fretboard.help is a free interactive tool for guitarists learning the CAGED system. Visualize all five CAGED scale shapes on the fretboard, explore chord progressions in any key, and navigate the Circle of Fifths — all in one place. Works on desktop and mobile with no download required.
The CAGED system connects five guitar chord shapes — C, A, G, E, and D — across the entire fretboard. Each shape covers a unique position and can be played in any key by shifting up or down the neck. Learn each shape for major, minor, pentatonic, and other scale types.
Explore common chord progressions in every key — I-IV-V, I-V-vi-IV, ii-V-I, and more. Tap any chord in a progression to see its CAGED shape on the fretboard with the Nashville Number System degree labels for each note.
The interactive Circle of Fifths shows all 12 major keys and their relative minors. Select any key to update the fretboard, or tap individual chords to explore the diatonic harmony of that key. Understand key relationships, modulation, and chord function at a glance.
Major scale, natural minor scale, major pentatonic, minor pentatonic, Dorian mode, Mixolydian mode, and more. Each scale type highlights the correct intervals across all five CAGED positions.