Work out your vocal range from two notes. Enter your lowest and highest note, and this vocal range calculator shows the range in semitones and octaves, the frequency of each note in hertz (Hz), and the closest of six common textbook voice types. It needs no microphone: pick two notes or type their frequencies, and it works in your browser.
Vocal Range and Voice Type Calculator
Enter your lowest and highest note. You get your range in semitones and octaves, the frequency of both notes in Hz, and the closest of six common textbook voice types.
Note and Hz converter
Middle C is C4. Tuning: A4 = 440 Hz.
Your result
No result yet
Enter your lowest and highest note, or try a common range, to see your range in semitones and octaves and the closest voice type.
semitones
- Lowest note
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- Highest note
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- Octaves
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- Notes in your range
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| Voice type | Textbook range | Shared with your range |
|---|
Notes use scientific pitch notation (middle C is C4) and equal temperament tuned to A4 = 440 Hz. The voice-type ranges are common textbook ranges: they describe voice types, not your voice, and a teacher also listens to tone and comfort. The calculator measures nothing. It works only from the notes you enter, in this browser.
Related Tools
How to Use the Vocal Range Calculator
You need two notes: the lowest and the highest you can sing clearly. The calculator does the counting.
- Find your two notes. Sing down to your lowest clear note and up to your highest clear note next to a piano, a keyboard app or a tuner, or use the vocal range test with your microphone. Write each note with its octave number, for example D3 and A4.
- Enter the lowest note. Pick the note name and the octave. If you only know the frequency, type it in the Hz box. The calculator picks the nearest note and shows how many cents your frequency is from it.
- Enter the highest note the same way. The plus and minus buttons move a note by one semitone.
- Choose the comparison: all six voice types, soprano, mezzo-soprano and alto, or tenor, baritone and bass.
- Press Calculate my range. After that, the result updates by itself when you change a note.
Tested your voice on another page? Open “Paste a result from another test” and paste the copied text. The calculator picks out the note names, for example the lowest steady note from the Deep Voice Test.
Understanding Your Results
Your vocal range is the distance from your lowest to your highest note, counted in semitones. A semitone is the step from one piano key to the next, black keys included. Twelve semitones make one octave, so the calculator divides the semitone count by 12 to get octaves.
- Semitones: the exact size of your range. D3 to A4 is 19 semitones.
- Octaves: shown two ways. 19 semitones is 1.58 octaves, or 1 octave plus 7 semitones. The calculator also names the interval: one octave and a perfect fifth.
- Frequency: the pitch of each note in hertz. D3 is 146.83 Hz and A4 is 440.00 Hz. Each octave doubles the frequency.
- Notes in your range: the semitones plus one, because both end notes count. D3 to A4 covers 20 notes.
- Closest voice type: the textbook range that shares the most semitones with yours. When two ranges share the same amount, the one whose middle is nearest the middle of your range comes first, and the result says so.
Voice Types and Vocal Ranges
Each of the six classical voice types has a common textbook range of two octaves. The calculator compares your notes with these ranges:
| Voice type | Common textbook range | Frequency | Span |
|---|---|---|---|
| Soprano | C4–C6 | 261.63–1046.50 Hz | 24 semitones |
| Mezzo-soprano | A3–A5 | 220.00–880.00 Hz | 24 semitones |
| Alto (contralto) | F3–F5 | 174.61–698.46 Hz | 24 semitones |
| Tenor | C3–C5 | 130.81–523.25 Hz | 24 semitones |
| Baritone | A2–A4 | 110.00–440.00 Hz | 24 semitones |
| Bass | E2–E4 | 82.41–329.63 Hz | 24 semitones |
Textbook ranges describe voice types in general, not limits for any one singer. Range alone does not decide a voice type.
A range match is not a voice type diagnosis. Voice teachers also listen to the tone of a voice, where it sits most comfortably (its tessitura) and where it changes register. Use the closest fit as a starting point for choosing songs and choir parts.
