Guitar UpscaleOpen the guitar

Cdim7 chord on guitar

The C diminished 7th chord, written Cdim7, has 4 notes: C Eb Gb A.

Cdim7×41213
x31212
Cdim78123141
89(10)8(10)8

As tab, thick low E string first: x31212, 89(10)8(10)8. Numbers in the dots are fingers: 1 index, 2 middle, 3 ring, 4 little, T thumb. × marks a muted string and ○ an open one.

NotesC Eb Gb A
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