Frequency-Wavelength Calculator Formula

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

Use the Frequency-Wavelength Calculator

Formulas Used

Wavelength (m)

wavelength_m = 299.792 / frequency_mhz

Wavelength (cm)

wavelength_cm = 29979.2 / frequency_mhz

Wavelength (mm)

wavelength_mm = 299792 / frequency_mhz

Variables

VariableDescriptionDefault
frequency_mhzFrequency(MHz)2400

How It Works

Frequency-Wavelength Relationship

Formula

wavelength = c / f

c = 299,792,458 m/s (speed of light)

Higher frequency means shorter wavelength. This relationship is fundamental to antenna design, optics, and RF engineering.

Worked Example

Wi-Fi at 2400 MHz (2.4 GHz).

frequency_mhz = 2400
  1. 01Wavelength = 299.792 / 2400 = 0.1249 m
  2. 02Wavelength = 12.49 cm
  3. 03Wavelength = 124.9 mm

Ready to run the numbers?

Open Frequency-Wavelength Calculator