Open C 7-String (GCGCGCE) Tuning Chart
A free printable chart for Open C 7-String (GCGCGCE) (G - C - G - C - G - C - E): each string's note, octave and frequency at A4 = 440 Hz, and which 5 strings change from standard B-E-A-D-G-B-E. Print it for lessons, pin it, or link to it from your course page.
| String | Note | Hz | Change |
|---|---|---|---|
| 7 | G1 | 49.00 | Tune down 4 semitones |
| 6 | C2 | 65.41 | Tune down 4 semitones |
| 5 | G2 | 98.00 | Tune down a whole step |
| 4 | C3 | 130.81 | Tune down a whole step |
| 3 | G3 | 196.00 | Leave as is |
| 2 | C4 | 261.63 | Tune up a half step |
| 1 | E4 | 329.63 | Leave as is |