Open Tunings – Major
| Tuning | Strings low to high |
|---|---|
| Open D | D A D F♯ A D |
| Open ‘D’ (2) | D A D D A D |
| Open D (3) | D A D A D D |
| Open E | E B E G♯ B E |
| Open E (2) | E A E G♯ B E |
| Open ‘E6th’ | E B E G♯ C♯ E |
| Open ‘E6th’ (2) | E B E G♯ B C♯ |
| Open F | F A C F C F |
| Open F (2) | C F C F A F |
| Open F Sharp | F♯ A♯ C♯ F♯ C♯ F♯ |
| Open G (Spanish or Chicago tuning) | D G D G B D |
| Open G (Dobro) | G B D G B D |
| Open G (2) | D G D G G D |
| Open ‘G’ Tuning (3) | G G D G B D |
| Open G (with C bass) | C G D G B D |
| Open G (Russian) | D G B D G B D |
| Open A | E A C♯ E A E |
| Open A (2) | E A C♯ E A C♯ |
| Open A (3) | E E A A C# E |
| Open A (Slide) | E A E A C♯ E |
| Open B | B F♯ B F♯ B D♯ |
| Open B (2) | F♯ B D♯ F♯ B D♯ |
| Open C | C G C G C E |
| Open C (2) | E G C G C E |