Bdim7 chord (B diminished seventh) on guitar
Bdim7 (B diminished seventh) has four notes: B, D, F and A flat. Its formula is 1, b3, b5, bb7.
Bdim7 chord shapes
Fingers: 3 on A, 1 on G, 2 on e.
Fingers: 3 on A, 1 on G, 4 on B, 2 on e.
Finger 1 barres fret 7, then 2 on A, 3 on D, 4 on B.
Finger 1 barres fret 6, then 2 on E, 4 on A, 3 on G.
Finger 1 barres fret 4, then 4 on E, 2 on A, 3 on B.
Fingers: 1 on A, 2 on D, 3 on B, 4 on e.
Hear it and see every shape in ScaleSpace →
| Symbol | Bdim7 |
|---|---|
| Also written | B°7, Bo7 |
| Notes | B D F Ab |
| Formula | 1 b3 b5 bb7 |
| Intervals | root, minor third, tritone, major sixth |
| Type | Diminished seventh chord |
Bdim7 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 4 Ab (double flat 7), fret 7 B (1), fret 10 D (flat 3), fret 13 F (flat 5), fret 16 Ab (double flat 7), fret 19 B (1), fret 22 D (flat 3).
- A string: fret 2 B (1), fret 5 D (flat 3), fret 8 F (flat 5), fret 11 Ab (double flat 7), fret 14 B (1), fret 17 D (flat 3), fret 20 F (flat 5), fret 23 Ab (double flat 7).
- D string: fret 0 D (flat 3), fret 3 F (flat 5), fret 6 Ab (double flat 7), fret 9 B (1), fret 12 D (flat 3), fret 15 F (flat 5), fret 18 Ab (double flat 7), fret 21 B (1), fret 24 D (flat 3).
- G string: fret 1 Ab (double flat 7), fret 4 B (1), fret 7 D (flat 3), fret 10 F (flat 5), fret 13 Ab (double 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 9 Ab (double flat 7), fret 12 B (1), fret 15 D (flat 3), fret 18 F (flat 5), fret 21 Ab (double flat 7), fret 24 B (1).
- e string: fret 1 F (flat 5), fret 4 Ab (double flat 7), fret 7 B (1), fret 10 D (flat 3), fret 13 F (flat 5), fret 16 Ab (double flat 7), fret 19 B (1), fret 22 D (flat 3).
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Questions
What notes are in the Bdim7 chord?
Bdim7 (B diminished seventh) has four notes: B, D, F and A flat. Its formula is 1, b3, b5, bb7. B is the root, D is the minor third, F is the tritone and Ab is the major sixth.
How do you play Bdim7 on guitar?
The easiest shape is x20101. Fingers: 3 on A, 1 on G, 2 on e.
What is the difference between Bdim7 and Bdim?
Bdim7 is Bdim (B, D and F) with Ab, the double flat 7th, added.