Enter the wavelength into the calculator to determine the wavenumber. This calculator can also evaluate any of the variables given the others are known.

## Cm To Wavenumber Formula

The following formula is used to calculate the wavenumber.

W = 1 / λ

Variables:

- W is the wavenumber (cm
^{-1}) - λ is the wavelength in centimeters (cm)

To calculate the wavenumber, take the reciprocal of the wavelength in centimeters. This means dividing 1 by the wavelength. The result is the wavenumber, measured in reciprocal centimeters (cm^{-1}).

## What is Cm To Wavenumber?

Cm to wavenumber is a conversion used in spectroscopy, which is the study of the interaction between matter and electromagnetic radiation. The wavenumber, often used in infrared spectroscopy, is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance. It is typically measured in reciprocal centimeters (cm-1), hence the conversion from cm to wavenumber. The wavenumber is calculated as the reciprocal of the wavelength in centimeters (1/wavelength).

## How to Calculate Cm To Wavenumber?

The following steps outline how to calculate the Cm To Wavenumber using the formula: W = 1 / λ

- First, determine the wavelength in centimeters (λ).
- Next, use the formula W = 1 / λ to calculate the wavenumber (W).
- Finally, calculate the Cm To Wavenumber.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

wavelength in centimeters (λ) = 5