Micrometer to Inch Converter
Convert Micrometer (µm) to Inch (in) instantly. 1 µm = 3.937008e-5 in.
Length Converter
31 units available
1 µm = 3.937008e-5 in
Formula:
in = µm × 0.0000393701With your value: 1 µm = 3.937008e-5 in
How big is that?
Everyday references on a logarithmic scale, all expressed in micrometer so you can sanity-check the result.
Other Micrometer to Inch conversions
Micrometer to Inch Conversion Table
| Micrometer (µm) | Inch (in) |
|---|---|
| 0.5 | 1.968504e-5 |
| 1 | 3.937008e-5 |
| 2 | 7.874016e-5 |
| 5 | 0.000197 |
| 10 | 0.000394 |
| 15 | 0.000591 |
| 20 | 0.000787 |
| 25 | 0.000984 |
| 50 | 0.001969 |
| 100 | 0.003937 |
| 250 | 0.009843 |
| 500 | 0.019685 |
| 1000 | 0.03937 |
Inch to Micrometer Conversion Table
| Inch (in) | Micrometer (µm) |
|---|---|
| 0.5 | 12,700 |
| 1 | 25,400 |
| 2 | 50,800 |
| 5 | 127,000 |
| 10 | 254,000 |
| 15 | 381,000 |
| 20 | 508,000 |
| 25 | 635,000 |
| 50 | 1,270,000 |
| 100 | 2,540,000 |
| 250 | 6,350,000 |
| 500 | 12,700,000 |
| 1000 | 25,400,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Micrometer (µm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Inch (in)
Length
1 inch = 25.4 mm exactly, fixed by the 1959 international yard and pound agreement.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
How to Convert Micrometer to Inch
To convert from Micrometer (µm) to Inch (in), multiply the value by 3.937008e-5.
Formula: in = µm × 0.0000393701
Reverse: µm = in × 25,400
Step-by-Step Example
- Start with your value in Micrometer. For example: 5 µm
- Multiply by the conversion factor: 5 x 3.937008e-5
- The result is: 0.000197 in
About Micrometer
The micrometre (micron) equals one millionth of a metre. It is the working scale of cells, machining tolerances and airborne particulates.
Common uses: microscopy, machining tolerances, air quality (PM).
About Inch
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
Fun Fact: The inch was historically defined as the width of a man's thumb.
Common uses: screen sizes, construction, clothing.
Frequently Asked Questions
How many Inch are in 1 Micrometer?
There are exactly 3.937008e-5 Inch in 1 Micrometer. This means the conversion factor from Micrometer to Inch is 3.937008e-5.
What is the formula to convert Micrometer to Inch?
The formula to convert Micrometer to Inch is: in = µm × 0.0000393701. For example, to convert 10 Micrometer to Inch, you would multiply 10 by 3.937008e-5.
What is a Micrometer?
The micrometre (micron) equals one millionth of a metre. It is the working scale of cells, machining tolerances and airborne particulates.
What is a Inch?
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
What are the common uses of Micrometer?
The Micrometer is commonly used in microscopy, machining tolerances, air quality (PM).
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Micrometer to Inch converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/micrometer-to-inch