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B Half-Diminished Chord (Bm7♭5)

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

Bm7♭5
Notes
BDFA
Formula
1 – ♭3 – ♭5 – ♭7

Bm7♭5 on guitar

Open position · most common
x-2-0-2-0-1
Fret 7
7-8-7-7-10-7
Fret 12
x-14-12-14-12-13

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

Bm7♭5 on ukulele

Fret 1 · most common
2-2-1-2
Fret 4
4-5-5-5
Fret 7
7-9-7-8

Bm7♭5 on piano

Other B chords

BBmB7Bmaj7Bm7Bsus2Bsus4BdimBaugB6Bm6B9Badd9B7sus4Bdim7

Half-Diminished chords in other keys

Cm7♭5C♯m7♭5Dm7♭5E♭m7♭5Em7♭5Fm7♭5F♯m7♭5Gm7♭5A♭m7♭5Am7♭5B♭m7♭5

About the B Half-Diminished chord

Half-diminished chords (minor seven flat five) are the ii chord of minor keys and a staple of jazz progressions. Bm7♭5 is built from the root (B), minor third (D), diminished fifth (F), minor seventh (A).

Frequently asked questions

What notes are in the B Half-Diminished chord?

The Bm7♭5 chord is made of B, D, F, A: the root, minor third, diminished fifth, minor seventh.

How do you play Bm7♭5 on guitar?

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

How do you play Bm7♭5 on piano?

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