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Tone Generator
tone · frequency · hz · sound · test
440 Hz
20 Hz20 kHz
⚠ Start at a low volume. High frequencies and volumes can damage hearing and speakers.
How to use
- 1
Set the frequency.
- 2
Choose a waveform and volume.
- 3
Press play to hear the tone.
FAQ
Is this tool free?
Yes — no sign-up, no installation, completely free to use right away.
What is this tool?
This tool plays pure tones at the exact frequency you choose. It's useful for testing speakers and headphones, tuning instruments, or hearing checks. Everything is generated in your browser.