Bm7b5 chord (B half-diminished seventh) on guitar
Bm7b5 (B half-diminished seventh) has four notes: B, D, F and A. Its formula is 1, b3, b5, b7. In major keys, Bm7b5 is the viiø7 chord in C major.
Bm7b5 chord shapes
Fingers: 2 on A, 3 on G, 1 on e.
Fingers: 2 on A, 3 on G, 4 on B, 1 on e.
Fingers: 1 on A, 3 on D, 2 on G, 4 on B.
Finger 1 barres fret 2, then 2 on D, 3 on B, 4 on e.
Finger 1 barres fret 5, then 3 on E, 4 on D, 4 on G, 2 on B.
Finger 1 barres fret 7, then 2 on A, 4 on B.
Hear it and see every shape in ScaleSpace →
| Symbol | Bm7b5 |
|---|---|
| Also written | Bø, Bø7, Bmin7b5, B-7b5 |
| Notes | B D F A |
| Formula | 1 b3 b5 b7 |
| Intervals | root, minor third, tritone, minor seventh |
| Type | Half-diminished seventh chord |
Bm7b5 across the neck
Guitar · 6-string, tuned low to high: E, A, D, G, B, e. 24 frets.
- E string: fret 1 F (flat 5), fret 5 A (flat 7), fret 7 B (1), fret 10 D (flat 3), fret 13 F (flat 5), fret 17 A (flat 7), fret 19 B (1), fret 22 D (flat 3).
- A string: fret 0 A (flat 7), fret 2 B (1), fret 5 D (flat 3), fret 8 F (flat 5), fret 12 A (flat 7), fret 14 B (1), fret 17 D (flat 3), fret 20 F (flat 5), fret 24 A (flat 7).
- D string: fret 0 D (flat 3), fret 3 F (flat 5), fret 7 A (flat 7), fret 9 B (1), fret 12 D (flat 3), fret 15 F (flat 5), fret 19 A (flat 7), fret 21 B (1), fret 24 D (flat 3).
- G string: fret 2 A (flat 7), fret 4 B (1), fret 7 D (flat 3), fret 10 F (flat 5), fret 14 A (flat 7), fret 16 B (1), fret 19 D (flat 3), fret 22 F (flat 5).
- B string: fret 0 B (1), fret 3 D (flat 3), fret 6 F (flat 5), fret 10 A (flat 7), fret 12 B (1), fret 15 D (flat 3), fret 18 F (flat 5), fret 22 A (flat 7), fret 24 B (1).
- e string: fret 1 F (flat 5), fret 5 A (flat 7), fret 7 B (1), fret 10 D (flat 3), fret 13 F (flat 5), fret 17 A (flat 7), fret 19 B (1), fret 22 D (flat 3).
Swipe the chart sideways to see all of it.
Questions
What notes are in the Bm7b5 chord?
Bm7b5 (B half-diminished seventh) has four notes: B, D, F and A. Its formula is 1, b3, b5, b7. B is the root, D is the minor third, F is the tritone and A is the minor seventh.
How do you play Bm7b5 on guitar?
The easiest shape is x20201. Fingers: 2 on A, 3 on G, 1 on e.
What key is Bm7b5 in?
In major keys, Bm7b5 is the viiø7 chord in C major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between Bm7b5 and Bdim7?
Bm7b5 and Bdim7 share B, D and F. Bm7b5 has A, the flat 7th, where Bdim7 has Ab, the double flat 7th.