How it's measured
Your browser generates each tone live using the Web Audio API — no audio files involved. After a calibration tone at 1000Hz (a comfortable, easy-to-hear reference), the test steps upward through 8,000 → 10,000 → 12,000 → 14,000 → 16,000 → 17,000 → 18,000 → 19,000 → 20,000Hz. The test ends at your first "can't hear it," and your result is the last frequency you confirmed.
Frequently asked questions
Why does my result depend on my headphones?
Cheap speakers and earbuds often can't reproduce very high frequencies accurately, which can make your result look worse than your real hearing. Good headphones give a far more reliable reading.
Is hearing loss at high frequencies normal with age?
Yes, to some degree — the ability to hear very high frequencies commonly narrows gradually with age, even with otherwise normal hearing. This test is informal, not a substitute for a real exam.
Is this a medical hearing test?
No — it's a rough self-check using your own device's speakers, not a calibrated audiometric exam. See an audiologist for real concerns.