Online Tone Generator
Generate a pure sine, square, sawtooth or triangle tone from 20 Hz to 20 kHz. Test speakers, hearing and tuning. Download as WAV. Free frequency generator.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
440 Hz
⚠ Start with low volume, especially with headphones.
How to use Online Tone Generator
- 1Open Online Tone Generator — it works right on this page.
- 2Use the controls above.
- 3Copy or download the result. No sign up needed.
Questions
Is Online Tone Generator free?
Yes. Online Tone Generator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Online Tone Generator work on my phone?
Yes. Online Tone Generator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.