Guitar Chord Inversions

What is a chord inversion?

A triad contains three notes. In root position the root note is lowest. In first inversion the third is lowest. In second inversion the fifth is lowest. For C major, the notes are C, E, and G, which gives three arrangements: C major (C in bass), C/E (E in bass), C/G (G in bass).

The slash chord notation states this directly: the note before the slash is the chord, the note after is the bass note. C/E means play a C major chord with E as the lowest sounding string. C/G means play C major with G lowest. The harmony has not changed. The bass voice has.

Why inversions matter for guitar

The most practical use is creating smooth, melodic bass movement between chords. Compare two versions of the same four-chord sequence in C major.

Root position only: C (bass C) to G (bass G) to Am (bass A) to F (bass F). The bass leaps down a fifth, up a step, down a third. Functional, but angular.

With a first inversion on G: C to G/B to Am to F. Now the bass moves C to B to A to F, a near-stepwise descent. The line has direction. This is why you hear this progression constantly in acoustic and fingerpicking guitar: the walking bass underneath the chords is what gives it momentum.

D/F# works the same way in G major: the sequence G to D/F# to Em walks the bass down G to F# to E in consecutive half steps. The open-position D/F# (thumb on string 6, fret 2) is one of the most useful shapes in acoustic guitar for exactly this reason.

First inversion vs second inversion

First inversion (3rd in bass) is the workhorse. It sounds grounded enough to use freely, creates smooth bass lines, and does not call attention to itself harmonically. Think of it as a connective shape: it links the chord before it to the chord after it without interrupting the flow.

Second inversion (5th in bass) has more weight. The fifth in the bass sounds unstable, and that instability is the point. The classic use is the cadential 6/4: the tonic chord in second inversion immediately before the dominant. In C major, C/G to G creates a sense of suspension before the resolution to C. The second inversion creates the tension; the V chord releases it. Outside of this specific cadential function, second inversions appear most often as brief passing chords in a bass line rather than as resting points.

In everyday rhythm guitar, first inversions are common and second inversions are occasional. If you are deciding which to practice, start with first inversions.

How to read slash chord notation

X/Y means play chord X with note Y as the lowest sounding note. When you see G/B in a chord chart, fret B on string 5 at fret 2 and mute or avoid string 6. When you see Am/C, fret C on string 5 at fret 3. When you see D/F#, the F# is on string 6 at fret 2, typically fretted with the thumb.

Not every slash chord is an inversion. D/C, for example, has C in the bass and C is not part of a D major triad. That is a polychord or pedal-bass voicing, a different concept. This page covers only true inversions, where the bass note is one of the chord's own tones.

Open voicings vs closed voicings

The open voicings on this page are crafted individually for each chord. They use open strings where possible, which produces the resonant, characteristic sound of open-position playing. Some are very common shapes: G/B, D/F#, Am/C, Em/G. Others, particularly chromatic chords like C# major or D# minor, have no practical open-string inversion, so only the closed shape is shown.

The closed voicings are movable. The major first inversion closed shape has the bass note on string 5 and the rest of the chord packed tightly above it on strings 4, 3, and 2. That same interval pattern works for every root: C/E at the 7th position, D/F# at the 9th, G/B at the 2nd. Once you have one closed inversion shape under your fingers, you have it in every key.

Technique notes

Some open-position inversions require the left-hand thumb wrapped over the top of the neck to fret the lowest string. D/F# is the most common example. Thumb technique is standard for acoustic fingerpicking and many classical-influenced styles, but it requires a comfortable neck width and a bit of practice to do cleanly.

Shapes marked "Intermediate" involve an unusual stretch or a partial barre that beginners may find awkward. They are not technically demanding at an intermediate or advanced level, but there is no shame in using the closed voicing instead while you build up to them.