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... Millimeter = ... Micrometer
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Millimeter to Micrometer Converter
Use this page to convert millimeter values into micrometer, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 mm = 1,000 um
1 um = 0.001 mm
Example: 15 mm = 15,000 um
Millimeter
A millimeter is 1/1,000 of a meter in the SI system.
History: It became widely used with metric manufacturing and engineering tolerances.
Current use: Millimeters are common in product specs, machining, and technical drawings.
Also written as mm, millimeters, millimetre, millimetres.
Micrometer
A micrometer is one millionth of a meter.
History: Micrometers became practical with precision optics, microscopy, and industrial measurement.
Current use: Micrometers are used in biology, materials science, machining tolerances, and semiconductor work.
Also written as um, micrometers, micrometre, micrometres, micron, microns.
Millimeter to Micrometer table
| Millimeter [mm] | Micrometer [um] |
|---|---|
| 0.01 mm | 10 um |
| 0.1 mm | 100 um |
| 1 mm | 1,000 um |
| 2 mm | 2,000 um |
| 5 mm | 5,000 um |
| 10 mm | 10,000 um |
| 20 mm | 20,000 um |
| 50 mm | 50,000 um |
| 100 mm | 100,000 um |
Frequently asked questions
How many Micrometer (um) are in one Millimeter (mm)?
One Millimeter equals 1,000 Micrometer.
How do you convert Millimeter to Micrometer?
Multiply the Millimeter value by 1,000 to get the result in Micrometer.
How do you convert Micrometer back to Millimeter?
Multiply the Micrometer value by 0.001 to get back to Millimeter.
What is 15 Millimeter in Micrometer?
15 Millimeter equals 15,000 Micrometer.