Deep Voice Checker

Measure your actual pitch in hertz — not how deep you think you sound.

Tap the mic, then hold a steady “aaaah” in your normal speaking voice.

The reading happens in this tab. Nothing is recorded, stored or uploaded, and the microphone is released the moment the measurement ends.

About the Deep Voice Checker

Your voice never sounds the same to you as it does to everyone else. What you hear is partly conducted through the bones of your skull, which flatters the low end — so people routinely think they sound deeper than a recording says they are. This tool skips the opinion and measures the number: your fundamental frequency, in hertz, worked out from the actual period of your vocal folds. Hold one steady vowel for a few seconds and you get a reading plus the range it falls into. It runs on the Web Audio API inside this tab, so nothing is recorded and nothing is uploaded — the microphone closes the moment the measurement finishes.

How to use it

  1. 1Find somewhere reasonably quiet and tap the microphone button. Your browser will ask for permission the first time.
  2. 2Hold a steady “aaaah” at your normal speaking pitch — not your lowest possible growl — for the few seconds the timer counts down.
  3. 3Read your result in hertz, and see where it sits on the scale from very deep to high.

Why use it

A stable number, not a flicker
The reading is the median of hundreds of measurements taken across the whole recording, so one cracked note or a passing car doesn't decide your result.
Measures the fundamental
Autocorrelation finds the actual repeating period of your voice rather than the loudest overtone, which is what makes cheaper detectors report you an octave off.
Nothing recorded
No audio is saved, sent or held. The page reads the live waveform and releases the microphone when the timer ends — no lingering recording indicator.
Free, no account
Measure as many times as you like. Morning versus evening is a genuinely interesting comparison.

FAQ

What counts as a deep voice?

For adult men the typical speaking range is roughly 85 to 180 Hz, and for adult women roughly 165 to 255 Hz. Anything under about 110 Hz is properly deep, and under 85 Hz is deeper than most bass singers speak. Children and teenagers sit higher, often above 250 Hz.

Why is my result different each time?

Because your voice genuinely is. Pitch drifts with the time of day — most people are lowest just after waking — and with hydration, tiredness, caffeine and whether you have been talking all morning. Swings of 10 to 20 Hz across a day are normal. For a fair comparison, measure at the same time of day.

Should I use my speaking voice or go as low as I can?

For a meaningful number, use your normal speaking pitch. Pushing into your lowest register measures the bottom of your range, not the voice people actually hear from you — and forcing it down is a good way to strain your throat.

It says it heard sound but couldn't measure. Why?

Talking gives it nothing to lock onto — consonants have no clear pitch. Hold one continuous vowel instead. Background noise, a distant laptop microphone, and Bluetooth headsets that heavily process audio all make it harder; getting closer to the mic fixes most cases.

Is the reading accurate?

The maths is sound and the number is a real measurement, but the microphone is the weak link. A laptop or phone mic rolls off the low frequencies and a Bluetooth headset compresses them, so expect a few hertz of error and treat the band you land in as more meaningful than the exact digit. A wired or USB microphone gives the tightest result.

Can I make my voice deeper?

Not the fundamental itself — that is set by the size and mass of your vocal folds. What you can change is how you use it: speaking from a relaxed, open throat rather than a tight one, breathing from the diaphragm, and not pushing your pitch up when you get nervous all make your voice read as fuller and more resonant. Forcing an artificially low pitch does the opposite and damages your voice over time.

Do you keep the audio?

No. There is no recorder in the page — it reads the live waveform frame by frame and discards each frame immediately. Nothing is written to disk and no request is made. You can confirm it in your browser's network panel.