Guitar theory tools

Guitar fretboard, scale, arpeggio, chord, and tuning reference

Use the interactive fretboard for custom diagrams, or browse static reference pages for guitar scales, arpeggios, chord fingerings, and tunings.

Interactive fretboard Build a custom fretboard by root, scale, tuning, labels, colors, and fret count. Guitar scales Browse scale pages with notes, formulas, aliases, related scales, and fretboard links. Guitar arpeggios Browse arpeggio pages with chord tones, formulas, aliases, related arpeggios, and fretboard links. Guitar chords Browse vertical chord fingering charts with finger numbers, open strings, muted strings, and barre shapes. Guitar tunings Browse tuning pages with notes low to high, pitch ranges, common uses, related scales, and arpeggios.