How to Play Bdim on Piano

The B Diminished chord sounds tense and unsettled. It stacks 3 notes: B – D – F.

Two stacked minor thirds. Its fifth is squeezed a semitone flat, so the chord has no stable footing and wants to move.

Notes in Bdim

NoteIntervalFinger
BB4Root1
DD5Minor 3rd3
FF5Diminished 5th5

How to Play

Right Hand

Place your thumb (finger 1) on B. Use finger 3 on D and finger 5 on F.

Where it sits

Every note of this chord is a white key, which makes it one of the easier shapes to find without looking.

Press all 3 keys at the same time. Keep your wrist relaxed and your fingers curved. The blue dots on the piano below show exactly which keys to press — they turn green when you play the right note.

Other Diminished Chords

Cdim
C – Eb – Gb
C#dim
C# – E – G
Ddim
D – F – Ab
D#dim
D# – F# – A
Edim
E – G – Bb
Fdim
F – Ab – Cb
F#dim
F# – A – C
Gdim
G – Bb – Db
G#dim
G# – B – D
Adim
A – C – Eb
A#dim
A# – C# – E

Other B Chords

B6
B – D# – F# – G#
B7
B – D# – F# – A
B9
B – D# – F# – A – C#
B
B – D# – F#
Bm
B – D – F#
Bmaj7
B – D# – F# – A#
Bm7
B – D – F# – A
Baug
B – D# – F##
Bsus2
B – C# – F#
Bsus4
B – E – F#
Bdim7
B – D – F – Ab
Bm6
B – D – F# – G#
Badd9
B – D# – F# – C#