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mm to µm converter

1 mm = 1,000 µm

And 1 µm = 0.001 mm. Millimetres to micrometres (microns).

Formula

µm = mm × 1,000

A reading of 10 mm is 10 × 1,000 = 10,000 µm.

mm to µm table

mmµm
1 mm1,000 µm
2 mm2,000 µm
5 mm5,000 µm
10 mm10,000 µm
25 mm25,000 µm
50 mm50,000 µm
100 mm100,000 µm
500 mm500,000 µm
1,000 mm1,000,000 µm

µm to mm table

µmmm
1 µm0.001 mm
2 µm0.002 mm
5 µm0.005 mm
10 µm0.01 mm
25 µm0.025 mm
50 µm0.05 mm

About these units

mm (millimetres): Drawings, machining and tolerances.

µm (micrometres (microns)): Surface finish and fine tolerances.

The international inch is exactly 25.4 mm. A mil (or thou) is a thousandth of an inch, used for coating, film and tolerance values; do not confuse it with the millimetre.

Convert µm to mm instead · All length conversions

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