C augmented (Caug) chord on guitar

Looking for the Caug chord on guitar? It is an augmented triad (two major thirds), made of three notes: C – E – G♯.

Dots show:

Easy versioneasy

Position 3medium

Position 6medium

Position 8medium

Position 10medium

Tap a string on a diagram to hear just that string. The sound is generated in your browser with a physical string model.

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What the Caug chord sounds like

An augmented triad is two stacked major thirds. It sounds floating, dreamlike and unresolved, and is often a passing chord (e.g. C → Caug → F or Am).

Notes of the Caug chord

Degree	Note	Interval from the root
1	C	root
3	E	major third (4 semitones)
5	G♯	augmented fifth (8 semitones)

How to play it – with fingering

Easy version, barre at fret 1

String 1 (e): open (E4)
String 2 (B): fret 1, index finger (C4)
String 3 (G): fret 1, index finger (G♯3)
String 4 (D): fret 2, middle finger (E3)
String 5 (A): fret 3, ring finger (C3)
String 6 (E): not played

For the barre, lay your index finger flat across all the marked strings at fret 1; your other fingers press the higher frets.

Position 3

String 1 (e): fret 4, middle finger (G♯4)
String 2 (B): fret 5, ring finger (E4)
String 3 (G): fret 5, ring finger (C4)
String 4 (D): fret 6, little finger (G♯3)
String 5 (A): fret 3, index finger (C3)
String 6 (E): not played

Position 6

String 1 (e): not played
String 2 (B): fret 9, little finger (G♯4)
String 3 (G): fret 9, little finger (E4)
String 4 (D): fret 6, index finger (G♯3)
String 5 (A): fret 7, middle finger (E3)
String 6 (E): fret 8, ring finger (C3)

Tuning: E A D G B E (low to high). String 6 is the thickest, the low E. In the diagram, × means the string is not played, and a circle means an open string.

Which keys is it in?

The Caug chord is built from the notes of these keys (for minor keys, both the natural and the harmonic minor are considered):

A minor: III+

Similar chords and substitutes

If Caug is too hard, or you want a different colour in the same spot, these chords are worth a try.

Substitutes (by function)

C – the raised fifth falls back to a perfect fifth
F – as a passing chord it resolves here (V+ → I)

Same notes

Eaug – the same notes with a different root
A♭aug – the same notes with a different root

Frequently asked questions

What notes are in the Caug chord?

C, E, G♯. The root is C; the intervals of the other notes from the root: major third, augmented fifth.

What is the easiest way to play Caug on guitar?

The easiest shape above is “Easy version”, rated easy. We show 6 shapes, from open and easy versions to movable barre shapes higher up the neck.

How do I read the chord diagram?

Strings run from the lowest (left) to the highest (right) – tick “Left-handed” to mirror it. Rows are frets; a number at the side shows the starting fret. Dots are fingers (1 index, 2 middle, 3 ring, 4 little), a long bar is a barre, × means don't play that string and ○ means play it open.

How is the Caug chord written?

The chord symbol is Caug, and its full name is C augmented.