Alto Range Test
Sing your lowest and highest comfortable notes below. In about 30 seconds you'll see your exact range on a piano — and whether it matches the alto range of F3–F5.
30 seconds · Free · No login
Audio stays in your browser
How It Works
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1. Allow Microphone
Grant mic access in your browser — no app download needed.
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2. Sing Your Range
Sing your lowest and highest comfortable notes. Takes about 30 seconds.
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3. See Your Results
Instantly see your vocal range, voice type, and how you compare to famous singers.
What Counts as an Alto
The alto is the lowest common female voice type. In the classification VocalCheck uses, the alto range runs from F3 up to F5. The alto’s identity lives in its bottom half: full, resonant notes below middle C that most sopranos and many mezzos simply can’t produce with body. The trade-off is a top that exists but isn’t the voice’s home.
Famous altos include Cher and Toni Braxton — voices you recognize in one note precisely because that dark, warm color is uncommon.
How This Test Works
- Allow the microphone when prompted (audio is processed entirely in your browser and never uploaded).
- Sing your lowest comfortable note and hold it for 5 seconds. For altos this is the money note — sing it with full voice, not vocal fry.
- Sing your highest comfortable note the same way.
- See your result: your exact range on a piano keyboard, your voice type classification, and famous singers with a similar range.
If your range centers on F3–F5 and your low notes carry real volume, your result will come back alto.
Alto vs. Mezzo-Soprano: Where the Line Really Is
Most female singers who “can sing low” are mezzo-sopranos, not altos — mezzo is the most common female voice type, and the two ranges overlap heavily. The difference isn’t whether you can touch F3; it’s what F3 sounds like when you do.
Signs that point to alto:
- Notes between F3 and A3 sound rich and speak easily, without breathiness
- Your speaking voice is noticeably low for a woman
- Melodies that sit above C5 for long stretches wear you out
- In group singing you instinctively drift to the harmony below the melody
Signs that point to mezzo-soprano: a strong middle register, a usable but thin low F3, and more comfort at the top than a true alto has. Either result is worth knowing — repertoire chosen for the wrong voice type is the most common reason singing feels harder than it should. Our alto range guide goes deeper on what the alto voice does best.
After the Test
If you tested as an alto, stop transposing songs up to match recordings — take them down instead and let your lower register do the work. Alto-friendly keys usually sit two to four semitones below the original pop recording. For context on how your range compares to well-known voices, browse our celebrity vocal ranges table.
Retest every 4–8 weeks if you’re training. The alto low register in particular develops noticeably with consistent technique work, and the shareable result URL gives you an easy progress log.
Frequently Asked Questions
- The alto range typically spans from F3 to F5 — about two octaves, sitting a fourth or fifth below the soprano. Altos are the lowest common female voice type, known for a rich, warm middle register and strong low notes.
- In everyday use, yes — 'alto' is the common name for the low female voice. Strictly, 'alto' is a choral part name and 'contralto' is the voice type. True contraltos, whose voices sit even lower, are the rarest female voice type.
- Check your low register first. If notes around F3–A3 sound full and easy — not breathy — and your voice tires when a song sits above C5 for long, alto is likely. If your strength is the middle register and F3 feels like your floor rather than a comfortable note, you're probably a mezzo-soprano.
- True low-voiced altos are relatively rare — most female voices classify as mezzo-soprano. That rarity is an advantage: altos are consistently in demand for harmonies, choirs, and any music that needs depth and warmth below the melody line.