A diminished Chord (Adim) & A diminished 7th (Adim7) on Piano & Guitar

A piano keyboard reference for the A diminished chord, abbreviated as Adim or A°.

The A diminished triad consists of the notes A, C and E_♭. The 2 inversions to the A diminished triad are C E_♭ A and E_♭ A C.

The A diminished 7th chord, abbreviated as Adim7 or A°7, has the notes A, C, E_♭ and G_♭. The 3 inversions to the A diminished 7th chord are C E_♭ G_♭ A, E_♭ G_♭ A C and G_♭ A C E_♭.

The intervals of the A diminished chord are the root (A) , minor third (C) and diminished fifth (E_♭). With the A diminished 7th chord, there's an additional diminished seventh (G_♭).

🎸 You can also jump to guitar chord diagrams for the A diminished and A diminished7th chords in common positions on the guitar fretboard. You'll find both open chords and/or barre chords.

A diminished Chord on Piano

⌨️ hint: use numbers 1 to 7 on a computer keyboard to trigger the chords and their inversions.

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🎸 A diminished Chord Guitar Diagrams

Below you'll find guitar chord diagrams for common chord positions of the A diminished chord and the A diminished 7th chord, along with finger positions or note names.

show: Finger positions Note names

orientation: Vertical Horizontal

A diminished 7th Guitar Chords

1 Index finger

2 Middle finger

3 Ring finger

4 Pinky

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