Vocal Range Test — Find Voice Type
Find your vocal range and voice type with private microphone pitch detection across sustained notes. Nothing is uploaded or stored. Free in your browser.
How it works
Real-time time-domain autocorrelation (NSDF) extracts fundamental singing frequency (F0) from live microphone audio, computing vocal bounds, semitone span, and classical Fach voice classification completely client-side with zero cloud transmission.
Discover your vocal range and singing classification with real-time acoustic pitch tracking. Powered by time-domain autocorrelation DSP with sub-sample peak interpolation, this test identifies the lowest and highest musical notes you can comfortably sustain, computes your overall span in semitones and octaves, and classifies your vocal profile into classical Fachs.
The Six Classical Voice Classifications
In classical choral and operatic traditions, singers are classified by the natural resonant acoustic boundaries of their vocal folds and vocal tract:
| Voice Classification | Typical Range | MIDI Bounds | Tessitura | Acoustic Description |
|---|---|---|---|---|
| Bass | $E_2 - E_4$ (82.4 – 329.6 Hz) | MIDI 40 – 64 | $G_2 - C_4$ | Deep, resonant chest voice with heavy harmonic weight and dark overtones. |
| Baritone | $A_2 - A_4$ (110.0 – 440.0 Hz) | MIDI 45 – 69 | $C_3 - E_4$ | Warm, versatile mid-register; the most common male singing voice. |
| Tenor | $C_3 - C_5$ (130.8 – 523.3 Hz) | MIDI 48 – 72 | $E_3 - G_4$ | Bright, ringing, agile high male voice capable of soaring dramatic belts. |
| Contralto | $F_3 - F_5$ (174.6 – 698.5 Hz) | MIDI 53 – 77 | $A_3 - D_5$ | Rare, rich, velvety female chest resonance with warm depth. |
| Mezzo-Soprano | $A_3 - A_5$ (220.0 – 880.0 Hz) | MIDI 57 – 81 | $C_4 - F_5$ | Full, passionate female voice bridging warm mid-tones and brilliant top notes. |
| Soprano | $C_4 - C_6$ (261.6 – 1046.5 Hz) | MIDI 60 – 84 | $E_4 - A_5$ | Highest female register; crystalline, agile, and effortlessly piercing. |
How to Test Your Vocal Range
- Grant Microphone Access: Click Start Vocal Test (Mic) and allow access. Audio processing runs 100% in your local browser memory.
- Find Your Lowest Note (Step 1):
- Sing or hum downward slowly on a comfortable vowel (such as “Ah”, “Oo”, or “Mmm”).
- Hold your lowest sustained note for 1 to 2 seconds without forcing or vocal fry gravel.
- Click Lock Low Note & Proceed or allow auto-lock to capture your lowest pitch.
- Find Your Highest Note (Step 2):
- Sing upward smoothly into your comfortable upper register (head voice or controlled falsetto).
- Hold your highest clear note for 1 to 2 seconds without straining your throat.
- Click Lock High Note & See Results.
- Inspect Your Vocal Profile:
- Review your total range span in octaves and semitones on the interactive visual piano roll.
- Compare your span against classical Fach overlap scores and matched famous vocalists.
- Click any piano key or note badge to play acoustic reference tones.
Frequently asked questions
How does the microphone pitch detector measure my vocal range?
The test uses real-time Normalized Square Difference Function (NSDF) autocorrelation to capture the fundamental frequency (F0) of your vocal folds vibrating. When you sing a sustained vowel like "Ah" or "Oo", the algorithm extracts the exact periodic pitch, maps it to the nearest 12-tone equal temperament musical note and MIDI index, and calculates your total span in semitones and octaves.
What are the six standard classical voice types (Fachs)?
Classical vocal pedagogy categorizes singing voices into six primary voice types based on range and tessitura: Bass (deep male, ~E2 to E4), Baritone (mid-range male, ~A2 to A4), Tenor (high male, ~C3 to C5), Contralto (deep female, ~F3 to F5), Mezzo-Soprano (mid-range female, ~A3 to A5), and Soprano (high female, ~C4 to C6).
What is the difference between vocal range and tessitura?
Your vocal range encompasses every single note you can produce, from your lowest vocal fry scrape to your highest head voice or whistle register note. Tessitura refers to the most comfortable, resonant, and sustainable 1.5 to 2 octaves of your range where your voice sounds most natural, timbre is richest, and singing causes no vocal fatigue.
Does this vocal test upload or record my audio?
No. Audio from your microphone is processed strictly inside your browser local memory using the Web Audio API. Zero audio files, voice recordings, or analytical telemetry are ever uploaded or transmitted across the network. When you stop the test or navigate away, microphone access is immediately released.
How should I warm up before taking the vocal range test?
Never test your extreme lowest or highest limits with a "cold" voice. Spend 3 to 5 minutes gently humming, performing lip trills (lip bubbles), and doing gentle descending and ascending sirens on an open "Ng" or "Oo" vowel. When singing your notes into the microphone, stand upright with relaxed neck and jaw muscles, maintain steady diaphragmatic breath support, and stop immediately if you feel tension or straining in your larynx.