Hz frequency chart

How to read this Hz chart

An Hz chart maps numbers to experience: each row covers a slice of the hearing range, describes what a tone there sounds like, and names the jobs it suits. Frequencies double every octave, so the jump from 100 Hz to 200 Hz sounds like the same musical distance as 1000 Hz to 2000 Hz even though the second gap is ten times wider in hertz.

Use the rows below as a listening map. Start in the middle around 440 Hz, work downward until the tone turns to rumble, then climb upward until it thins into hiss. The two ends teach you the limits of your own ears and your own speakers in under a minute, and repeating the tour monthly shows how stable those limits are.

Why octaves rule the chart

Every octave doubles the frequency: 110, 220, 440, 880 Hz climb in equal musical steps while the hertz gaps explode from 110 to 440. That is why the chart rows widen as numbers grow — equal perception needs exponential numbers, and a linear scale would crush all music into the left margin.

This doubling rule also explains why sweep tools offer logarithmic glides: equal time per octave feels like a steady climb, while linear motion races through bass and crawls through treble. Try the 220 Hz tone against the 440 Hz tone to hear one perfect octave, then compare 1000 Hz with 2000 Hz territory to feel the same distance higher up.

The full range, low to high

Low frequencies carry power and body, middle frequencies carry voices and melody, and high frequencies carry detail and air. Small laptop speakers typically start fading below 200 Hz and many adults stop hearing much above 15–16 kHz, so your personal results will differ from the nominal 20 Hz to 20 kHz limits.

Using the chart for quick tests

For a speaker check, play the rows in order from low to high and note where the sound appears, where it peaks, and where it vanishes — those three points sketch your system response. For a personal hearing sketch, repeat the climb in a quiet room at a fixed comfortable volume and note the highest tone you can still detect; treat the result as casual screening, not a diagnosis.

Each example tone in the table has a dedicated page with a player, the nearest musical note, and testing tips. Open any frequency page for the full detail, or browse the Solfeggio frequencies hub for the scale popular in meditation music.

When the chart disagrees with your ears

No chart survives contact with a real room unchanged. A tone the table calls clearly audible may vanish in your null spot, while a supposedly faint whistle screams through a resonant hallway. Trust the listening over the label: the chart describes typical perception on neutral equipment, and your space, hardware, and ears write the footnotes.

If one side consistently underplays the other across several rows, swap the headphone sides or speaker positions before concluding anything. Problems that follow the swap live in the equipment; problems that stay with the ear deserve a professional opinion rather than more self-testing at home.