Science Facts - Frequency Conversion

This calculator converts between the various ways to express the frequency of light. To say that having 4 different methods to describe basically the same property is confusing would be a tremendous understatement. The purpose of this page is to simplify this.

To Use - just type a value into any cell and the others will be automatically computed (there is a fair amount of round-off error)

Javascript Calculator

Frequency THz  
Wavelength nm  
Wavenumber   cm-1  
Energy eV  
Set Wavelength