220 Hz Tone Generator
A free online tone generator producing a pure 220 Hz signal in your browser. A3 reference · low mid. Pick a waveform, hit play, and adjust the volume slowly.
What is 220 Hz used for?
220 Hz is the A below middle A. Useful as a reference for the bottom of the violin's range and the low note of an open A on guitar (an octave higher).
For a3 reference · low mid, set the volume to roughly 30% before pressing play. 220 Hz can sound deceptively quiet at full volume — always start low to protect your speakers and ears.
How to use it
Press the play button on the preview above to hear 220 Hz immediately. To customize the waveform (sine, square, sawtooth, triangle), tweak the volume curve, or add a second tone for beat-frequency comparison, open the full tone generator. The closest musical pitch to 220 Hz is approximately A3.
FAQs
Why does 220 Hz sound different on different speakers?
Speaker frequency response varies dramatically. Small monitors and laptop speakers struggle below about 80 Hz; tweeters distort above 16 kHz on cheaper systems. If 220 Hz sounds quiet, distorted, or buzzy, your hardware is likely the limit — not the tone itself.
Is it safe to listen to 220 Hz?
At reasonable volumes, yes. Sustained exposure to any frequency at high volume can damage your hearing. Always start at 0 volume, ramp up slowly, and don't wear headphones at full volume on this page.
What's the closest musical note to 220 Hz?
220 Hz corresponds to approximately A3. For exact tuning, use the chromatic tuner.