How many micrometers are in a nanometer?

1 nanometer equals 0.001 micrometers (µm). Equivalently, 1 micrometer equals 1000 nanometers.

What is the formula for nm to µm?

Multiply the nanometer value by 0.001 (or divide by 1000). For example, 500 nm × 0.001 = 0.5 µm.

Is this converter accurate for scientific use?

Yes. The conversion factor is exact (1 nm = 10⁻³ µm by definition in the SI unit system). Results are displayed up to 10 significant digits to avoid rounding loss.

Can I convert micrometers back to nanometers?

Yes. Click the "Swap" button to switch the direction and convert µm → nm instead.

What is the difference between a nanometer and a micrometer?

A micrometer (µm) is 1000 times larger than a nanometer (nm). Both are subdivisions of a millimeter: 1 mm = 1,000 µm = 1,000,000 nm.

Nanometers to Micrometers Converter

Name: Nanometers to Micrometers Converter
Availability: InStock
Author: Nham Vu

Instantly convert nanometers (nm) to micrometers (µm) — enter one value or a list and get results in real time.

Input

nm µm

Value in nm

Result

—

µm

1 nm =

0.001 µm

1 µm =

1,000 nm

1 mm =

10⁶ nm

Common Conversions

Nanometers (nm)	Micrometers (µm)	Context
0.1 nm	0.0001 µm	~Size of a hydrogen atom
1 nm	0.001 µm	DNA strand width
7 nm	0.007 µm	Modern transistor node
100 nm	0.1 µm	Small virus
500 nm	0.5 µm	Visible light wavelength
1,000 nm	1 µm	1 micrometer exactly
10,000 nm	10 µm	Red blood cell width

Summary

Instantly convert nanometers (nm) to micrometers (µm) — enter one value or a list and get results in real time.

How it works

Type a nanometer value into the input field.
The equivalent micrometer value appears immediately below.
Use the bulk mode to convert multiple values at once — one per line.
Click "Copy Result" to copy the output to your clipboard.
Use "Swap" to reverse the direction and convert µm → nm.

Use cases

Converting semiconductor feature sizes between nm and µm.
Translating wavelength values in optics and photonics.
Working with microscopy measurements across unit scales.
Checking material dimensions in nanotechnology research.
Converting biology cell measurements from nm to µm.
Cross-checking unit values in scientific publications.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu