Cdim7 chord (C diminished seventh) on guitar
Cdim7 (C diminished seventh) has four notes: C, E flat, G flat and B double flat. Its formula is 1, b3, b5, bb7.
Cdim7 chord shapes
Finger 1 barres fret 1, then 4 on A, 2 on G, 3 on e.
Finger 1 barres fret 2, then 2 on A, 3 on D, 4 on B.
Finger 1 barres fret 8, then 2 on A, 3 on D, 4 on B.
Finger 1 barres fret 7, then 2 on E, 4 on A, 3 on G.
Fingers: 1 on A, 2 on D, 3 on B, 4 on e.
Fingers: 1 on D, 3 on G, 2 on B, 4 on e.
Hear it and see every shape in ScaleSpace →
| Symbol | Cdim7 |
|---|---|
| Also written | C°7, Co7 |
| Notes | C Eb Gb Bbb |
| Formula | 1 b3 b5 bb7 |
| Intervals | root, minor third, tritone, major sixth |
| Type | Diminished seventh chord |
Cdim7 across the neck
Guitar · 6-string, tuned low to high: E, A, D, G, B, e. 24 frets.
- E string: fret 2 Gb (flat 5), fret 5 Bbb (double flat 7), fret 8 C (1), fret 11 Eb (flat 3), fret 14 Gb (flat 5), fret 17 Bbb (double flat 7), fret 20 C (1), fret 23 Eb (flat 3).
- A string: fret 0 Bbb (double flat 7), fret 3 C (1), fret 6 Eb (flat 3), fret 9 Gb (flat 5), fret 12 Bbb (double flat 7), fret 15 C (1), fret 18 Eb (flat 3), fret 21 Gb (flat 5), fret 24 Bbb (double flat 7).
- D string: fret 1 Eb (flat 3), fret 4 Gb (flat 5), fret 7 Bbb (double flat 7), fret 10 C (1), fret 13 Eb (flat 3), fret 16 Gb (flat 5), fret 19 Bbb (double flat 7), fret 22 C (1).
- G string: fret 2 Bbb (double flat 7), fret 5 C (1), fret 8 Eb (flat 3), fret 11 Gb (flat 5), fret 14 Bbb (double flat 7), fret 17 C (1), fret 20 Eb (flat 3), fret 23 Gb (flat 5).
- B string: fret 1 C (1), fret 4 Eb (flat 3), fret 7 Gb (flat 5), fret 10 Bbb (double flat 7), fret 13 C (1), fret 16 Eb (flat 3), fret 19 Gb (flat 5), fret 22 Bbb (double flat 7).
- e string: fret 2 Gb (flat 5), fret 5 Bbb (double flat 7), fret 8 C (1), fret 11 Eb (flat 3), fret 14 Gb (flat 5), fret 17 Bbb (double flat 7), fret 20 C (1), fret 23 Eb (flat 3).
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Questions
What notes are in the Cdim7 chord?
Cdim7 (C diminished seventh) has four notes: C, E flat, G flat and B double flat. Its formula is 1, b3, b5, bb7. C is the root, Eb is the minor third, Gb is the tritone and Bbb is the major sixth.
How do you play Cdim7 on guitar?
The easiest shape is x31212. Finger 1 barres fret 1, then 4 on A, 2 on G, 3 on e.
What is the difference between Cdim7 and Cdim?
Cdim7 is Cdim (C, Eb and Gb) with Bbb, the double flat 7th, added.