SazMate

A Diminished 7th Chord (Adim7)

Notes: A, C, E♭, G♭. Tap any diagram to hear it.

Adim7
Notes
ACE♭G♭
Formula
1 – ♭3 – ♭5 – 𝄫7

Adim7 on guitar

Open position · most common
x-0-1-2-1-2
Fret 4
x-0-4-5-4-5
Fret 7
x-x-7-8-7-8

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

Adim7 on ukulele

Fret 2 · most common
2-3-2-3
Fret 5
5-6-5-6
Fret 8
8-9-8-9

Adim7 on piano

Other A chords

AAmA7Amaj7Am7Asus2Asus4AdimAaugA6Am6A9Aadd9A7sus4Am7♭5

Diminished 7th chords in other keys

Cdim7C♯dim7Ddim7E♭dim7Edim7Fdim7F♯dim7Gdim7A♭dim7B♭dim7Bdim7

About the A 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. Adim7 is built from the root (A), minor third (C), diminished fifth (E♭), diminished seventh (G♭).

Frequently asked questions

What notes are in the A Diminished 7th chord?

The Adim7 chord is made of A, C, E♭, G♭: the root, minor third, diminished fifth, diminished seventh.

How do you play Adim7 on guitar?

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

How do you play Adim7 on piano?

Press A, C, E♭, G♭ together. In root position the lowest note is A.