Free Online Tool
Voicecel Voice Test
Measure your voice frequency (F0) instantly with this free voicecel test. 100% in your browser — no signup, no uploads, private results in seconds.
Your Voice Analysis
Click Start and speak naturally
Vocal Range Types
Deep Bass
Bass
Baritone
Tenor
Contralto
Mezzo-Soprano
Soprano
This tool measures the fundamental frequency (F0) of your speaking voice for informational purposes only. It is not a medical or clinical assessment. Results may vary with microphone quality, background noise, and recording distance.
How It Works
- 1
Click Start and allow microphone access
- 2
Speak naturally for a few seconds (read the prompt text if you need ideas)
- 3
The analyzer measures your fundamental frequency in real time
- 4
Review your vocal range type and frequency statistics
What Is the Voice Frequency Analyzer?
The Voice Frequency Analyzer is a free online tool that measures the fundamental frequency (F0) of your speaking voice — the rate at which your vocal folds vibrate, measured in Hertz. Speak into your microphone for a few seconds, and the analyzer computes your median F0 and identifies your vocal range type, from Deep Bass to Soprano.
Fundamental frequency is the acoustic building block of pitch. It is what distinguishes a deep voice from a high one, and it varies naturally by age, sex, and vocal anatomy. The analyzer estimates F0 in real time using the scientifically validated YIN algorithm and summarizes it with a full statistical breakdown — mean, range, standard deviation, and confidence.
All audio processing happens locally in your browser via the Web Audio API. No recordings are uploaded or stored — your privacy is guaranteed. You can save or share your result, and revisit the page with a shareable URL that pre-loads your exact Hz reading.
Vocal Range Types Explained
Deep Bass
Below 85 Hz
An exceptionally deep, rare voice. Very few adults speak naturally in this range, which is associated with the lowest male voices. If you land here, your voice sits at the extreme low end of the human speaking spectrum.
Bass
85 – 110 Hz
A low, resonant male voice. Bass voices project depth and authority, and sit well below the average adult male speaking frequency of about 120 Hz. Common among radio hosts and narrators.
Baritone
110 – 140 Hz
The most common male voice type. Baritone sits near the average adult male speaking frequency and spans a deep-to-mid range that projects warmth and reliability.
Tenor
140 – 175 Hz
A higher male voice type, also shared by some lower female voices. Tenor sits above the male average and just below the female average speaking frequency.
Contralto
175 – 210 Hz
The lowest female voice type. Contralto sits at the boundary between male and female speaking ranges, giving it a distinctively rich, low character.
Mezzo-Soprano
210 – 260 Hz
A mid-range female voice, near the average adult female speaking frequency of about 210 Hz. Mezzo-soprano is the most common female vocal range.
Soprano
Above 260 Hz
A higher female voice type. Soprano sits above the average female speaking frequency and represents the highest common speaking range.
Tips for an Accurate Reading
- 1Find a quiet room. Background fans, traffic, or music can interfere with pitch detection. The cleaner the signal, the more accurate your reading.
- 2Use a real microphone if you have one. A USB or headset mic placed 10–20 cm from your mouth gives cleaner input than a built-in laptop mic.
- 3Speak naturally and continuously. Avoid deliberately lowering or raising your pitch — use a normal conversational tone.
- 4Warm up first. Your voice is noticeably higher right after waking up. Speak for a few minutes before testing for a more representative reading.
- 5Run it more than once. Hydration, posture, and emotion can shift pitch by 5–15 Hz. Average two or three readings for a more reliable result.
Privacy First — Why Your Voice Never Leaves Your Browser
Voice data is biometric data. Many free voice tools on the web silently upload your audio to remote servers for processing — you have no idea where your voice sample ends up. We took a different path: every byte of audio stays inside your browser tab. There is no upload endpoint, no cloud transcription, and no analytics pixel watching your microphone. When you close the tab, every trace of your recording is gone. That's why this voicecel test runs entirely on the Web Audio API and the YIN algorithm locally — you get instant results, and your voice never crosses a network boundary.
How the YIN Pitch Detection Algorithm Works
Under the hood, this voicecel test uses the Web Audio API to sample your microphone at your device's native sample rate — typically 44.1 kHz or 48 kHz. The YIN algorithm, developed by Alain de Cheveigné and Hideki Kawahara at the Ircam research institute, is one of the most accurate methods for estimating the fundamental frequency of human voice. Unlike simple autocorrelation, YIN uses a difference function that drops to zero at the signal's period, making it robust against the harmonics and noise inherent in speech. We compute the median across hundreds of samples collected during your recording to filter out clicks, breaths, room noise, and silent frames — giving you a stable, repeatable F0 reading.
Frequently Asked Questions
A voicecel test measures the fundamental frequency (F0) of your speaking voice and maps it to a vocal range type — from Deep Bass to Soprano. It's another name for a voice frequency analyzer: you speak into your microphone, the tool estimates your median F0 in Hertz, and you get a shareable result in seconds. Everything is processed locally in your browser.
It measures the fundamental frequency (F0) of your speaking voice in Hertz (Hz) — the rate at which your vocal folds vibrate. Based on your median F0, it then identifies your vocal range type: Deep Bass, Bass, Baritone, Tenor, Contralto, Mezzo-Soprano, or Soprano.
The analyzer uses your browser's microphone and the YIN pitch-detection algorithm to estimate F0 in real time. YIN is a scientifically validated method for fundamental-frequency estimation. All processing happens locally — no audio leaves your device.
Based on your median speaking frequency, the analyzer classifies your voice into a standard vocal range type: Deep Bass (below 85 Hz), Bass (85–110 Hz), Baritone (110–140 Hz), Tenor (140–175 Hz), Contralto (175–210 Hz), Mezzo-Soprano (210–260 Hz), or Soprano (above 260 Hz).
The underlying YIN algorithm is scientifically validated for estimating fundamental frequency. Accuracy depends on microphone quality, background noise, and speaking consistency. It is designed as an informational tool, not a clinical voice assessment.
Yes. This analyzer spans the full human speaking range and classifies voices of any gender. Adult male voices typically fall between 85–180 Hz, while adult female voices typically fall between 165–255 Hz.