Open G Tuning for Guitar
Strings run D2 G2 D3 G3 B3 D4, in playing order. Tune by microphone below, or read the exact frequencies and what changes from standard guitar tuning.
| # | Note | Frequency (Hz) |
|---|---|---|
| 6 | D2 | 73.42 |
| 5 | G2 | 98.00 |
| 4 | D3 | 146.83 |
| 3 | G3 | 196.00 |
| 2 | B3 | 246.94 |
| 1 | D4 | 293.66 |
Pitch is detected live in your browser and never recorded, stored or uploaded. Frequencies use A4 = 440 Hz.
Getting to Open G from standard
What each string does relative to standard Guitar tuning. Work down the list in order — retuning one string changes the neck tension slightly, so go back and re-check the first string once you've finished.
| String | Standard | This tuning | Change |
|---|---|---|---|
| 6 | E2 | D2 | down 2 semitone(s) |
| 5 | A2 | G2 | down 2 semitone(s) |
| 4 | D3 | D3 | unchanged |
| 3 | G3 | G3 | unchanged |
| 2 | B3 | B3 | unchanged |
| 1 | E4 | D4 | down 2 semitone(s) |
Why players use Open G
Three strings drop a whole step and the rest stay put, giving an open G major chord. Strongly associated with Delta blues and with rock players who remove the sixth string entirely and treat it as a five-string open tuning.
The interval structure of Open G
Open strings spell D, G, D, G, B, D — a G major triad with the root doubled and the fifth appearing three times. Only the sixth, fifth and first strings move, all down a whole step, making it one of the least disruptive open tunings to reach. Its quirk is that the lowest string is the fifth rather than the root, so the open chord is technically a second inversion; players who want a root-position voicing remove the sixth string entirely, which is how the five-string open G setup associated with slide-heavy rock came about.
Open G tuning FAQ
What are the notes in Open G tuning for Guitar?
Open G runs D2, G2, D3, G3, B3, D4, in playing order. The lowest-pitched string is D2 (73.42 Hz) and the highest is D4 (293.66 Hz), measured against A4 = 440 Hz. Those are the exact target frequencies the tuner on this page listens for.
How do I get to Open G tuning from standard?
3 of the 6 strings move: E2 down 2 semitone(s) to D2; A2 down 2 semitone(s) to G2; E4 down 2 semitone(s) to D4. Work through them in order, then go back and re-check the first string — retuning shifts the neck tension slightly, so the earlier strings drift as you go.
What is Open G tuning used for?
Three strings drop a whole step and the rest stay put, giving an open G major chord. Strongly associated with Delta blues and with rock players who remove the sixth string entirely and treat it as a five-string open tuning.
What frequency is the D2 string?
D2 is 73.42 Hz at concert pitch (A4 = 440 Hz). That's the fundamental — the string also produces harmonics above it, which is why a tuner reading the wrong octave usually means it locked onto a harmonic rather than the fundamental. This is the lowest string in this guitar tuning.
How is Open G tuning structured?
Open strings spell D, G, D, G, B, D — a G major triad with the root doubled and the fifth appearing three times. Only the sixth, fifth and first strings move, all down a whole step, making it one of the least disruptive open tunings to reach. Its quirk is that the lowest string is the fifth rather than the root, so the open chord is technically a second inversion; players who want a root-position voicing remove the sixth string entirely, which is how the five-string open G setup associated with slide-heavy rock came about.
Tune it by ear, with a meter.
The tuner above snaps to this tuning's strings — no app, no sign-up.
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