---
title: "Micrometers to Inches — µm to in converter"
description: "1 micrometer = 0.00003937 inches. Convert micrometers to inches with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/microns-to-inches/
site: "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

- [Inches to Micrometers](https://atoneplace.net/convert/inches-to-microns/)
- [Micrometers to Meters](https://atoneplace.net/convert/microns-to-meters/)
- [Micrometers to Kilometers](https://atoneplace.net/convert/microns-to-km/)
- [Micrometers to Centimeters](https://atoneplace.net/convert/microns-to-cm/)
- [Micrometers to Millimeters](https://atoneplace.net/convert/microns-to-mm/)
- [Micrometers to Miles](https://atoneplace.net/convert/microns-to-miles/)
- [Micrometers to Yards](https://atoneplace.net/convert/microns-to-yards/)
- [Micrometers to Feet](https://atoneplace.net/convert/microns-to-feet/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)