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Tone Generator

Generate pure sine, square, triangle and sawtooth tones at any frequency.

440 Hz

A4 — 440.00 Hz

Volume: 50%

About Tone Generator

Tone Generator is a free browser-based audio tool that lets you generate pure sine, square, triangle and sawtooth tones at any frequency without installing any software. Musicians, podcasters, sound designers, and hobbyists use this tool for quick audio tasks directly in the browser. All audio processing happens locally using the Web Audio API — nothing is uploaded to any server.

How to Use

Load your audio Upload an audio file, record from your microphone, or use the built-in controls to get started.

Adjust settings Use the available controls to set parameters like frequency, tempo, volume, or effect type.

Listen and adjust Preview the audio output and fine-tune settings until you're satisfied with the result.

Save or export Download the audio output or copy any generated data for use in your project.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Tone Generator?

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Browser-Based Audio Tone Generator uses the Web Audio API for high-quality audio processing directly in your browser. No plugins, no downloads — just open and start.

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Your Audio Stays Private Audio files and recordings are processed locally on your device. Nothing is uploaded to any server or stored anywhere.

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Professional Features Get capabilities that traditionally required desktop software like Audacity or FL Studio, accessible instantly from any browser.

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Works on Any Device Fully responsive design and touch-friendly controls make it easy to use Tone Generator on desktop, tablet, or smartphone.

Frequently Asked Questions

Sine waves are the purest tone with no harmonics. Square waves have a rich, buzzy sound with strong odd harmonics. Triangle waves are similar to sine but slightly brighter. Sawtooth waves have all harmonics and sound bright and edgy — common in synthesizers.

A4 (440 Hz) is the international standard tuning reference pitch. Most orchestras and instruments tune to this note. It is the A above middle C on a piano keyboard.

Yes! You can sweep frequencies to test your hearing range. Most adults hear from about 20 Hz to 16,000–18,000 Hz, with the upper limit declining with age. Use low volume and avoid prolonged exposure to loud tones.