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

Convert Micrometers to Millimeters

Convert from micrometers to millimeters with this simple formula:
millimeters = micrometers × 0.001
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1 Micrometer = 0.001 Millimeters

Learn How to Convert Micrometers to Millimeters Using our Conversion Formula

Converting a micrometer length measurement to a millimeter measurement involves multiplying your length by the conversion ratio to find the result. A micrometer is equal to 0.001 millimeters, so to convert simply multiply by 0.001.

For example, 5µm = (5 × 0.001) = 0.005mm.

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

Micrometers and millimeters are both units used to measure length. Learn more about length and find more length measurement conversion calculators. A micrometer is a metric measurement and can be abbreviated as µm, for example 1µm. A millimeter is a metric measurement and can be abbreviated as mm, for example 1mm. 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.

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

More Length Conversions

Convert to Miles Length
1µm is equal to 6.2137E-10 miles
Convert to Yards Length
1µm is equal to 1.0936E-6 yards
Convert to Feet Length
1µm is equal to 3.2808E-6 feet
Convert to Inches Length
1µm is equal to 3.937E-5 inches
Convert to Kilometers Length
1µm is equal to 1.0E-9 kilometers
Convert to Meters Length
1µm is equal to 1.0E-6 meters
Convert to Centimeters Length
1µm is equal to 0.0001 centimeters
Convert to Nanometers Length
1µm is equal to 1,000 nanometers

Micrometer Measurements and Equivalent Millimeter Conversions

Common micrometer values converted to the equivalent millimeter value
Micrometers Millimeters Micrometers Millimeters Micrometers Millimeters
1 0.001 21 0.021 41 0.041
2 0.002 22 0.022 42 0.042
3 0.003 23 0.023 43 0.043
4 0.004 24 0.024 44 0.044
5 0.005 25 0.025 45 0.045
6 0.006 26 0.026 46 0.046
7 0.007 27 0.027 47 0.047
8 0.008 28 0.028 48 0.048
9 0.009 29 0.029 49 0.049
10 0.01 30 0.03 50 0.05
11 0.011 31 0.031 51 0.051
12 0.012 32 0.032 52 0.052
13 0.013 33 0.033 53 0.053
14 0.014 34 0.034 54 0.054
15 0.015 35 0.035 55 0.055
16 0.016 36 0.036 56 0.056
17 0.017 37 0.037 57 0.057
18 0.018 38 0.038 58 0.058
19 0.019 39 0.039 59 0.059
20 0.02 40 0.04 60 0.06