Convert Millimeters to Micrometers

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

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1 mm = 1,000 µm

How to Convert Millimeters to Micrometers

conversion scale showing millimeters and equivalent micrometers length values

To convert a millimeter measurement to a micrometer measurement, multiply the length by the conversion ratio. One millimeter is equal to 1,000 micrometers, so use this simple formula to convert:

micrometers = millimeters × 1,000

The length in micrometers is equal to the millimeters multiplied 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. Keep reading to learn more about each unit of measure.

Millimeters

One millimeter is equal to one-thousandth (1/1,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.

The millimeter, or millimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "milli" is the prefix for 10-3. Millimeters can be abbreviated as mm, for example 1 millimeter can be written as 1 mm.

Millimeters are often represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a US dime is 1.35mm.[1]

Micrometers

One micrometer is equal to one-millionth (1/1,000,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.

The micrometer, or micrometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "micro" is the prefix for 10-6. A micrometer is sometimes also referred to as a micron. Micrometers can be abbreviated as µm, for example 1 micrometer can be written as 1 µm.

To get an idea of the actual physical length of a micrometer, one human hair is 40-50 µm thick, demonstrating how small this unit of measure is.

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.

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

References

  1. United States Mint, Coin Specifications, https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications

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