jarvisbox

Scale Builder

Build major, minor, harmonic minor, pentatonic, blues, and all 7 modal scales — see every note name and semitone interval for any root note, instantly.

Scale Name

Notes

Intervals (semitones)

How to use

  1. Select the root note from the first dropdown.
  2. Choose the scale type — major, minor, modal, pentatonic, or blues.
  3. The scale name, all notes, and their semitone intervals appear instantly.

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Frequently Asked Questions

Is this scale builder free?
Yes, completely free with no signup and no usage limits.
Does my data leave my device?
No. All scale calculations run in JavaScript inside your browser. Nothing is sent to any server.
Does it work on mobile?
Yes. The scale builder is mobile-first and works on iPhone Safari and Android Chrome.

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