Fm7b5 chord (F half-diminished seventh) on guitar
Fm7b5 (F half-diminished seventh) has four notes: F, A flat, C flat and E flat. Its formula is 1, b3, b5, b7. In major keys, Fm7b5 is the viiø7 chord in F# major.
Fm7b5 chord shapes
Finger 1 barres fret 1, then 2 on A, 4 on B.
Finger 1 barres fret 1, then 2 on A, 4 on B, 4 on e.
Fingers: 1 on D, 2 on G, 3 on B, 4 on e.
Finger 1 barres fret 6, then 3 on A, 4 on G, 2 on e.
Fingers: 3 on A, 1 on D, 4 on G.
Fingers: 1 on A, 3 on D, 2 on G, 4 on B.
Hear it and see every shape in ScaleSpace →
| Symbol | Fm7b5 |
|---|---|
| Also written | Fø, Fø7, Fmin7b5, F-7b5 |
| Notes | F Ab Cb Eb |
| Formula | 1 b3 b5 b7 |
| Intervals | root, minor third, tritone, minor seventh |
| Type | Half-diminished seventh chord |
Fm7b5 across the neck
Guitar · 6-string, tuned low to high: E, A, D, G, B, e. 24 frets.
- E string: fret 1 F (1), fret 4 Ab (flat 3), fret 7 Cb (flat 5), fret 11 Eb (flat 7), fret 13 F (1), fret 16 Ab (flat 3), fret 19 Cb (flat 5), fret 23 Eb (flat 7).
- A string: fret 2 Cb (flat 5), fret 6 Eb (flat 7), fret 8 F (1), fret 11 Ab (flat 3), fret 14 Cb (flat 5), fret 18 Eb (flat 7), fret 20 F (1), fret 23 Ab (flat 3).
- D string: fret 1 Eb (flat 7), fret 3 F (1), fret 6 Ab (flat 3), fret 9 Cb (flat 5), fret 13 Eb (flat 7), fret 15 F (1), fret 18 Ab (flat 3), fret 21 Cb (flat 5).
- G string: fret 1 Ab (flat 3), fret 4 Cb (flat 5), fret 8 Eb (flat 7), fret 10 F (1), fret 13 Ab (flat 3), fret 16 Cb (flat 5), fret 20 Eb (flat 7), fret 22 F (1).
- B string: fret 0 Cb (flat 5), fret 4 Eb (flat 7), fret 6 F (1), fret 9 Ab (flat 3), fret 12 Cb (flat 5), fret 16 Eb (flat 7), fret 18 F (1), fret 21 Ab (flat 3), fret 24 Cb (flat 5).
- e string: fret 1 F (1), fret 4 Ab (flat 3), fret 7 Cb (flat 5), fret 11 Eb (flat 7), fret 13 F (1), fret 16 Ab (flat 3), fret 19 Cb (flat 5), fret 23 Eb (flat 7).
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Questions
What notes are in the Fm7b5 chord?
Fm7b5 (F half-diminished seventh) has four notes: F, A flat, C flat and E flat. Its formula is 1, b3, b5, b7. F is the root, Ab is the minor third, Cb is the tritone and Eb is the minor seventh.
How do you play Fm7b5 on guitar?
The easiest shape is 121141. Finger 1 barres fret 1, then 2 on A, 4 on B.
What key is Fm7b5 in?
In major keys, Fm7b5 is the viiø7 chord in F# major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between Fm7b5 and Fdim7?
Fm7b5 and Fdim7 share F, Ab and Cb. Fm7b5 has Eb, the flat 7th, where Fdim7 has Ebb, the double flat 7th.