What Is the CAGED System?
The CAGED system is a framework for understanding the guitar fretboard by dividing it into five repeating positions, each based on the shape of a familiar open chord: C, A, G, E, and D.
Every major chord on the guitar can be played using one of these five shapes — either as an open chord or as a barre chord moved up the neck. The shapes connect end-to-end, tiling the entire fretboard without gaps or overlaps. Together, they give you access to every note in any key across all six strings.
Once you learn the five shapes, you can find any chord, scale, or mode in any key across the entire neck. The system is not about memorizing five separate things — it's about seeing one continuous fretboard organized into five overlapping zones.
The Five Shapes
Each shape is named after the open chord it resembles. The shapes are shown below in their open-chord form. When played as barre chords higher up the neck, the shape stays the same but the root moves to a new key.
Root on string 5 (A string). The familiar open C major chord. Played as a barre, the root moves up the A string. The C shape's root sits on the 3rd fret of the A string — move the whole shape up the neck to play in any key.
Root on string 5 (A string). The open A major chord. Barre chords in this shape — like B major at fret 2 — are among the most common chord shapes in rock guitar. The three-note cluster on strings 2–4 is a defining feature.
Root on string 6 (low E) and string 1 (high E). The open G major chord. The G shape spans the widest range of all five shapes — the root appears on both the highest and lowest string, making it the most harmonically complete position.
Root on string 6 (low E). The open E major chord. The most commonly used barre chord shape — F major is simply E shape at fret 1. The root sits on the lowest string, giving it a full, bass-heavy sound.
Root on string 4 (D string). The open D major chord. The D shape sits highest on the neck in the CAGED cycle and is often used for lead lines and melodic phrases in that upper register.
Connecting the Shapes
The five shapes don't exist in isolation — they connect in a fixed order up the neck. Starting from the nut and moving toward the bridge, the shapes appear as: C → A → G → E → D, and then the cycle repeats 12 frets higher.
To play a C major chord in all five positions:
- C shape — open position (root at fret 0, string 5)
- A shape — root at fret 3, string 5
- G shape — root at fret 5, string 6
- E shape — root at fret 8, string 6
- D shape — root at fret 10, string 4
After the D shape, the C shape appears again an octave higher. The entire neck is covered with no gaps. Every note in C major is within reach from any position.
CAGED With Modes and Scales
The CAGED system isn't just for chords — each shape also defines a scale position. Every mode, pentatonic scale, and arpeggio pattern has a version for each of the five shapes.
When you select a mode in Guitar Mode Finder and enable CAGED view, you see exactly how the mode's notes fall within each of the five shapes. This lets you:
- Play any mode across the full length of the neck, not just in one box position
- Connect scale runs from one position to the next
- Target chord tones by knowing which shape you're in
- Improvise anywhere on the neck instead of being locked into one area
The combination of mode knowledge and CAGED positional awareness is one of the most powerful tools a guitarist can develop. Start with one mode, learn it in all five shapes, then move on.