Guitar chord reference
G Diminished 7 guitar chord: five CAGED shapes
A diminished seventh chord stacks three minor thirds, creating a symmetrical four-note structure. Any chord tone can sound like a root, so spelling and harmonic context matter as much as fingering.
Chord construction and function
The diminished 7th is enharmonically equivalent to a major 6th but functions differently. Combined with ♭3 and ♭5, it allows every voice to resolve by a small step.
- Chord formula
- 1 · ♭3 · ♭5 · ♭♭7
- Notes in Gdim7
- G · B♭ · D♭ · F♭
Gdim7 in CAGED neck order
Root notes are highlighted. Read each movable voicing as a set of chord tones, not simply as a copied open shape.
C shape
A shape
G shape
E shape
D shape
Practice drill
Move one diminished shape in minor-third intervals and track the changing root names. Resolve each chord tone by semitone into a nearby major or minor voicing.
Follow the guitar chord practice guide for clean placement, timed changes and connected CAGED movement.
Learn how the five movable forms overlap, where their roots sit and when to use partial voicings in the CAGED system guide.
Open the chord randomiser