Convert Millimeters to Micrometers

Enter the length in millimeters below to get the value converted to micrometers.

Results in Micrometers:
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1 mm = 1,000 µm

How to Convert Millimeters to Micrometers

Tape measures can be used to measure units of length, and a calculator can be used to convert to another unit

Convert millimeters to micrometers with this simple formula:

micrometers = millimeters × 1,000

Converting a millimeter length measurement to a micrometer measurement involves multiplying the length by the conversion ratio to find the result. One millimeter is equal to 1,000 micrometers, so to convert simply multiply by 1,000.

For example, here's how to convert 5 millimeters to micrometers using the formula above.
5 mm = (5 × 1,000) = 5,000 µm

Our inch fraction calculator can add millimeters and micrometers together and it also automatically converts the results to US customary, imperial and SI metric values.

Millimeters and micrometers are both units used to measure length. Learn more about length and find more length measurement conversion calculators. Millimeters are a metric measurement and can be abbreviated as mm, for example 1 mm. Micrometers are a metric measurement and can be abbreviated as µm, for example 1 µm. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

Millimeter is spelled millimetre internationally, and it is equal in length to .1 centimeters, 1000 micrometers, or 5/127 inch. They are represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a dime is 1.35mm.

To get an idea of how small a millimeter is, a dime is 1.35mm thick.

A human hair is 40-50 micrometers thick or 0.000001 meters, making this a very small unit of measure. The micrometer is often referred to as a micron and internationally it is spelled micrometre.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs. If you need a ruler you can also download and print our free printable rulers which include both imperial and metric measurements.

millimeters and micrometers are units used to measure length
Convert Micrometers to Millimeters

Millimeter Measurements and Equivalent Micrometer Conversions

Common millimeter values converted to the equivalent micrometer value
Millimeters Micrometers
1 mm 1,000 µm
2 mm 2,000 µm
3 mm 3,000 µm
4 mm 4,000 µm
5 mm 5,000 µm
6 mm 6,000 µm
7 mm 7,000 µm
8 mm 8,000 µm
9 mm 9,000 µm
10 mm 10,000 µm
11 mm 11,000 µm
12 mm 12,000 µm
13 mm 13,000 µm
14 mm 14,000 µm
15 mm 15,000 µm
16 mm 16,000 µm
17 mm 17,000 µm
18 mm 18,000 µm
19 mm 19,000 µm
20 mm 20,000 µm
21 mm 21,000 µm
22 mm 22,000 µm
23 mm 23,000 µm
24 mm 24,000 µm
25 mm 25,000 µm
26 mm 26,000 µm
27 mm 27,000 µm
28 mm 28,000 µm
29 mm 29,000 µm
30 mm 30,000 µm
31 mm 31,000 µm
32 mm 32,000 µm
33 mm 33,000 µm
34 mm 34,000 µm
35 mm 35,000 µm
36 mm 36,000 µm
37 mm 37,000 µm
38 mm 38,000 µm
39 mm 39,000 µm
40 mm 40,000 µm

More Millimeter Length Conversions

US Customary & Imperial Units
Convert to Miles
1 mm is equal to 6.2137E-7 miles
Convert to Yards
1 mm is equal to 0.001094 yards
Convert to Feet
1 mm is equal to 0.003281 feet
Convert to Inches
1 mm is equal to 0.03937 inches
SI Units
Convert to Kilometers
1 mm is equal to 1.0E-6 kilometers
Convert to Meters
1 mm is equal to 0.001 meters
Convert to Centimeters
1 mm is equal to 0.1 centimeters
Convert to Nanometers
1 mm is equal to 1,000,000 nanometers