Open Tuning Chords: Open G, D, E & Calculator

Open tuning chords are guitar chords played after the open strings have been tuned to form a chord—or a closely related harmony—without fretting any notes. In a major open tuning, one straight barre can move that open chord around the neck, making major chords, drones, and slide-guitar parts unusually easy to play.

Open tunings change the fretboard, so standard-tuning shapes produce different notes. Understanding which chord tones are present is more useful than memorizing isolated diagrams; start with how guitar chords are constructed.

What Are Open Tuning Chords?

An open tuning rearranges the six open-string pitches so they sound a complete chord when strummed together. Open D, for example, is D–A–D–F#–A–D; those notes are the root, perfect fifth, and major third of D major.

Open tuning versus open-position chords

The terms sound similar but mean different things. An open-position chord uses one or more unfretted strings and can be played in standard tuning. An open tuning changes the pitches of the strings themselves so that all six open strings create a planned harmony.

This matters when reading a chord chart. A familiar G shape will not remain G after retuning because some strings now produce different notes. Use a guitar string-notes reference to map them.

Why the shapes become simpler

Fretting every string at the same fret raises every note equally, preserving the chord’s intervals. A straight barre—or slide—therefore creates another major chord. Unfretted strings can also ring as drones beneath a melody.

Which Open Guitar Tunings Are Most Common?

Open D and Open G are practical starting points because they mainly lower strings. Open E and Open A provide similar layouts in higher keys but increase tension. DADGAD and Drop D are alternate tunings, not conventional major open tunings.

Tuning	Low to high	Open harmony	Typical use
Open D	D–A–D–F#–A–D	D major	Fingerstyle, blues, slide
Open G	D–G–D–G–B–D	G major	Blues, rock, slide
Open E	E–B–E–G#–B–E	E major	Slide and blues
Open A	E–A–E–A–C#–E	A major	Slide and roots-based rhythm
DADGAD	D–A–D–G–A–D	Dsus4-like	Folk, Celtic, modal music
Drop D	D–A–D–G–B–E	No complete open chord	Rock riffs, low-D power chords

Open D and Open G

Open D contains D, F#, and A—the major chord formula. From standard tuning, lower strings 6, 3, 2, and 1 to D, F#, A, and D.

For Open G, lower strings 6, 5, and 1 to D, G, and D. The lowest note is D, so the open chord is technically a G major inversion, but G remains its root.

Open E, Open A, DADGAD, and Drop D

Open E has the same layout as Open D one whole step higher. DADGAD has no F or F#, so it defines neither D minor nor D major. Drop D changes only the lowest string and emphasizes a deeper bass note; see these chords in Drop D tuning for its distinct shapes.

How Do You Play Major Chords in an Open Tuning?

To play major chords in Open D or Open G, barre all six strings at the fret whose note matches the desired root. The open position is the tuning’s named chord, and each higher fret raises the entire chord by one semitone.

Fret	Open D chord	Open G chord
0	D	G
1	E♭	A♭
2	E	A
3	F	B♭
4	F#	B
5	G	C
6	G#	D♭
7	A	D
8	B♭	E♭
9	B	E
10	C	F
11	C#	F#
12	D	G

Enharmonic names such as G#/A♭ share a fret but use different spellings by key. The principles of transposing guitar chords explain this movable system.

A worked I–IV–V progression

In Open D, the I–IV–V chords in D major are D, G, and A. Play the open strings for D, barre fret 5 for G, and barre fret 7 for A. A simple progression is:

1. Strum the open strings for four beats.
2. Barre all six strings at fret 5 for four beats.
3. Move the barre to fret 7 for four beats.
4. Release the barre and return to open D.

The same movement in Open G produces G–C–D: open, fret 5, and fret 7.

How Do You Play Minor, Seventh, and Suspended Chords?

A straight barre in a major open tuning always produces a major chord. To create minor, seventh, or suspended harmony, identify the string carrying the major third or another chord-defining note, then lower, raise, omit, or replace that note while keeping useful roots and fifths.

Changing major into minor

A major triad uses root–major third–perfect fifth; a minor triad lowers the third by one semitone. In Open D, the third-string F# makes the chord major. Changing it to F changes the defining interval in the minor chord formula.

Not every alteration produces a comfortable six-string grip. Use four or five strings or mute an awkward duplicate when needed. The same fingering cannot be transferred unchanged between tunings.

Adding sevenths and suspended tones

A dominant seventh retains the root, major third, and fifth, then adds the note ten semitones above the root. Use the dominant seventh chord formula to check the notes.

Suspended chords replace the third with the second or fourth, creating an unresolved sound. Drone strings can reinforce it, but each drone must belong to the chord.

How Do You Build Your Own Open-Tuning Chord Shapes?

Build a shape by mapping the strings, locating the required chord tones, and choosing a playable combination. A clear three- or four-note voicing can be more useful than a crowded six-string grip.

1. Write the tuning from the sixth string to the first.
2. Spell the target chord as notes, not only as a symbol.
3. Locate a root, third, and fifth near the desired position.
4. Add a seventh or extension only when the chord requires it.
5. Mute notes that clash, and allow compatible open strings to ring.
6. Play each string separately to confirm the voicing is clean.

If the lowest note is not the root, the result is an inversion rather than an incorrect chord.

How Should You Retune and Practise Safely?

Retune one string at a time, approach each pitch gradually, and recheck all six strings after every pass. Changing tension can make previously tuned strings drift.

Do not keep tightening a string that feels abnormally stiff. Open D or Open G is generally more forgiving because changed strings are lowered. A capo can raise the key while preserving the tuning’s relationships.

Begin with the open major chord and fret-5 and fret-7 barres. Check each string, practise slow I–IV–V changes, then introduce one minor or seventh voicing. Use the minor-third interval to identify the note that creates a minor sound.

Frequently Asked Questions

Is Drop D the same as Open D tuning?

No. Drop D is D–A–D–G–B–E and changes only the sixth string from standard tuning. Open D is D–A–D–F#–A–D, and all six open strings form D major.

Can standard guitar chord shapes be used in an open tuning?

Standard-tuning shapes can be physically fretted, but they usually produce different chords after the strings are retuned. Identify the actual notes in the new tuning before naming or using the shape.

What is the easiest open tuning for a beginner?

Open D and Open G are both approachable because they offer movable major chords with a straight barre and mainly require tuning strings downward. Open G changes fewer strings, while Open D places the root on both outer strings.

Why do open tuning chords work well for slide guitar?

Major open tunings place a complete major chord across one fret, so a straight slide can sound all its notes in tune. Open strings also provide drones that sustain beneath single-note slide phrases.

Can a capo change the key of an open tuning?

Yes. A capo raises every string by the same number of semitones while preserving the tuning’s interval pattern. In Open D, placing a capo at fret 2 makes the open-position chord sound as E major.

Are open tunings safe for a guitar neck?

Tunings that lower strings, such as Open D and Open G, usually reduce tension compared with standard tuning. Tunings that raise several strings increase tension, so retune gradually and stop if the strings or instrument feel unusually tight.