B Diminished Seventh Chord on Piano

Also known as:
B Diminished 7th , Bdim7 , Bo7

Here you can learn how to play B Diminished Seventh Chord on the Piano. The B Diminished Seventh Chord has a diminished quality which is made by stacking minor Third intervals creating a minor Third, a diminished (lowered or flattened) Fifth that together produce a dark, tense sound. B Diminished Seventh Chord contains the notes B, D, F, A. The B Diminished Seventh Chord on Piano is a Seventh type chord which means it consists of a Triad (the Root B, the Third D, and the Fifth F) and the Seventh A.

Below you will find the notes, notation, degrees and intervals of the B Diminished Seventh Chord along with any related scales and chords. In the Piano view you can display the notes of the B Diminished Seventh Chord mapped out onto the Piano keyboard and switch between the notes, degrees, intervals. These are shown across two octaves to help visualise the different inversions of the chord.

Notes

B, D, F, A

Notation

Degrees

NoteNumberName
B1Tonic
D3Mediant
F5Dominant
A7Subtonic

Intervals

NotesSemitonesInterval
B > B0Perfect Unison (P1)
B > D3minor 3rd (m3)
B > F6Diminished 5th (d5 or Tritone)
B > A9Diminished 7th (d7)
Root
Third
Fifth
Seventh
D
F
B
D
F
B
A
A
Scroll or drag above

Music Theory

Want to dig deeper and learn about the chord degrees and intervals, or see related scales and chords?

Learn more about B Diminished Seventh Chord

If you want to learn what chords are and much more, check out our free Fundamentals of Music Theory course. If you already know some of the basics, you can jump straight into the chords lesson.

Scales related to B Diminished Seventh Chord

Same Spellings

Scales that include all of the notes of the B Diminished Seventh Chord.

viio Chord of C Harmonic Minor Scale

iiio Chord of G Phrygian Dominant Mode

Different Spellings

Scales that include different spellings of all the notes of the B Diminished Seventh Chord.

viio Chord of B♯ Harmonic Minor Scale

Learn more about Piano

More to learn