Chord

Gdim7 chord

Gdim7 is a diminished seventh chord with the notes G, B♭, D♭, F♭. Also written G°7.

B♭♭3

D♭♭5

F♭𝄫7

Intervals

Note	Interval	Semitones
G	root	0
B♭	minor 3rd	3
D♭	diminished 5th	6
F♭	diminished 7th	9

Inversions

Root position	G – B♭ – D♭ – F♭
1st inversion	B♭ – D♭ – F♭ – G (Gdim7/B♭)
2nd inversion	D♭ – F♭ – G – B♭ (Gdim7/D♭)
3rd inversion	F♭ – G – B♭ – D♭ (Gdim7/F♭)

Keys that contain Gdim7

Not diatonic to any major or natural minor key.

Related chords

G G7 Gmaj7 G6 Gadd9 Gsus4

How to build a diminished seventh chord

A diminished seventh chord stacks three minor 3rds. It divides the octave into four equal parts, so the same four notes form diminished chords on four different roots; it often replaces a dominant chord.

Look up any other chord with the Scale & Chord Finder.