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Micrometer Converters

Convert micrometers (microns) to millimeters, nanometers, meters, thou (mils) and inches.

What this tool does

Convert micrometers (microns) to millimeters, nanometers, meters, thou (mils) and inches. Type an amount in micrometers, choose the units, and the tool converts it to millimeters. It offers 7 length units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Micrometer, Millimeter, Centimeter, Meter, Nanometer, Thou (mil), Inch. Starts as Micrometer.
  • To: Choose one of the same 7 units as "From". Starts as Millimeter.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from micrometers to millimeters:

  • 1 µm = 0.001 mm
  • 5 µm = 0.005 mm
  • 10 µm = 0.01 mm
  • 50 µm = 0.05 mm
  • 100 µm = 0.1 mm

Multiply the number of micrometers by 0.001 to get millimeters. Both units are exact definitions, so 0.001 is the exact factor: 1 µm = 0.001 mm.

Sources: Micrometer: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes). Millimeter: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes).

Limitations

  • Converts the unit of a length only. It does not work out a length from other measurements.
  • Uses the international inch, which is exactly 25.4 millimeters.

FAQs

Q: How many millimeters are in one micrometer?
A: One micrometer is 0.001 mm. Enter any value and the converter scales it for you.
Q: How do I convert millimeters to micrometers?
A: Choose millimeter in the From box and micrometer in the To box. One millimeter is 1000 µm.
Q: Is a micron the same as a micrometer?
A: Yes. Micron is the older name for the micrometer, one millionth of a meter.

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