ONLINE AUDIO TOOL

Online Tone Generator

Generate a precise audio tone from 20 Hz to 20 kHz directly in your browser. Choose a frequency, waveform and volume, then play it instantly.

AUDIO FREQUENCY
440 Hz
Ready
WaveformSmooth and pure
sine
20 Hz – 20 kHz
Hz
20 Hz1 kHz10 kHz20 kHz
Quick frequenciesλ ∝ 1 / f
Frequency440 Hz
×
Visual wavelength180.0 px
1.00× longer wavelength than 440 Hz

Start audio only when you press play. Keep your device volume low before testing.

15%

HOW IT WORKS

Generate a frequency in seconds

Enter a frequency or move the slider to choose the tone you want. You can also use one of the common frequency presets. Press Play to generate the sound using your browser's Web Audio API.

The generator supports frequencies from 20 Hz through 20 kHz, covering the commonly used human-audible frequency range.

COMMON USES

What can you use a tone generator for?

Speaker testing

Play different frequencies to check how your speakers respond across the audible range.

Headphone testing

Use individual frequencies to check stereo output, balance and general headphone response.

Audio experiments

Generate controlled tones when working with audio equipment, recordings or browser-based experiments.

Reference tones

Quickly generate common reference frequencies such as 440 Hz and 1 kHz.