Electromagnetic Wavelength Calculator Formula

Understand the math behind the electromagnetic wavelength calculator. Each variable explained with a worked example.

Use the Electromagnetic Wavelength Calculator

Formulas Used

Wavelength

wavelength = 299792458 / frequency

Wavelength (cm)

wavelength_cm = 29979245800 / frequency

Variables

VariableDescriptionDefault
frequencyFrequency(Hz)100000000

How It Works

EM Wavelength

All electromagnetic waves travel at the speed of light in vacuum.

Formula

lambda = c / f

where c = 299,792,458 m/s. This applies to radio waves, microwaves, infrared, visible light, UV, X-rays, and gamma rays.

Worked Example

An FM radio station broadcasting at 100 MHz.

frequency = 100000000
  1. 01lambda = c / f
  2. 02lambda = 299792458 / 100000000
  3. 03lambda = 2.998 m

Ready to run the numbers?

Open Electromagnetic Wavelength Calculator