# Units for Microspectroscopy

> Wavenumber (cm -1 ) Wavenumbers = 10 4 / Microns Wavenumbers = 10 7 / Nanometers

Source: https://www.microspectra.com/support/the-science/units-for-microspectroscopy/

![Microspectrometers are used in many different fields.](https://www.microspectra.com/wp-content/uploads/2026/08/ks12667.jpg)

## Nanometers

Nanometers = 107 / Wavenumbers
Nanometers = 1000 * Microns

## Microns (Micrometers)

Microns = 104 / Wavenumbers
Microns = Nanometers / 1000

**Wavenumber (cm-1)**
Wavenumbers = 104 / Microns
Wavenumbers = 107 / Nanometers

UV-visible-NIR spectra, such as those from the [2030PV PRO™ microspectrophotometer](https://www.microspectra.com/products/2030-microspectrophotometer/), are usually given in nanometers; Raman spectra, such as those from the [Apollo M™ Raman microspectrometer](https://www.microspectra.com/products/apollo-m-confocal-raman-microspectrometer/), in wavenumbers.