The test plays 9 pure tones, from 16kHz (very high) down to 500Hz (low), each for about 1.5 seconds. After each tone you tap whether you heard it. Tones are synthesized live in your browser with the Web Audio API — no audio files, nothing uploaded.
Age-related hearing loss (presbycusis) almost always starts at the top: the tiny hair cells in the cochlea that detect high frequencies wear out first. Your result maps the highest tone you could not hear to a typical hearing age. Because a browser cannot calibrate your headphone volume, this is a fun awareness test — not a medical diagnosis.
Yes — no account, no signup, unlimited use.
No. It's an awareness tool for fun — see a hearing professional for a real diagnosis.
Because age-related hearing loss starts at the highest frequencies, so the top end reveals the most.
It's an estimate based on the highest tone you couldn't hear, compared with typical age averages.
Yes — any browser. Headphones are strongly recommended.