Is Tone Generator free to use?

Yes, Tone Generator is completely free to use. No signup or account is required. All processing runs in your browser, so your data stays private.

Is my data safe with Tone Generator?

Absolutely. All processing happens locally in your browser. Your files and data are never uploaded to any server, ensuring complete privacy and security.

Audio Tools

Tone Generator

Generate pure audio frequencies, test speakers, and run custom sweeps

Tone & Frequency Generator

Synthesizes audio waveforms and tests local outputs client-side

Frequency

440 Hz

Tuning Frequency (20 Hz - 20 kHz)

50%

Quick Frequency Presets

Hearing Safety Warning

Please turn down the volume of your headphones or speakers before pressing play. High frequency tones can cause auditory fatigue or hearing damage. Keep tones at moderate volumes, especially when sweep testing.

About Tone Generator

Generate customized sound waves (Sine, Square, Triangle, Sawtooth) across the human hearing range (20Hz - 20kHz). This browser utility synthesizes frequencies using Web Audio API and provides a live Oscilloscope plotting the wave shape.

Perfect for tuning musical instruments, checking speaker frequency responses, running sound sweeps, or checking hearing thresholds.

How to Use Tone Generator

1Choose your target wave type (Sine, Square, Triangle, Sawtooth) from the top bar.
2Adjust the frequency slider or input a precise value (e.g. 440 Hz for A4).
3Use fine-tuning buttons to nudge the frequency by 10 Hz.
4Switch to Sweep mode to define starting/ending frequencies and a sweep duration.
5Click 'Play Tone' or 'Trigger Sweep' to begin audio synthesis. Adjust the volume slider safely.

View all Audio Tools

Audio Tools