Use this free vocal range calculator to turn your lowest and highest notes into a clear measurement. Pick two notes and you get the span in octaves and semitones, the interval name, the frequency of each note in hertz, the number of piano keys and the closest of the six voice types. It works without a microphone and runs entirely in your browser.
Vocal Range Calculator
Choose the lowest and highest notes you can sing to calculate your vocal range in octaves and semitones, the interval between the notes, their frequencies and the closest voice type.
Choose two notes to calculate your vocal range.
- Octaves
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- Semitones
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- Interval
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- Piano keys
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- Lowest frequency
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- Highest frequency
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- Frequency ratio
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- Closest voice type
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Your range compared with the six voice types
Voice type range Your range · Match = how closely your range lines up with each type
Calculated with A4 = 440 Hz and equal temperament. Range is one part of voice type: tone colour and tessitura (where your voice feels most comfortable) matter too.
Related Tools
- Vocal Range Test
Don't know your notes yet? Sing them into the microphone to find your lowest and highest notes.
- Voice Type Test
Get a full voice-type result, with your usual choir part.
- Octave Range Test
Measure how many octaves you can sing, live with the microphone.
- Singer Comparison Tool
Compare your calculated range with well-known singers.
- Voice Frequency Test
Measure the pitch of your speaking voice in Hz.
- Deep Voice Test
Check how low your voice can go.
How to Use the Vocal Range Calculator
- Choose your lowest note: the lowest note you can sing clearly, not a growl or vocal fry.
- Choose your highest note: the highest note you can sing with control, without shouting or straining.
- Read the result. It updates as soon as you change a note, and Calculate my range recalculates it.
- Press Copy result to save the numbers, or Copy link to this result to share a link that opens the calculator with your notes already filled in.
Each note in the list shows its frequency, and black keys show both names (for example A#3 / Bb3). If you don’t know your notes yet, find them first with the vocal range test, then bring them back here for the full breakdown.
How Vocal Range Is Calculated
The calculator counts the semitones between your two notes. A semitone is one step on a piano, from one key to the very next, including black keys. Every other number follows from that count:
- Octaves = semitones ÷ 12, because an octave has 12 semitones.
- Frequency of each note = 440 × 2(n − 69) ÷ 12 Hz, where n is the note’s number and A4 (number 69) is 440 Hz. This is standard equal-temperament tuning.
- Frequency ratio = highest frequency ÷ lowest frequency. It doubles with every octave: one octave is 2 : 1, two octaves 4 : 1, three octaves 8 : 1.
- Piano keys = semitones + 1, because both end notes count.
Worked example, F3 to C6: F3 is note 53 and C6 is note 84, so the range is 31 semitones. 31 ÷ 12 = 2.58 octaves, which is 2 octaves plus a perfect fifth. F3 is 174.6 Hz and C6 is 1,046.5 Hz, a ratio of 5.99 : 1.
Vocal Range Examples
These examples were worked out with the calculator. The closest voice type uses the same matching as the tool: how much your range overlaps each type’s usual range.
| Range | Semitones | Octaves | Interval | Closest voice type |
|---|---|---|---|---|
| C3–C5 | 24 | 2.00 | 2 octaves | Tenor |
| A2–G4 | 22 | 1.83 | 1 octave + minor 7th | Baritone |
| D3–A4 | 19 | 1.58 | 1 octave + perfect 5th | Between tenor and baritone |
| E3–B4 | 19 | 1.58 | 1 octave + perfect 5th | Tenor |
| F3–C6 | 31 | 2.58 | 2 octaves + perfect 5th | Mezzo-soprano |
| G3–E6 | 33 | 2.75 | 2 octaves + major 6th | Between soprano and mezzo-soprano |
D3–A4 and E3–B4 cover exactly the same span, but they sit in different places. Where your range sits matters as much as how wide it is.
Semitones, Octaves and Interval Names
Musicians name the distance between two notes as an interval. Inside one octave there are 12: minor and major 2nds, minor and major 3rds, a perfect 4th, the tritone (6 semitones), a perfect 5th, minor and major 6ths, minor and major 7ths, and the octave. Wider ranges are named as octaves plus one of these, or as a compound interval. For example, 2 octaves plus a perfect 5th is also called a perfect 19th. The calculator shows both.
Interval names are useful when you read about singers’ ranges or compare your range with a song. “Two octaves and a fifth” is easier to picture than “31 semitones”.
How Wide Is a Normal Vocal Range?
Many untrained adults can sing about one and a half to two octaves comfortably. Regular practice often extends this to two or three octaves, and a few singers go beyond that. Treat these figures as rough guides. Read more in how many octaves is a normal vocal range?, is 2 octaves a good vocal range? and is 3 octaves good?
A wider range isn’t a better voice. Tone, pitch accuracy and control matter more for most songs than one extra high note. Use your range as a measurement, not a competition.
Vocal Range vs Voice Type
The calculator shows the closest of the six voice types, with a match percentage for each, and draws your range against their usual ranges. This is a guide, not a classification. Voice type also depends on tessitura (where your voice is most comfortable) and tone colour, so two singers with the same range can be different types. Our guide to the six voice types explains them, and the voice type test gives a fuller result.
Which Notes Should You Count?
- Count notes you can sing clearly and repeat, in chest, mixed or head voice.
- Decide on falsetto and stay consistent. Many singers list it separately. See does falsetto count in vocal range?
- Leave out vocal fry at the bottom and one-off squeaks at the top. They inflate the number without being usable for songs.
- Expect small changes from day to day. Warm-up, tiredness and time of day all shift your extremes, so compare measurements made under similar conditions.
Frequently Asked Questions
How many octaves is C3 to C5?
Exactly 2 octaves: 24 semitones, from 130.8 Hz to 523.3 Hz. That is the usual tenor range.
How many semitones are in an octave?
Twelve. An octave above any note is 12 semitones higher, with twice the frequency, for example A3 at 220 Hz and A4 at 440 Hz.
What is 33 semitones in octaves?
33 semitones is 2.75 octaves, or 2 octaves plus a major 6th. G3 to E6 is one example.
Does the calculator record my voice?
No. It never uses the microphone. You choose the notes, and every calculation happens in your browser.