Open C tuning: C G C G C E
The open strings form a wide C major chord with a deep low C. It suits big, resonant fingerstyle and slide parts.
Open C notes and frequencies
| String | Note | Frequency | Change from standard | Listen |
|---|---|---|---|---|
| 6 | C2Down two whole steps | 65.41 Hz | Down two whole steps | |
| 5 | G2Down a whole step | 98.00 Hz | Down a whole step | |
| 4 | C3Down a whole step | 130.81 Hz | Down a whole step | |
| 3 | G3 | 196.00 Hz | Same as standard | |
| 2 | C4Up a half step | 261.63 Hz | Up a half step | |
| 1 | E4 | 329.63 Hz | Same as standard |
String 6 is the lowest (thickest) string. Frequencies use A4 = 440 Hz.
How to tune to Open C from standard
- String 6: E → C (down two whole steps).
- String 5: A → G (down a whole step).
- String 4: D → C (down a whole step).
- String 2: B → C (up a half step).
Tune down past the note and come back up to it: the string settles and holds pitch better. After a big change, check every string again because the neck tension shifts.
Questions
What are the notes in Open C tuning?
From the lowest (thickest) string to the highest: C G C G C E.
How do I tune to Open C?
Open the Fartguitar tuner with Open C selected, allow the microphone and play one string at a time until the needle sits in the middle. You can also play each reference note on this page and match it by ear.