Enter the wavenumber into the calculator to determine the Energy from Wavenumber. 

Energy from Wavenumber Formula

The following equation is used to calculate the Energy from Wavenumber. 

E = -k*h


  • Where E is the Energy from Wavenumber (Joules)
  • k is the wavenumber 
  • h is Planck’s Constant (6.62607004 * 10^-34)

How to Calculate Energy from Wavenumber?

The following two example problems outline the steps and information needed in order to calculate the Energy from Wavenumber.

Example Problem #1:

  1. First, determine the wavenumber. In this example, the wavenumber is measured to be 1441.
  2. Finally, calculate the Energy from Wavenumber using the formula above: 

E = -k*h

Inserting the values from above and solving the equation with the imputed values gives: 

E = -6.62607004 * 10^-34*1441 = -9.54e-31 (Joules)

Example Problem #2: 

Using the same process as example problem 1, we first define the needed variables outlined by the formula. In this case, the values are provide as: 

wavenumber = 123561

Entering these values into the formula or calculator above gives us: 

E = -6.62607004 * 10^-34*123561 = 8.18 e-29 (Joules)