How to tune to Open D
Open D tuning is D A D F# A D (low to high). Open D major — bright, ringing slide and fingerstyle tuning.Use the free TunersBook tuner below — it's already set to Open D.
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The notes, string by string
| String | Note | Frequency |
|---|---|---|
| 1 (lowest) | D2 | 73.42 Hz |
| 2 | A2 | 110 Hz |
| 3 | D3 | 146.83 Hz |
| 4 | F#3 | 185 Hz |
| 5 | A3 | 220 Hz |
| 6 (highest) | D4 | 293.66 Hz |