Master the G dim7 Chord with Interactive Practice

What is in Gdim7, the G diminished seventh chord? The notes are G, Bb, Db and Fb. Every interval in the stack is a minor third, so no single note stands out as the obvious root.

The listed voicings run from fret 2 up to fret 15. Gdim7 is the vii chord of Ab harmonic minor, built on the leading tone of that key. For lead lines, reach for the G whole-half scale: it holds each note of the chord, so every chord tone is available.

Hear it twice in the fretboard player at the top: once strummed, once as an arpeggio, so you can pick out each note.

G diminished 7th guitar chord is also written as Gdim7, G°7 or Go7. It is also known as the G fully diminished seventh chord.

Gdim7 Chord Notes and Formula

G dim7 chord Notes:

G Bb Db Fb

How to create the Diminished Seventh chord:

Formula: 1 b3 b5 bb7

Gdim7 Chord Interactive Fretboard

Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.

Gdim7 Guitar Chord Diagrams

Position 1 Movable

Finger Positions

Mute the B string
Mute the high E string
Place your index finger (1) on the fret 5 of the D string
Place your middle finger (2) on the fret 6 of the low E string
Place your ring finger (3) on the fret 6 of the G string
Place your pinky finger (4) on the fret 7 of the A string

Position 2 Movable

Finger Positions

Mute the low E string
Mute the high E string
Place your index finger (1) on the fret 9 of the G string
Place your middle finger (2) on the fret 10 of the A string
Place your ring finger (3) on the fret 11 of the D string
Place your pinky finger (4) on the fret 11 of the B string

Position 3 Movable

Finger Positions

Mute the low E string
Mute the A string
Place your index finger (1) on the fret 14 of the D string
Place your middle finger (2) on the fret 14 of the B string
Place your ring finger (3) on the fret 15 of the G string
Place your pinky finger (4) on the fret 15 of the high E string

Position 4 Movable

Finger Positions

Mute the low E string
Mute the A string
Place your index finger (1) on the fret 5 of the D string
Place your middle finger (2) on the fret 5 of the B string
Place your ring finger (3) on the fret 6 of the G string
Place your pinky finger (4) on the fret 6 of the high E string

Position 5 Movable

Finger Positions

Mute the low E string
Mute the B string
Mute the high E string
Place your index finger (1) on the fret 8 of the D string
Place your middle finger (2) on the fret 9 of the G string
Place your ring finger (3) on the fret 10 of the A string

Position 6 Movable

Finger Positions

Mute the A string
Mute the B string
Mute the high E string
Place your index finger (1) on the fret 2 of the D string
Place your middle finger (2) on the fret 3 of the low E string
Place your ring finger (3) on the fret 3 of the G string

Position 7 Movable

Finger Positions

Mute the low E string
Mute the A string
Place your index finger (1) on the fret 2 of the D string
Place your middle finger (2) on the fret 2 of the B string
Place your ring finger (3) on the fret 3 of the G string
Place your pinky finger (4) on the fret 3 of the high E string

Position 8 Open

Finger Positions

Let the G string play without pressing any fret
Mute the B string
Mute the high E string
Place your index finger (1) on the fret 2 of the D string
Place your middle finger (2) on the fret 3 of the low E string
Place your pinky finger (4) on the fret 4 of the A string

Find more shapes in our all guitar chords online library. If you prefer a printable pdf, download the Free Guitar Chords Chart Pdf

Chords That Go With Gdim7

One key where Gdim7 fits is Ab minor, where it works as the vii°7 chord, built on the raised 7th of the harmonic minor, so it pulls straight to the tonic. These are the main chords of that key, the ones you will often hear around it:

i · Abm iv · Dbm V · Eb

See every key in the guitar keys chart, or build a progression with these chords in the chord progression generator.

More G Chords

G Gm G7 Gm7 Gmaj7 Gsus4 Gsus2 Gadd9 Gdim G9 Gm7b5 G5 Gm9 Gmaj9

Want to know how this chord is built? Read diminished and half-diminished chords, or browse all G guitar chords.

Play This Chord With Other Roots

Want to Learn Everything About Chords?

Check Chords Domination out: a unique ebook that shows you finger positions, note names and intervals in the chords (plus a tones fretboard maps)

You'll learn how to play 44 chords types across all the fretboard, with many voicings and fingerings

In the ebook you can also find maps show you the tones in a chord all along the fretboard. They are incredibly helpful because allow you to:

Create new voicings on the fly, across all the neck
Improvise targeting the right notes
Unlock the fretboard and expand the CAGED system.

In the new ebook, Chords Domination, you'll find the fretboard tones maps for 44 different qualities of chords. Check it out:

Download Free Excerpt Learn More Here

Created by

Giancarlo Facoetti

Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher

FAQ

What notes does Gdim7 contain?

Gdim7 has G, Bb, Db and Fb. These are the root, minor third, flat fifth and diminished seventh. Fb sounds like E, nine semitones from G.

How does Gdim7 differ from a G diminished triad?

The triad has G, Bb and Db. Gdim7 adds Fb, a diminished seventh, so that all intervals between neighbouring notes are minor thirds.

Is Gdim7 the same chord as Bbdim7?

Gdim7 has the same pitches as Bbdim7, Dbdim7 and Edim7. Because the chord is symmetrical, each note can be treated as the root.

Which scale suits Gdim7?

The G whole-half scale, G, A, Bb, C, Db, Eb, E, F#, contains all four chord tones. It is a convenient source of notes over Gdim7.

Where does Gdim7 work as a vii chord?

Gdim7 is the vii chord of Ab harmonic minor, built on the raised seventh degree. The chord leads toward Ab minor.

How many Gdim7 voicings does guitar offer?

There are 8 voicings, 1 using an open string and none using a barre. The lowest sits at fret 2 and the highest at fret 15.