Tone Generator

Generate pure audio tones from 20 Hz to 20 kHz with sine, square, triangle and sawtooth waveforms. Used for speaker testing, hearing checks, and audio experiments.

100% free No uploads Runs in your browser No signup

Tone generator

Frequency: 440 Hz

≈ A4

Volume: 30%

Waveform

Start at low volume — pure tones at high levels can damage speakers and hearing. The 15 kHz preset is a classic test for tweeter response and (for younger ears) a "mosquito" ringtone.

How to use the Tone Generator

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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