Scales & Theory
Free browser-based Scales & Theory tools.
Scale Library Browser
Search hundreds of scales
Mode Explorer
Dorian, Phrygian and friends
Pentatonic Scale Visualizer
Major and minor pentatonics
Exotic Scale Explorer
World and synthetic scales
Key Signature Reference
All key signatures at a glance
Relative Major/Minor Finder
Find the relative key
Parallel Key Comparator
Compare parallel major and minor
Note Frequency Reference
Hz values for every note
Pitch Class Set Explorer
Set theory for atonal music
Roman Numeral Analysis Tool
Analyse with Roman numerals
Music Theory Quiz
Test your theory knowledge
Interval Stack Builder
Stack intervals into structures