F Diminished Chord on Guitar — 12 Shapes to Play It
F Diminished is a diminished triad — tense and unstable, built from stacked minor 3rds: F, Ab, Cb (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.
F Diminished Chord Notes
| Role | Note | Interval |
|---|---|---|
| Root | F | Root |
| 3rd | Ab | Minor 3rd |
| 5th | Cb | Diminished 5th |
F Diminished on the Guitar Fretboard
F 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 D-B · Root position
- Frets 0–3
How to practice this chord
- Play the F Diminished shapes below across the neck — the same chord, in different positions, always built from F, Ab, Cb.
- 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.
F Diminished FAQ
F Diminished (Fdim) is made up of F, Ab, Cb.
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 F Diminished in standard tuning, each checked for a real, comfortable fingering rather than just mathematically correct notes.