What are the benefits of Tone Generator?

Targets tone generator and frequency sound searches with instant Hz-based playback.. Covers audio checks, speaker tests, tuning practice, and learning use cases.. Audio is generated in the browser, so no file preparation or upload is needed..

Is Tone Generator free?

Yes, it is completely free to use, and no registration is required. Tool processing happens entirely in your browser, and your input content and uploaded files are not sent to a server. Our first-party improvement metrics use no cookies, visitor IDs, or session IDs and store only normalized page paths and daily counts for fixed event IDs.

Tone Generator

Generate pure tones from 20Hz to 20kHz in real time with sine, square, triangle, and sawtooth waves

440

サイン波

周波数 440 Hz

20 20k

対数スケール（低周波を細かく調整できます）

波形

音量 50%

音階プリセット Musical Notes

ソルフェジオ周波数 Solfeggio Frequencies

テスト用トーン Utility Tones

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About Tone Generator

Tone Generator Online plays a selected frequency in Hz directly in the browser. It can generate sine, square, triangle, and sawtooth waves for speaker checks, channel tests, hearing checks, tuning practice, and learning how frequencies sound.

Single-frequency tones are useful for quick checks, while sweep-style testing helps review response across low and high ranges. Because it runs instantly in the browser, it works well for classrooms, studios, desk checks, and lightweight troubleshooting. Start at a low volume to protect your ears and equipment.

Everything runs locally in your browser, so your text, numbers, or files are not uploaded to a server. No account is required, and the tool is free to use on desktop or mobile.

How to use Tone Generator

Choose frequency in Hz, waveform, and volume.
Play the tone and try presets or sweep mode if needed.
For speaker or hearing checks, keep volume moderate and test briefly.

Benefits of Tone Generator

Targets tone generator and frequency sound searches with instant Hz-based playback.
Covers audio checks, speaker tests, tuning practice, and learning use cases.
Audio is generated in the browser, so no file preparation or upload is needed.