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Open G tuning

Open G tunes the guitar to D G D G B D so the open strings ring a G major chord; it is a staple for slide guitar, blues and rock rhythm parts.

Notes from string 6 to string 1: D G D G B D

Play a string

Tune-up · 0 of 6 strings in tune

Keyboard: 1–6 pick a string, Space start/stop, B / A mode, L loop

Settings

Reference pitch (A4)
Hz

415 to 466 Hz in 0.1 Hz steps

In-tune window
Reference tone
Input device

Lower it if room noise triggers readings; raise it for quiet instruments.

FastSlow
Settings

Beeps whose pitch moves toward a steady reference as you approach the note. Headphones recommended.

Open G tuning notes and frequencies

Open G: string 6 to string 1 (Frequencies at A4 = 440 Hz)
StringNoteFrequency
6D273.42 Hz
5G298.00 Hz
4D3146.83 Hz
3G3196.00 Hz
2B3246.94 Hz
1D4293.66 Hz

Sound and genres

The root G sits on strings 5 and 3, the fifth D on strings 6, 4 and 1, and the third B on string 2. Strummed open it is a full G major chord with a low D underneath, and a single finger or slide across the strings at any fret gives another major chord.

Strings 4 to 1 (D G B D) match the four long strings of a five-string banjo in open G, which gives the tuning its ringing, bouncy character. Hold a barre and hammer string 2 up one fret for a sus4, or add string 4 at fret 2 for a sixth: small moves that drive a lot of rock rhythm guitar.

  • Blues
  • Slide guitar
  • Rock
  • Folk
  • Country

How to tune to Open G

  1. From standard, lower three strings two semitones each: string 6 from E2 to D2, string 5 from A2 to G2 and string 1 from E4 to D4.
  2. Strings 4, 3 and 2 (D, G and B) stay as they are.
  3. Go slightly below each new note and tighten up to it. If the tuner reads a string you are lowering as its neighbor, turn Detect String off and tap that string's peg.
  4. Check by ear: open strings 5 and 3 are G an octave apart, and strings 6, 4 and 1 are D in three octaves.
  5. Strum all six strings open; an even G chord with no beating means you are close. Then run the final recheck pass in the tune-up checklist for the last few cents.

Changing from standard tuning

String by string, from standard tuning. Pick a different starting tuning to see its changes, or open the tuning changer.

3 strings change

Standard → Open G
StringChangeSemitonesPegTension
6E2 → D2−2↓ Loosen−21%
5A2 → G2−2↓ Loosen−21%
4D30No change—
3G30No change—
2B30No change—
1E4 → D4−2↓ Loosen−21%

Slide and barre positions in open G

With a slide or a one-finger barre, fret 5 gives C, fret 7 gives D and fret 12 gives G an octave up, so a whole blues in G sits at the open strings, fret 5 and fret 7. Fret 3 gives B♭ and fret 10 gives F, the flat-side chords that turn up in blues and rock.

Hold the slide directly over the fret wire, not between frets, and let it rest on the strings without pressing them to the fingerboard. A spare finger lying lightly behind the slide stops the strings ringing on the wrong side.

Many players leave string 6 out of strummed chords, because its D puts the fifth in the bass. Barring strings 5 to 1 keeps the root G at the bottom.

Minor chords and setup

A straight slide can only make major chords, so minor chords need fretted partial shapes. For E minor, fret strings 4 and 1 at fret 2 and let strings 3 and 2 ring open; the same shape at frets 7, 5, 5 and 7 gives A minor.

For slide, a slightly heavier set and a little more action keep the slide from clanking on the frets, which is why some players keep a dedicated slide guitar. If you play slide only now and then, a light touch works on a normal setup. Open G only lowers strings, so it is safe on any guitar.

Chord shapes in Open G

G: 6:x 5:0 4:0 3:0 2:0 1:0. G D G B D×
GG D G B D
C: 6:x 5:5 4:5 3:5 2:5 1:5. C G C E G×11111
CC G C E G
Em: 6:x 5:x 4:2 3:0 2:0 1:2. E G B E××12
EmE G B E

Songs in Open G

Frequently asked questions

What is open G tuning?

D G D G B D, low to high. The open strings form a G major chord.

Is open G good for slide guitar?

Yes. Every fret gives a major chord under a straight slide, and the G, C and D chords of a blues in G sit at the open strings, fret 5 and fret 7.

Why do some players skip the low string in open G?

String 6 is D, the fifth of the chord, so strumming it puts the fifth in the bass. Skipping it keeps the root G on string 5 as the lowest note.

Is open G hard on my guitar?

No. It only lowers strings, so the total tension goes down slightly.

What is the difference between open G and open D?

Open G puts the root on strings 5 and 3 and sounds brighter; open D puts the root on strings 6, 4 and 1 for a deeper sound with the root in the bass. In both, fret 5 and fret 7 give the IV and V chords.

How do I play minor chords in open G?

Use partial shapes. E minor is strings 4 and 1 at fret 2 with strings 3 and 2 open, and the same shape at frets 7, 5, 5 and 7 gives A minor.

Can I use open G on an acoustic guitar?

Yes, it is common on acoustic for blues and folk, and standard acoustic strings work.