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

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## Energy from Wavenumber Formula

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

**E = -k*h**

Variables:

- 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:**

- First, determine the wavenumber. In this example, the wavenumber is measured to be 1441.
- 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)