What is the audible frequency range for humans?

Roughly 20 Hz to 20,000 Hz. Frequencies below 20 Hz are infrasound; above 20 kHz are ultrasound.

How does frequency relate to pitch?

Higher frequency corresponds to higher perceived pitch. Doubling the frequency raises the pitch by one octave.

Can frequency change as a wave moves between media?

No. Frequency stays constant when a wave passes from one medium to another; it is the wavelength and speed that change.

Free Frequency Calculator

Calculate wave frequency from speed and wavelength using f = v / lambda.

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Wave Speed

m/s

Wavelength

Frequency

439.74 Hz

Period0.002274 s

Frequency vs Wave Speed

View formula & how it works →

Frequency

Frequency is the number of complete wave cycles passing a point per second.

Formula

f = v / lambda

The reciprocal of frequency is the period: T = 1 / f = lambda / v.

Example Calculation

Sound traveling at 343 m/s with a wavelength of 0.78 m.

01f = v / lambda
02f = 343 / 0.78
03f = 439.7 Hz
04T = 1 / f = 0.002274 s

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