A diminished 7th

A diminished 7th guitar chord is also written as Adim7 or Ao7.

Below are up to 8 popular shapes for the A diminished 7th guitar chord, with suggested finger positions on the fretboard.

How to play the A diminished 7th chord

String numbers run from the thinnest string (1st) to the thickest string (6th). Match each numbered finger to the diagrams.

Shape 504545

• Place your index finger (1) on the 4th fret of the 2nd (B) string and 4th (D) string in a barre.
• Place your middle finger (2) on the 5th fret of the 6th (low E) string.
• Place your ring finger (3) on the 5th fret of the 3rd (G) string.
• Place your little finger (4) on the 5th fret of the 1st (high E) string.
• Let the 5th (A) string ring open.

Shape 567575

• Place your index finger (1) on the 5th fret of the 1st (high E) string, 3rd (G) string, and 6th (low E) string in a barre.
• Place your middle finger (2) on the 6th fret of the 5th (A) string.
• Place your ring finger (3) on the 7th fret of the 4th (D) string.
• Place your little finger (4) on the 7th fret of the 2nd (B) string.

View A diminished 7th inversions and slash chords

Adim7/C - Adim7/E♭ - Adim7/G♭

View diminished 7th chord for guitar with other root notes

C - D - E - F - G - A - B - C♯ - D♯ - F♯ - G♯ - A♯ - D♭ - E♭ - G♭ - A♭ - B♭