B diminished 7 chord (Bdim7) on guitar and piano

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B diminished 7
The B diminished 7 chord (Bdim7) is made of the notes B, D, F and G#. It is built from the root B with a minor third, a diminished fifth and a diminished seventh.
The diminished 7 chord is symmetrical and very tense: it works as a passing chord in jazz and classical music.

B diminished 7

Notes: B – D – F – G#
Guitar — positions on the neck
Bdim77123141Bdim7××91213
Piano — root position and inversions
Bdim7C1235B D F G#Bdim7C1235D F G# BBdim7C1235F G# B DBdim7C1235G# B D F

Fingerings and positions

On guitar, this chord can be played in 2 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 789797. On piano, the right hand plays 4 notes, in root position or in an inversion.

Notes and intervals

Note
Interval
B
root
D
minor third
F
diminished fifth
G#
diminished seventh

Try it in the app

Hear the chords, play them as a progression, switch instrument, note names (Do Ré Mi or C D E) and theme:

Frequently asked questions

What are the notes of the B diminished 7 chord?

The notes of the B diminished 7 chord (Bdim7) are B, D, F and G#.

How do you play the B diminished 7 chord on guitar?

On guitar, this chord can be played in 2 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 789797.

How is the B diminished 7 chord built?

The B diminished 7 chord (Bdim7) is made of the notes B, D, F and G#. It is built from the root B with a minor third, a diminished fifth and a diminished seventh.