B diminished Chord (Bdim) & B diminished 7th Chord on Piano

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

The B diminished triad consists of the notes B, D and F. The 2 inversions to the B diminished triad are D F B and F B D.

The B diminished 7th chord, abbreviated as Bdim7 or B°7, has the notes B, D, F and A♭. The 3 inversions to the B diminished 7th chord are D F A♭ B, F A♭ B D and A♭ B D F.

In the root position, the B diminished chord has the B as the root, the D as the minor third and the F as the diminished fifth. With the B diminished 7th chord there's the addition of A♭ as the diminished seventh.

B diminished chord

notes: B D F

• B
• D
• F

B diminished 1st inversion

notes: D F B

• D
• F
• B

B diminished 2nd inversion

notes: F B D

• F
• B
• D

B diminished 7th chord

notes: B D F A♭

• B
• D
• F
• A_♭

B diminished 7th 1st inversion

notes: D F A♭ B

• D
• F
• A_♭
• B

B diminished 7th 2nd inversion

notes: F A♭ B D

• F
• A_♭
• B
• D

B diminished 7th 3rd inversion

notes: A♭ B D F

• A_♭
• B
• D
• F

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