Guitar chord · Beginner
C 7th chord (C7) — guitar chord chart
C7 is a dominant 7th chord built on C. Its notes are C, E, G, B♭. The flat 7th adds tension that wants to resolve, which is why dominant 7th chords drive blues and lead back to the home chord.
C7 chord charts
Numbers = fingers (1 index, 2 middle, 3 ring, 4 little). ○ open string, × don’t play. Low E string on the left.
How to play C7
- Ring (3) on the 5th string, fret 3 (C).
- Middle (2) on the 4th string, fret 2 (E).
- Little finger (4) on the 3rd string, fret 3 (B♭).
- Index (1) on the 2nd string, fret 1 (C).
- Let string 1 ring open.
- Strum from the 5th string down; don’t play string 6.
- Pick the strings one at a time: each note should ring clearly — if one buzzes, move that finger closer to the fret.
Once the open shape is comfortable, try the barre version at fret 3: same chord, higher voice, and a shape you can move all over the neck.
Notes in C7
| Degree | Note | Interval |
|---|---|---|
| 1 | C | root |
| 3 | E | major 3rd |
| 5 | G | perfect 5th |
| ♭7 | B♭ | minor 7th |
Progressions with C7
Drill these changes with the chord-change trainer and read how to change chords faster.
FAQ
- What notes are in the C7 chord?
- C7 (C 7th) has 4 notes: C, E, G, B♭.
- Is C7 hard to play?
- No — the open-position shape needs no barre, so it’s a good beginner chord.
- What’s the difference between C7 and C?
- C is C E G. The flat 7th adds tension that wants to resolve, which is why dominant 7th chords drive blues and lead back to the home chord.