000 = 1,000 µm.

Quick answers

What is 1 mm in micrometers?
1 mm = 1,000 µm
What is 10 mm in micrometers?
10 mm = 10,000 µm
What is 25 mm in micrometers?
25 mm = 25,000 µm
What is 100 mm in micrometers?
100 mm = 100,000 µm

MM to Micrometers conversion table

Micrometers to MM table
millimeters (mm)micrometers (µm)
1 mm1,000 µm
2 mm2,000 µm
3 mm3,000 µm
4 mm4,000 µm
5 mm5,000 µm
6 mm6,000 µm
8 mm8,000 µm
10 mm10,000 µm
12 mm12,000 µm
15 mm15,000 µm
20 mm20,000 µm
25 mm25,000 µm
30 mm30,000 µm
40 mm40,000 µm
50 mm50,000 µm
75 mm75,000 µm
100 mm100,000 µm
150 mm150,000 µm
200 mm200,000 µm
250 mm250,000 µm
300 mm300,000 µm
500 mm500,000 µm
1,000 mm1,000,000 µm

Frequently asked questions

How many micrometers are in a millimeter?

There are 1,000 micrometers in a millimeter (1 mm = 1,000 µm).

How do I convert millimeters to micrometers?

Multiply the number of millimeters by 1,000. To convert 1 mm to micrometers: 1 × 1,000 = 1,000 µm.

Is the MM to Micrometers conversion exact?

Yes. Both units are defined exactly, so 1 millimeter is exactly 1,000 micrometers. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 mm in micrometers?

1 mm = 1,000 µm.

How do I convert micrometers back to millimeters?

Use the reverse relationship: 1 µm = 0.001 mm. The Micrometers to MM page has a converter and a full table.

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