Calculators

Wavelength & Frequency Calculator

Convert wavelength to frequency or frequency to wavelength for light, radio or sound waves.

Hz
m
m/s
Light in vacuum: 299,792,458 m/s. Sound in air: about 343 m/s.

Enter your values and press Calculate.

How to use the Wavelength & Frequency calculator

Convert wavelength to frequency or frequency to wavelength for light, radio or sound waves. Enter your values above and press Calculate; the result appears instantly, and the formula used is shown below so you can check the working.

Formula

v = f λ; photon energy E = h f.

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