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B Diminished Chord (Bdim)

Notes: B, D, F. Tap any diagram to hear it.

Bdim
Notes
BDF
Formula
1 – ♭3 – ♭5

Bdim on guitar

Open position · most common
x-2-0-4-3-1
Fret 6
x-x-9-7-6-7
Fret 9
x-x-9-10-12-10

Strings from low (left) to high (right). Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. × = don’t play, ○ = open string.

Bdim on ukulele

Fret 1 · most common
4-2-1-2
Fret 4
4-5-7-5
Fret 8
10-11-10-8

Bdim on piano

Other B chords

BBmB7Bmaj7Bm7Bsus2Bsus4BaugB6Bm6B9Badd9B7sus4Bm7♭5Bdim7

Diminished chords in other keys

CdimC♯dimDdimE♭dimEdimFdimF♯dimGdimA♭dimAdimB♭dim

About the B Diminished chord

Diminished chords are built from two minor thirds. They sound tense and unstable and are often used as passing chords. Bdim is built from the root (B), minor third (D), diminished fifth (F).

Frequently asked questions

What notes are in the B Diminished chord?

The Bdim chord is made of B, D, F: the root, minor third, diminished fifth.

How do you play Bdim on guitar?

The most common fingering is x-2-0-4-3-1, from the low E string to the high E string (x = don’t play that string, 0 = open string).

How do you play Bdim on piano?

Press B, D, F together. In root position the lowest note is B.