Common Vocal Ranges, Calculated
These are the note ranges visitors search for most often on this site, run through the calculator. Each row gives the size of the range and the closest textbook voice type in each group. D3 to A4, for example, is 19 semitones, and its closest matches are alto and tenor.
| Range | Semitones | Octaves | Soprano, mezzo or alto | Tenor, baritone or bass |
|---|---|---|---|---|
| D3–A4 | 19 | 1.58 (1 octave + 7 semitones) | Alto (contralto) | Tenor |
| E2–G5 | 39 | 3.25 (3 octaves + 3 semitones) | Alto (contralto) | Tenor |
| D3–E5 | 26 | 2.17 (2 octaves + 2 semitones) | Alto (contralto) | Tenor |
| A2–G4 | 22 | 1.83 (1 octave + 10 semitones) | Alto (contralto) | Baritone |
| F3–C6 | 31 | 2.58 (2 octaves + 7 semitones) | Mezzo-soprano | Tenor |
| A2–B4 | 26 | 2.17 (2 octaves + 2 semitones) | Alto (contralto) | Baritone |
| C2–C4 | 24 | 2 | Alto (contralto) | Bass |
| G2–A4 | 26 | 2.17 (2 octaves + 2 semitones) | Alto (contralto) | Baritone |
How to Get an Accurate Result
The result is only as accurate as the two notes you enter. These habits make them reliable:
- Warm up first. Hum or glide gently for a few minutes before you look for your lowest and highest notes.
- Count only clear notes. Use notes you can hold steadily for a second or two, not a crack, a creak or a squeak.
- Check the octave number. Middle C is C4, and the number changes at every C. B3 is one semitone below C4. A wrong octave number changes your range by 12 semitones.
- Use a reference. Match each note against a piano, a tuner or a microphone test instead of guessing. If your tuner shows a frequency, type it in the Hz box.
- Repeat on another day. Test again on a rested voice and keep the notes you reach both times.
Frequently Asked Questions
How do you calculate vocal range?
Count the semitones from your lowest note to your highest note, then divide by 12 to get octaves. D3 to A4 is 19 semitones, which is 1.58 octaves, or 1 octave and 7 semitones. The calculator does this count for any two notes from C0 to B8.
How many octaves is 33 semitones?
33 semitones is 2.75 octaves: two full octaves, which is 24 semitones, plus 9 more semitones, an interval called a major sixth. C3 to A5 is one example of a 33-semitone range.
What range is F3 to C6?
F3 to C6 is 31 semitones, or 2.58 octaves: two octaves and a perfect fifth. F3 is 174.61 Hz and C6 is 1046.50 Hz. Of soprano, mezzo-soprano and alto, it fits mezzo-soprano best. Of tenor, baritone and bass, it fits tenor best.
Why do some calculators give a different number of octaves?
Some count the notes instead of the steps between them. D3 to A4 has 20 notes but spans 19 semitones. Others round to whole octaves or number the octaves differently. This calculator counts the semitones between the two notes and uses middle C = C4.
Can a vocal range calculator tell my voice type?
It tells you which textbook range your notes overlap most, not your voice type. Two singers with the same range can have different voice types, because teachers also judge tone, comfort and register changes. Treat the closest fit as a starting point.
Is there a vocal range calculator for female voices?
Yes, and the maths is the same for every voice. Choose “Soprano, mezzo, alto” under Compare with, and the result shows the closest of those three textbook ranges. The calculator never guesses who you are. You choose the group.
Does the calculator need a microphone?
No. You choose or type the notes, and the calculator works them out in your browser. It does not send or store your notes. To find your notes with a microphone first, use the vocal range test, then enter the two notes here.
Method, Sources and Author
How the calculator works. Each note becomes a MIDI note number (middle C = C4 = 60, A4 = 69). The range in semitones is the difference between the two numbers, and octaves are semitones divided by 12. Frequencies use equal temperament: f = 440 × 2(n − 69) / 12 Hz. A typed frequency is matched to the nearest note, and the gap is shown in cents (100 cents = 1 semitone).
Standards. Tuning pitch A4 = 440 Hz (ISO 16). Octave numbers follow scientific pitch notation.
Voice-type ranges. Soprano C4–C6, mezzo-soprano A3–A5, alto F3–F5, tenor C3–C5, baritone A2–A4 and bass E2–E4 are common textbook ranges. The closest fit is the range that shares the most semitones with yours.
Testing. The maths was checked against the standard note-frequency table and by automated tests on every note from C0 to B8.
Not measured. The calculator does not listen to your voice and does not judge tone, health or singing quality.
Author. Written by John for Vocal Range Tester. Last updated: 30 September 2026.