Wavelength Calculator Formula

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

Use the Wavelength Calculator

Formulas Used

Wavelength

wavelength = wave_speed / frequency

Wavelength (cm)

wavelength_cm = (wave_speed / frequency) * 100

Variables

VariableDescriptionDefault
wave_speedWave Speed(m/s)343
frequencyFrequency(Hz)440

How It Works

Wavelength

Wavelength is the spatial distance between two consecutive points of equal phase on a wave.

Formula

lambda = v / f

Longer wavelengths correspond to lower frequencies when speed is constant.

Worked Example

Concert A note (440 Hz) in air at 343 m/s.

wave_speed = 343frequency = 440
  1. 01lambda = v / f
  2. 02lambda = 343 / 440
  3. 03lambda = 0.7795 m
  4. 04lambda = 77.95 cm

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