Play any tone from 1 Hz to 20,000 Hz right in your browser—no download, no setup. Choose a pitch, a waveform (sine, square, sawtooth, triangle), and volume, then press play. The tool runs entirely client‑side, so the sound starts instantly.

The generator lets you test speakers, headphones, or your own hearing. Sweep through frequencies to spot buzzes, rattles, or imbalances. Use 440 Hz for standard A tuning, or explore ranges like 20 to 60 Hz for subwoofers or 200 to 2 kHz for voice. The sine shape gives a clean tone, while the other shapes add harmonics for fuller sound.

You can stack up to eight tones, each with its own volume and waveform, or share a link that preserves your settings. The tool works on phones, tablets, and computers, and continues to play even if your internet drops.

Keep the volume low—high tones can damage ears and speakers. Stop if the sound feels sharp or painful.