How to Tune to Open D
- Start from standard tuning. The A and D strings stay where they are.
- Lower the low E string a whole step, to D2.
- Lower the G string a half step, to F♯3.
- Lower the B string a whole step, to A3.
- Lower the high E string a whole step, to D4.
- Strum the open strings. You should hear a D major chord.
Tune up to each note rather than down to it. If you go past, loosen the string below the note and come back up: the string holds its pitch better that way.
String Notes and Frequencies
At the standard reference pitch, A4 = 440 Hz. String 1 is the highest-pitched string.
| String | Note | Frequency |
|---|---|---|
| 6 | D2 | 73.42 Hz |
| 5 | A2 | 110.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | F♯3 | 185.00 Hz |
| 2 | A3 | 220.00 Hz |
| 1 | D4 | 293.66 Hz |