The CAGED System
Five open chord shapes — C, A, G, E, D — tile the entire guitar neck. Here's what CAGED actually is, why the shapes always appear in the same rotating order, and why the whole pattern starts over at fret 12. Once you see the machinery, you can't unsee it.
What CAGED actually is
Count the open major chord shapes you know: C, A, G, E, D. That's not a coincidence or a curriculum — those are the only five ways a major chord falls under a human hand in standard tuning. Now add the one trick that changes everything: a barre makes any open shape movable. Your index finger becomes a portable nut; slide the whole grip up and the shape keeps working, just higher.
CAGED is the discovery that these five movable shapes tile the whole neck: pick any chord — say C major — and you can play it five different ways before the pattern repeats. Watch the pink root notes in each shape below; they are the key to everything that follows.
One chord, five homes — the ladder
Here is C major, everywhere it lives below fret 12:
Why the order NEVER changes
Follow the root. Every shape contains two or three copies of the chord's root note — and each shape ends on the exact fret where the next shape begins. It's a relay race, and the root is the baton:
- Play an open C. Its highest root sits on the A string, fret 3 (under your ring finger).
- Now barre fret 3 and build an A shape on top of it. Its root is on the A string too — the very note the C shape just handed you. Same chord, one window up.
- The A shape's upper root (G string, fret 5) is exactly where the G shape anchors. The G shape's low-E root at fret 8 is where the E shape barres. The E shape's D-string root at fret 10 starts the D shape. And the D shape's top root lands you back at… a C shape, at fret 12.
The shapes interlock like puzzle pieces cut from a single octave — each one's edge is the next one's edge. That's why the sequence is forced, not memorised: C → A → G → E → D → C → … forever, in both directions, for every chord, with no exceptions.
Why it repeats at fret 12
Each shape "uses up" a fixed slice of the neck before handing over: the C shape spans 3 frets to the next anchor, A spans 2, G spans 3, E spans 2, D spans 2. Add the slices:
3 + 2 + 3 + 2 + 2 = 12 frets = one octave
Fret 12 is the octave — every string plays the same note it plays open, one octave higher. The neck literally starts over there, so the five-shape ladder starts over with it, identical. This is also why the gaps between your barre-chord positions always feel the same: they are the same.
Why the starting letter rotates
CAGED is a loop, not a line — write the five letters on a wheel. Your chord decides where you step on: a C chord enters at the C shape and runs C-A-G-E-D; a G chord enters at G and runs G-E-D-C-A; an E chord runs E-D-C-A-G. Spell your chord's own letter first, then keep reading around the circle. Same wheel every time — different door.
What CAGED is actually for
- Escaping open position. Any chord, anywhere, five ways — you pick the window nearest your hand instead of sprinting back to the nut.
- Voice leading. Changing chords inside one window means tiny hand moves — the same trick triads teach, at full-chord scale.
- Organising scales and solos. Each chord shape carries its scale and arpeggio with it: the five pentatonic boxes everyone learns are exactly these same five windows. Learn CAGED once and the neck becomes one map instead of five unrelated diagrams.
How to practice it (10 minutes)
- Pick one chord (start with C or G major).
- Play it through all five windows, low to high, naming the shape out loud — then back down.
- Between each pair, find the shared root note — the baton. That's the actual learning.
- Next session, new chord. The letters rotate; the wheel doesn't change.
The interactive tool draws this map for any chord you pick: open Chord mode — five blocks up the neck, tap any block and the fretboard jumps to that shape, with the 60-second "why" built in.
Reading only gets you so far — open the interactive fretboard and watch these ideas light up on guitar and piano.
Enter the toolFrequently asked
What is the CAGED system in simple terms?
There are only five open major-chord shapes a hand can hold: C, A, G, E and D. Add a barre and each becomes movable. CAGED is the observation that these five movable shapes tile the entire neck — any single chord can be played in five different positions, appearing always in the same C→A→G→E→D order, and the whole pattern repeats from fret 12.
Why do the CAGED shapes always appear in the same order?
Follow the root. Every shape contains two or three copies of the chord's root note, and each shape ends on the exact fret where the next shape's barre begins — its highest root becomes the next shape's anchor. Because the shapes interlock like puzzle pieces cut from one octave, the sequence is forced: C hands to A, A to G, G to E, E to D, D back to C.
Why does the CAGED pattern repeat at the 12th fret?
Each shape uses up a fixed slice of neck: the C shape spans 3 frets to the next position, A spans 2, G spans 3, E spans 2, D spans 2. Add them up: 3+2+3+2+2 = 12 frets = exactly one octave. At fret 12 every string plays the same note it plays open, so the whole ladder simply starts again, identical.
Which CAGED shape do I start from for a given chord?
CAGED is a loop — your chord decides where you step onto the wheel. Spell the chord's own letter first, then continue around the circle. A C chord runs C-A-G-E-D up the neck; a G chord runs G-E-D-C-A; an E chord runs E-D-C-A-G. Same wheel, different entry point.
Does CAGED work for minor and 7th chords, and for scales?
Yes — each window has minor, 7th and other variants (a few are impractical to finger fully, so players use partial grips). More importantly, each chord shape carries its scale and arpeageio with it: the five pentatonic boxes everyone learns are exactly these same five windows. CAGED organises the whole neck, not just chords.
Do I need all five shapes?
Not on day one. E and A shapes cover most real-world playing (they're the standard barre chords). Add the D and C shapes for color and voice leading, and the G shape last — its full barre form is awkward, so it's usually played partially.