TestTones

Play a pure 18,000 Hz tone instantly — test speakers, subwoofers and your hearing

Home Test Tone Frequencies 18,000 Hz Test Tone

18,000 Hz Test Tone

Play a pure 18,000 Hz tone instantly in your browser — no app, no sign-up, nothing to download. It is generated live as a mathematically exact sine wave, preset and ready. Press Play to hear it, and use the controls to change waveform, channel and volume.

18000.0 Hz
C#10
1 Hz 100 1k 10k 22k Hz
Ready
Waveform
FFT Spectrum

Waveform & Channel

Volume & Duration

50%
Listen safely

Start with the volume low and raise it slowly. This is near the very top of human hearing. A minority of adults hear it at all, and your speakers or earbuds also have to be capable of reproducing it. Silence here is common and usually not a concern. Loud tones of any frequency can harm hearing over time, and very low tones at high volume can strain speakers — keep levels comfortable and take breaks.

What is 18,000 Hz?

18,000 Hz is a tone in the very high treble region — near the top of human hearing. Its nearest musical note is C#10 (about +25 cents away), and its sound wave is roughly 0.019 m long in air. Because it is a pure sine wave, it contains only this one frequency with no harmonics, which is exactly what you want for testing and calibration.

18,000 Hz is very near the top of human hearing. A minority of adults hear it at all; children and teens are far more likely to. Both your ears and your speakers have to be capable to reproduce it.

What you can use a 18,000 Hz tone for

  • Informal 'hearing age' / high-frequency hearing checks
  • Testing tweeter and headphone treble response

Can you hear 18,000 Hz?

This is near the very top of human hearing. A minority of adults hear it at all, and your speakers or earbuds also have to be capable of reproducing it. Silence here is common and usually not a concern. If you are testing your hearing, do it at a modest, consistent volume in a quiet room and compare both ears. For a full walkthrough, see our at-home hearing range test guide. Remember this is a self-check, not a medical diagnosis.

Frequently asked questions

What is a 18000 Hz test tone?

A 18000 Hz test tone is a pure sine wave vibrating 18,000 times per second. It falls in the very high treble range (near the top of human hearing) and its nearest musical note is C#10. You can play it instantly above to test audio equipment or your hearing.

Can everyone hear 18000 Hz?

This is near the very top of human hearing. A minority of adults hear it at all, and your speakers or earbuds also have to be capable of reproducing it. Silence here is common and usually not a concern.

What note is 18000 Hz?

The nearest equal-tempered note to 18000 Hz is C#10 (about +25 cents away).

Is it safe to play 18000 Hz?

Yes, at a sensible volume. Start low and raise it gradually. Very loud tones of any frequency can harm hearing or, at very low frequencies, over-drive speakers — so keep levels comfortable and take breaks.

Explore more test tones

Need a different pitch? Browse every test-tone frequency, or jump to a nearby one:

16,000 Hztest tone 17,000 Hztest tone 19,000 Hztest tone 20,000 Hztest tone

You can also use the full test tone generator for frequency sweeps, speaker balance and polarity checks, and the tinnitus matcher.