Browser-local music theory tool
Music Scale Finder
Select the notes you have. The finder lists common scales whose pitch-class sets contain every selection, without assigning a subjective “best” scale.
Select pitch classes
0 notes selected
Compatible scales
How it works
For each root (12 pitch classes), add each documented interval in a scale formula modulo 12. A scale matches only if its set contains every selected pitch class. Exact pitch-set matches are listed before scales that contain extra notes. The library covers Major, Natural Minor, Harmonic Minor, Major and Minor Pentatonic, Blues, Dorian, Phrygian, Lydian, Mixolydian, and Locrian.
Example and limits
C, E, and G are contained in C Major. Selecting C, D, E, F, G, A, and B gives an exact C Major pitch set (and equivalent modal pitch sets).
Pitch-class matches do not identify a song’s key, tonic, note order, chord function, or octave. Sharp/flat pairs are displayed together; this tool does not claim complete notation spelling.
Privacy
Inputs and generated results stay in this browser tab. This tool does not submit content, place inputs in the URL, or save them in browser storage. Audio tools use local Web Audio only and request no microphone access.