G diminished chord (Gdim) on guitar and piano

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G diminished
The G diminished chord (Gdim) is made of the notes G, Bb and Db. It is built from the root G with a minor third and a diminished fifth.
The diminished chord is unstable and tense: it is mostly used as a passing chord between two other chords.

G diminished

Notes: G – Bb – Db
Guitar — positions on the neck
Gdim××31231Gdim××51243Gdim××101243
Piano — root position and inversions
GdimC135G Bb DbGdimC125Bb Db GGdimC135Db G Bb

Fingerings and positions

On guitar, this chord can be played in 3 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 3453xx. On piano, the right hand plays 3 notes, in root position or in an inversion.

Notes and intervals

Note
Interval
G
root
Bb
minor third
Db
diminished fifth
In which keys? The G diminished chord is the vii° of Ab major and the ii° of F minor.

Neighbouring chords

Try it in the app

Hear the chords, play them as a progression, switch instrument, note names (Do Ré Mi or C D E) and theme:

Frequently asked questions

What are the notes of the G diminished chord?

The notes of the G diminished chord (Gdim) are G, Bb and Db.

How do you play the G diminished chord on guitar?

On guitar, this chord can be played in 3 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 3453xx.

How is the G diminished chord built?

The G diminished chord (Gdim) is made of the notes G, Bb and Db. It is built from the root G with a minor third and a diminished fifth.