Gdim7 chord on guitar

The G diminished 7th chord, written Gdim7, has 4 notes: G Bb Db E.

Gdim7○○4123
312020
Gdim7123141
345353

As tab, thick low E string first: 312020, 345353. Numbers in the dots are fingers: 1 index, 2 middle, 3 ring, 4 little, T thumb. × marks a muted string and ○ an open one.

NotesG Bb Db E
Formula1 b3 b5 6
IntervalsRoot, Minor 3rd, Tritone, Major 6th

About the Diminished 7th Chord

A diminished 7th chord stacks three minor thirds, a symmetric, tense chord that can resolve in four directions. More about the Diminished 7th Chord.

Diminished 7th Chord in other keys