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G Diminished 7th Chord (Gdim7)

Notes: G, B♭, D♭, F♭. Tap any diagram to hear it.

Gdim7
Notes
GB♭D♭F♭
Formula
1 – ♭3 – ♭5 – 𝄫7

Gdim7 on guitar

Open position · most common
3-1-2-0-2-0
Fret 5
x-x-5-6-5-6
Fret 8
x-10-8-9-8-9

Strings from low (left) to high (right). Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. × = don’t play, ○ = open string.

Gdim7 on ukulele

Open position · most common
0-1-0-1
Fret 4
0-4-6-4
Fret 7
0-10-9-7

Gdim7 on piano

Other G chords

GGmG7Gmaj7Gm7Gsus2Gsus4GdimGaugG6Gm6G9Gadd9G7sus4Gm7♭5

Diminished 7th chords in other keys

Cdim7C♯dim7Ddim7E♭dim7Edim7Fdim7F♯dim7A♭dim7Adim7B♭dim7Bdim7

About the G Diminished 7th chord

Diminished seventh chords stack minor thirds all the way up, so the same shape repeats every three frets. They create strong, dramatic tension. Gdim7 is built from the root (G), minor third (B♭), diminished fifth (D♭), diminished seventh (F♭).

Frequently asked questions

What notes are in the G Diminished 7th chord?

The Gdim7 chord is made of G, B♭, D♭, F♭: the root, minor third, diminished fifth, diminished seventh.

How do you play Gdim7 on guitar?

The most common fingering is 3-1-2-0-2-0, from the low E string to the high E string (x = don’t play that string, 0 = open string).

How do you play Gdim7 on piano?

Press G, B♭, D♭, F♭ together. In root position the lowest note is G.