B#dim7 chord on Piano, Guitar, and Ukulele

The B-sharp diminished seventh chord (abbreviated "B#dim7 chord") is a four-note chord consisting of the notes B♯, D♯, F♯, and A. The chord is formed by adding a diminished seventh to a B-sharp diminished chord.

Name

B-sharp diminished seventh chord

Synonym

B-sharp fully diminished chord

Notes

B♯ D♯ F♯ A

Intervals

1 ♭3 ♭5 ♭♭7

Chord symbol

B♯^o7

Alternative symbols

B♯^dim7 B♯^dim B♯^o

Type

Tetrad (four-note chord)

B#dim7 chord

B#dim7 chord on piano

B#dim7 chord on guitar

B#dim7 chord on ukulele

B#dim7 chord on the staff