At One Place

Micrometers to inches

1 micrometer in inches
1 µm = 0.00003937 in
in = µm × 0.000039370079

To convert micrometers to inches, multiply by 0.000039370079. The table below gives the values people look up most often, and the converter works for any number.

Micrometers to inches table

Common micrometer values converted to inches.
Micrometers Inches
1 µm 0.00003937
2 µm 0.00007874
3 µm 0.0001181
4 µm 0.0001575
5 µm 0.0001969
10 µm 0.0003937
15 µm 0.0005906
20 µm 0.0007874
25 µm 0.0009843
30 µm 0.0011811
40 µm 0.0015748
50 µm 0.0019685
75 µm 0.0029528
100 µm 0.003937
250 µm 0.0098425
500 µm 0.019685
1,000 µm 0.03937

How the conversion works

The relationship is in = µm × 0.000039370079. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Common questions

How many inches are in one micrometer?
One micrometer equals 0.00003937 inches. in = µm × 0.000039370079.
How do you convert micrometers to inches?
Use in = µm × 0.000039370079. So 10 µm is 0.0003937 in.
How many micrometers are in one inch?
One inch equals 25,400 micrometers, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked