C7 chord (C dominant seventh) on guitar
C7 (C dominant seventh) has four notes: C, E, G and B flat. Its formula is 1, 3, 5, b7. In major keys, C7 is the V7 chord in F major.
C7 chord shapes
Fingers: 3 on A, 2 on D, 4 on G, 1 on B.
Fingers: 1 on A, 3 on D, 2 on G, 4 on B.
Finger 1 barres fret 3, then 3 on D, 4 on B.
Fingers: 2 on A, 1 on D, 3 on G, 4 on B.
Finger 1 barres fret 5, then 4 on E, 3 on A, 2 on e.
Fingers: 2 on A, 1 on D, 3 on G, 4 on e.
Hear it and see every shape in ScaleSpace →
| Symbol | C7 |
|---|---|
| Also written | Cdom7 |
| Notes | C E G Bb |
| Formula | 1 3 5 b7 |
| Intervals | root, major third, perfect fifth, minor seventh |
| Type | Dominant seventh chord |
C7 across the neck
Guitar · 6-string, tuned low to high: E, A, D, G, B, e. 24 frets.
- E string: fret 0 E (3), fret 3 G (5), fret 6 Bb (flat 7), fret 8 C (1), fret 12 E (3), fret 15 G (5), fret 18 Bb (flat 7), fret 20 C (1), fret 24 E (3).
- A string: fret 1 Bb (flat 7), fret 3 C (1), fret 7 E (3), fret 10 G (5), fret 13 Bb (flat 7), fret 15 C (1), fret 19 E (3), fret 22 G (5).
- D string: fret 2 E (3), fret 5 G (5), fret 8 Bb (flat 7), fret 10 C (1), fret 14 E (3), fret 17 G (5), fret 20 Bb (flat 7), fret 22 C (1).
- G string: fret 0 G (5), fret 3 Bb (flat 7), fret 5 C (1), fret 9 E (3), fret 12 G (5), fret 15 Bb (flat 7), fret 17 C (1), fret 21 E (3), fret 24 G (5).
- B string: fret 1 C (1), fret 5 E (3), fret 8 G (5), fret 11 Bb (flat 7), fret 13 C (1), fret 17 E (3), fret 20 G (5), fret 23 Bb (flat 7).
- e string: fret 0 E (3), fret 3 G (5), fret 6 Bb (flat 7), fret 8 C (1), fret 12 E (3), fret 15 G (5), fret 18 Bb (flat 7), fret 20 C (1), fret 24 E (3).
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Questions
What notes are in the C7 chord?
C7 (C dominant seventh) has four notes: C, E, G and B flat. Its formula is 1, 3, 5, b7. C is the root, E is the major third, G is the perfect fifth and Bb is the minor seventh.
How do you play C7 on guitar?
The easiest shape is x32310. Fingers: 3 on A, 2 on D, 4 on G, 1 on B.
What key is C7 in?
In major keys, C7 is the V7 chord in F major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between C7 and C?
C7 is C (C, E and G) with a flat 7th added: Bb.