Micrometers to Inches (µm to in) Converter

How to convert micrometers to inches

Formulain = µm × 0.00003937007874

Because one inch equals 25,400 micrometers, you can also divide: in = µm ÷ 25,400.

A micrometer is smaller than an inch: it takes 25,400 micrometers to make one inch.

Worked examples

1 micrometer1 µm × 0.00003937007874 = 0.00003937007874 in
5 micrometers5 µm × 0.00003937007874 = 0.0001968503937 in
10 micrometers10 µm × 0.00003937007874 = 0.0003937007874 in
20 micrometers20 µm × 0.00003937007874 = 0.0007874015748 in
100 micrometers100 µm × 0.00003937007874 = 0.003937007874 in

Micrometers to inches conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Micrometers to inches: 0.1–10 µm
Micrometers (µm)	Inches (in)
0.1 µm	0.0000039370079 in
0.25 µm	0.0000098425197 in
0.5 µm	0.000019685039 in
1 µm	0.000039370079 in
2 µm	0.000078740157 in
3 µm	0.00011811024 in
4 µm	0.00015748031 in
5 µm	0.00019685039 in
6 µm	0.00023622047 in
7 µm	0.00027559055 in
8 µm	0.00031496063 in
9 µm	0.00035433071 in
10 µm	0.00039370079 in

Micrometers to inches: 12–1,000 µm
Micrometers (µm)	Inches (in)
12 µm	0.00047244094 in
15 µm	0.00059055118 in
20 µm	0.00078740157 in
25 µm	0.00098425197 in
30 µm	0.0011811024 in
40 µm	0.0015748031 in
50 µm	0.0019685039 in
75 µm	0.0029527559 in
100 µm	0.0039370079 in
250 µm	0.0098425197 in
500 µm	0.019685039 in
1,000 µm	0.039370079 in

About the units

Micrometer (µm)

One millionth of a metre, often called a micron. Human hair is roughly 50–100 µm across, and filter and particle sizes are given in micrometres. One micrometer equals 0.000001 meters (m).

Inch (in)

A US customary and imperial unit defined as exactly 25.4 mm since 1959. Twelve inches make a foot. Screen sizes, tire diameters and lumber dimensions are usually given in inches. One inch equals 0.0254 meters (m).

Frequently asked questions

How many inches are in one micrometer?

There are 0.00003937007874 inches in one micrometer, and this value is exact by definition.

How do I convert micrometers to inches?

Multiply the number of micrometers by 0.00003937007874. For example, 10 µm × 0.00003937007874 = 0.0003937007874 in.

How many micrometers are in one inch?

One inch equals 25,400 micrometers. That is the reverse factor, 1 ÷ 0.00003937007874.

What is 10 micrometers in inches?

10 µm = 0.0003937007874 in.

Is this µm to in converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Micrometers to Inches Converter