Chord

Adim7 chord

Adim7 is a diminished seventh chord with the notes A, C, E♭, G♭. Also written A°7.

C♭3

E♭♭5

G♭𝄫7

Intervals

Note	Interval	Semitones
A	root	0
C	minor 3rd	3
E♭	diminished 5th	6
G♭	diminished 7th	9

Inversions

Root position	A – C – E♭ – G♭
1st inversion	C – E♭ – G♭ – A (Adim7/C)
2nd inversion	E♭ – G♭ – A – C (Adim7/E♭)
3rd inversion	G♭ – A – C – E♭ (Adim7/G♭)

Keys that contain Adim7

Not diatonic to any major or natural minor key.

Related chords

A A7 Amaj7 A6 Aadd9 Asus4

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.