Test Tone Generator
Sine/square/sweep WAV synthesis.
How to use
Enter Frequency, Duration (s) and Wave into Test Tone Generator and press Run — or just type, live results update as you edit. AudioForge computes the answer instantly with a pure JavaScript engine (Web Worker for heavy inputs) on this page. Nothing is sent anywhere: no signup, no server round-trip, same inputs always give same outputs.
Steps
- Open the tool below (or scroll to the interactive Test Tone Generator).
- Enter Frequency, Duration (s) and Wave.
- Press Run (Ctrl+Enter) — or keep typing for live results.
- Copy the answer, download it, or share the link.
FAQ
Is Test Tone Generator really free?
Yes — free with no signup, no credits and no limits on this tool. It is supported by clearly labeled ads placed away from the buttons, never by paywalls.
Is anything I type into Test Tone Generator sent to a server?
No. Every keystroke is computed with a pure JavaScript engine (Web Worker for heavy inputs) inside this page. Close the tab and your data is gone — unless you explicitly download or share it.
What should I enter in "Frequency"?
Put your frequency here — for example: 440. Leave the defaults first to see how it works, then adjust. Every field is validated with a plain-language message if something is off.
I normally use 123apps — why switch?
If you are tired of upload queues for a 30-second trim and free exports with limits, AudioForge is the alternative: on-device Web Audio decode with real waveforms and WAV/Opus export, progress and cancel.
How accurate is Test Tone Generator?
Everything runs on your device, so results are instant and repeatable — same inputs, same outputs, no server involved.
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Free alternative
Free alternative to 123apps and Clideo for trimming, converting and inspecting audio — on-device Web Audio decode with real waveforms and WAV/Opus export, progress and cancel. 123apps vs Clideo vs AudioForge.
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