Vocal Note Range Calculator
Measure the interval and approximate frequencies between two selected notes; no voice-type classification.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
Choose your lowest and highest comfortable note. This calculator reports the interval in semitones and octaves and the equal-tempered frequencies of those pitches. Two endpoint notes alone do not establish voice type, tessitura, vocal health or professional classification.
Worked example
calculated with the default values below
Lowest comfortable note E2 · Highest comfortable note E4 Interval in semitones 24 semitones · Interval in octaves 2.00 octaves · Lowest note frequency 82.41 Hz · Highest note frequency 329.63 Hz
General background references
Disclaimer
These calculators give general estimates. Sizing, pricing, availability and standards vary by brand, retailer and country, so treat the output as a starting point and confirm it against the seller's or authority's own figures.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
S=m_hi−m_lo; oct=S÷12; f=440×2^((m−69)÷12)
- m
- Equal-tempered MIDI pitch number
- S
- Interval (semitones)
- oct
- Interval (octaves)
- f
- Pitch frequency (Hz)
Reports only the selected pitch interval and equal-tempered frequencies. Endpoint notes do not establish a singer’s voice type, tessitura or vocal health.
Frequently asked questions
Does the note interval identify my voice type?
No. It reports only the selected interval in semitones and octaves and the pitches’ equal-tempered frequencies. Tessitura, tone, comfort and vocal health are not assessed.