Tone generator

Create a sine, square, triangle or sawtooth tone with a chosen frequency and duration.

On your device · No account

Privacy details

Tone generator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Frequency (Hz)

More options

Duration (seconds)

Amplitude (%)

Waveform

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-19

Using Tone generator

Tone generator produces a local PCM WAV file with a browser audio preview. Playback begins only when you press the audio control, and stops when the result changes or the page closes.

Next: Audio tester

A worked example

A 440 Hz tone lasting one second is stored as 48,000 mono samples. The short edge fades reduce abrupt starts and stops.

Before you use the result

This is audio synthesis, not a calibrated hearing test or device diagnosis. Square, triangle and sawtooth waves contain harmonics and can alias at high frequencies. Device volume and speakers determine actual loudness.

Cite this page

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ToolOctopus. “Tone generator.” Updated 2026-09-19. https://tooloctopus.com/tone-generator.

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