Online Open D Guitar Tuner (DADF#AD)
Pluck a string — tune until the needle enters the green zone
Tap a string to lock the target; defaults to the closest string
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Guitar Alternate TuningNotes: D - A - D - F# - A - D
About Open D Tuning
Open D tunes your guitar to a full D major triad. The low D bass note and open F# major third provide a lush, evocative sound that has inspired Delta blues slide masters and modern fingerstyle acoustic artists.
Open D Target Frequencies Chart
A4 = 440 Hz Reference| String | Target Note | Frequency (Hz) | Standard Tuning Delta |
|---|---|---|---|
| String 6 | D2 | 73.42 Hz | Down 1 whole step |
| String 5 | A2 | 110.00 Hz | Standard |
| String 4 | D3 | 146.83 Hz | Standard |
| String 3 | F#3 | 185.00 Hz | Down 1 half step |
| String 2 | A3 | 220.00 Hz | Down 1 whole step |
| String 1 | D4 | 293.66 Hz | Down 1 whole step |
How to Tune to Open D Step-by-Step
1
Lower string 6 from E2 down to D2 (73.42 Hz).
2
Strings 5 and 4 stay standard (A2, D3).
3
Lower string 3 from G3 down one half-step to F#3 (185.00 Hz).
4
Lower string 2 from B3 down one whole step to A3 (220.00 Hz).
5
Lower string 1 from E4 down one whole step to D4 (293.66 Hz).
Musical Advantages & Tone
- Pure Slide Intonation: Laying a slide across the fretboard sounds a pristine major chord without damping inner strings.
- Folk Fingerstyle Resonances: Open strings ring sympathetically during melodic picking patterns.
- Easy Conversion to D Minor (DADFAD): Drop string 3 by another half step to get evocative Open D Minor.
Famous Songs & Guitarists
- Bob Dylan ("Blood on the Tracks" album)
- Joni Mitchell ("Big Yellow Taxi")
- Elmore James ("Dust My Broom")
- The Black Crowes ("She Talks to Angels")