Tone Generator Online
Generate precise audio tones from 20 Hz to 20 kHz
How to Use the Tone Generator
This tool turns your browser into a signal generator. Pick a frequency, choose a waveform, and hit play. Useful for testing speakers, tuning instruments, calibrating audio equipment, or checking your own hearing range.
Set the frequency
Drag the slider or tap a preset button. The range goes from 20 Hz (deep rumble) to 20,000 Hz (the upper limit of human hearing). Most music sits between 80 Hz and 4,000 Hz.
Choose a waveform
Sine gives a pure, clean tone. Square sounds harsher and buzzy. Sawtooth is bright and edgy. Triangle sits between sine and square. Pick the one that fits what you are testing.
Adjust volume and play
Start with the volume low, then raise it. High frequencies at full volume can be harsh on your ears. Click Play Tone to start and Stop to silence it instantly.
Common Questions About Tone Generation
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