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Nanometers to Micrometers Converter
↔ Convert µm to nm instead

Common Conversions

nm µm
1 0.001
10 0.01
50 0.05
100 0.1
200 0.2
400 0.4
532 0.532
700 0.7
1000 1
2000 2
5000 5
10000 10

Why this conversion matters in chemistry

Flow-cytometry gating is one of the everyday contexts. Configuring forward-scatter and side-scatter for a mixed sample where particles span 100 nm extracellular vesicles through µm-scale apoptotic cells needs both regimes on the same axis. A 200 nm exosome and a 10 µm cell sit two prefix decades apart on the size scale. The multiplier of 0.001 µm per nm comes from the nano and micro prefix step. Mostly it's a unit-system step between spectroscopy and nanoparticle nm-scale data with the µm-scale typical optical-microscopy field.

Formula

µm = nm / 1000

Worked Examples

532 nm = 0.532 µm

Green laser wavelength — common Raman-spectroscopy excitation.

100 nm = 0.1 µm

Upper-end nanoparticle diameter — below this, quantum-confinement effects emerge.

254 nm = 0.254 µm

UV-C germicidal wavelength — used for surface sterilization in chemistry labs.

1000 nm = 1 µm

Boundary between near-IR and mid-IR spectral regions.

Frequently Asked Questions

How do I convert nm to µm?
Divide by 1000. The relationship is exact: 1 µm = 1000 nm. So 532 nm becomes 0.532 µm.
Why is the nm vs µm boundary important?
Particles below ~100 nm (0.1 µm) sit in the nanoparticle regime where quantum-confinement and high surface-area effects emerge. Above ~1000 nm (1 µm), bulk-material behavior takes over. The 100–1000 nm range is the transition zone where size-dependent properties shift.
What spectral regions correspond to nm and µm?
UV 100–400 nm; visible 400–700 nm; near-IR 700–2500 nm; mid-IR 2.5–25 µm; far-IR 25–1000 µm. UV-Vis spectroscopy reports in nm; IR spectroscopy often uses µm or wavenumbers (cm⁻¹).
How do nanoparticle sizes compare in the two units?
Gold nanoparticles 5–100 nm; quantum dots 2–10 nm; silver nanoparticles 10–100 nm; latex beads 100–10000 nm (0.1–10 µm). The boundary at 1 µm separates nanotechnology and microparticle work.