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Tone Generator

Play a pure tone at any frequency with a choice of waveforms.

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Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

Use Download to save this tool as one HTML file for offline use.

Frequency

Waveform

Volume

About this tool

Generate a pure audio tone right in your browser using the Web Audio API — pick a frequency, waveform and volume, then play.

What frequencies can I play?

Anything from 20 Hz to 20,000 Hz, which covers the normal range of human hearing.

Why do I hear nothing?

Your browser may not support the Web Audio API, or the volume is at zero. Audio also only starts after you click Play.