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Turn your volume down first, then start the sweep. A pure sine tone rises from 20 Hz to 20 kHz over 40 seconds. Press the button the moment you stop hearing it, and the tool shows the highest frequency you heard, then compares it with published data from healthy adults of your age. The tone is generated live in your browser; nothing is recorded or uploaded.
Use good wired headphones in a quiet room for the most useful result. This is a quick check for producers and engineers, not a medical hearing test.
Young people with healthy hearing can usually hear from about 20 Hz up to somewhere between 16 and 20 kHz. The top end falls with age: in a 2021 study of healthy adults, about half of ears aged 21 to 30 still responded at 20 kHz, while no ears aged 51 to 60 did.
Hearing at very high frequencies declines gradually with age and with noise exposure, starting for many people in their thirties. Your equipment matters too: many laptop and phone speakers, some earbuds and some Bluetooth connections can’t reproduce the top octave, so the device may be the limit rather than your ears.
It gives a rough estimate of your upper frequency limit, not a clinical result. Speakers, headphones, volume, background noise and your reaction time all affect it. An audiologist measures hearing with calibrated equipment at set levels; see one if you notice hearing changes, ringing or muffled sound.
Yes, if you keep the volume low. Turn your device down before you start, raise the tone volume slowly only until it is just audible, and never turn it up to chase a tone you can’t hear. Stop if anything feels uncomfortable.
The top octaves carry air, cymbal shimmer and sibilance. If your hearing or monitoring rolls off up there, you may push too much high end into a mix. Knowing your range helps you lean on a spectrum analyzer and reference tracks when judging the very top.