Chord chart

A#dim Chord on Guitar: 3 Easy Ways to Play A Sharp Diminished (Charts)

A#dim chord charts with finger numbers, an easier version, the notes and intervals, and the keys and progressions that use it. Also searched as a#dim chord, a#dim guitar chord and how to play A#dim.

By David Sandy, guitar player and founder of Sandy Music Lab. Every chord shape on this page is checked note by note against the chord's formula.

A#dim chord diagram, Open positionA#dim Open position: low E muted, A fret 1, D fret 2, G fret 3, B fret 2, high e open.×1243x 1 2 3 2 0
Open position
x 1 2 3 2 0
A#dim chord diagram, Easy 3-string versionA#dim Easy 3-string version: low E muted, A muted, D muted, G fret 3, B fret 2, high e open.×××21x x x 3 2 0
Easy 3-string version
x x x 3 2 0
A#dim chord diagram, Movable shape (1st fret)A#dim Movable shape (1st fret): low E muted, A fret 1, D fret 2, G fret 3, B fret 2, high e muted.×1243×x 1 2 3 2 x
Movable shape (1st fret)
x 1 2 3 2 x

Numbers are fingers (1 index, 2 middle, 3 ring, 4 pinky, T thumb). × = don't play that string, ○ = play it open. A long bar is a barre: one finger flat across those strings. Strings run low E (left) to high e (right).

Chord chart by Sandy Music Lab

Quick answer: To play A#dim (A sharp diminished) on guitar, play x 1 2 3 2 0 from the low E string to the high e string (the open position shape). The chord contains A#, C#, E. If that is hard, use the easier shape x x x 3 2 0, which needs 2 fretted notes.

A#dim chord facts

Chord A#dim (A sharp diminished)
Other names A#°, A#dim triad, Bbdim (enharmonic spelling, same notes and shapes)
Notes A#, C#, E
Intervals A# (root), C# (minor 3rd), E (diminished 5th)
Formula 1-b3-b5
Difficulty Beginner
Shapes on this page 3

How do you play A#dim on guitar?

The main shape is x 1 2 3 2 0 (Open position). Finger by finger:

  1. Put your index finger (1) on the A string at fret 1 (A#, the root).
  2. Put your middle finger (2) on the D string at fret 2 (