C Diminished Chord on Guitar — 12 Shapes to Play It
C Diminished is a diminished triad — tense and unstable, built from stacked minor 3rds: C, Eb, Gb (root, minor 3rd, diminished 5th). It rarely resolves the phrase on its own; it wants to move somewhere else. Computed live for this exact root, Fretprism finds 12 playable shapes across the neck, each checked for a real, comfortable fingering rather than just mathematically correct notes.
C Diminished Chord Notes
| Role | Note | Interval |
|---|---|---|
| Root | C | Root |
| 3rd | Eb | Minor 3rd |
| 5th | Gb | Diminished 5th |
C Diminished on the Guitar Fretboard
C Diminished can be played in 12 real positions across the neck — the same three notes, voiced on a different set of adjacent strings each time. Use the shape below to see every one, each already checked for a real, comfortable fingering.
- Strings E-D · Second inversion
- Frets 1–3
How to practice this chord
- Play the C Diminished shapes below across the neck — the same chord, in different positions, always built from C, Eb, Gb.
- Listen for how the diminished sound holds up as you move it: the notes are identical in every shape, only the voicing (which note is on top or in the bass) changes.
- Once one shape feels comfortable, move to the next — building the same chord in multiple positions is what lets you play it wherever your hand already is on the neck.
C Diminished FAQ
C Diminished (Cdim) is made up of C, Eb, Gb.
A diminished triad stacks two minor 3rds on top of each other, landing on a flatted 5th — an unstable sound that usually wants to resolve somewhere else.
Fretprism finds 12 playable shapes for C Diminished in standard tuning, each checked for a real, comfortable fingering rather than just mathematically correct notes.