Online Tone Generator
Generate a pure tone at any frequency to test speakers, headphones or your hearing. Choose the waveform and volume. Everything runs in your browser.
440 Hz
⚠ Start at a low volume to protect your ears and speakers. 🔒 Generated in your browser.
🔒 Tout se passe dans ton navigateur — rien n'est envoyé ni stocké.
Questions fréquentes
- What can I use a tone generator for?
- Testing speakers and headphones, checking the range of your hearing, tuning instruments, or producing a reference frequency.
- What waveforms are available?
- Sine, square, sawtooth and triangle. Sine is the cleanest pure tone; the others are richer in harmonics.
- Is it safe for my ears?
- Start at a low volume, especially at high frequencies. The tone is generated locally in your browser and nothing is recorded.