Enter the speed of light and the wavelength in the calculator to determine the frequency of light.

Frequency of Light Formula

The following equation can be used to calculate the frequency of light.

f = c/w
  • Where f is the frequency
  • c is the speed of light
  • w is the wavelength

To calculate the frequency of light, divide the speed of light by the light wavelength.

Frequency of Light Definition

The frequency of light is defined as the inverse of the total time it takes light to travel one wavelength.

Frequency of Light Example

How to calculate the frequency of light?

  1. First, determine the speed of light.

    The speed of light in a vacuum is 299 792 458 m / s.

  2. Next, determine the wavelength.

    Calculate the wavelength of the light photon.

  3. Finally, calculate the frequency.

    Calculate the frequency using the formula above.


What is frequency?

Frequency is the inverse of the time it takes something to travel one wavelength, measure in s^-1 or Hz/