Fdim Chord (F diminished) on Guitar
Fdim (F diminished) is made of the notes F – Ab – Cb. The easiest guitar fingering is 12310x (low E to high e; x = muted, 0 = open). It uses a barre, so it is more demanding than an open chord. Expect it to take some practice to sound clean.
Easiest shape
Alternative shape
How to play Fdim
- Press the 6th string (low E) at fret 1 (F).
- Press the 5th string (A) at fret 2 (Cb).
- Press the 4th string (D) at fret 3 (F).
- Press the 3rd string (G) at fret 1 (Ab).
- Play the 2nd string (B) open (Cb).
- Do not play the 1st string (high e).
| String | Fret | Note | Role |
|---|---|---|---|
| 6th string (low E) | 1 | F | R |
| 5th string (A) | 2 | Cb | b5 |
| 4th string (D) | 3 | F | R |
| 3rd string (G) | 1 | Ab | b3 |
| 2nd string (B) | 0 (open) | Cb | b5 |
| 1st string (high e) | x (mute) | - |
What is a F diminished chord?
A diminished chord stacks two minor thirds: root, minor third and diminished (flat) fifth.
Notes and formula. Fdim contains F, Ab, Cb. Counted from the root F, that is R (root), b3 (minor 3rd), b5 (diminished 5th).
Sound. Tense, unstable and spooky. It sounds like it must move somewhere.
Where it is used. Used as a passing chord between two diatonic chords, as in a movie suspense cue, and in jazz and classical music.
Tips for playing Fdim
Because the chord is symmetrical, the same shape moved up three frets gives the same notes in a different order.
Common mistake: Leaving the chord hanging. Diminished chords almost always resolve up a half step.
Keys that contain Fdim
Fdim is a diatonic chord, meaning it occurs naturally without accidentals, in these keys:
Try it in a progression: browse chord progressions for every key.
Related chords
Fdim chord FAQ
What notes are in a Fdim chord?
Fdim (F diminished) contains the notes F, Ab, Cb. The formula is R–b3–b5 relative to the root F.
How do you play Fdim on guitar?
The most common shape for Fdim is 12310x, read from the low E string to the high e string (x = muted, 0 = open, numbers = frets). It uses a barre, so it is more demanding than an open chord. Expect it to take some practice to sound clean.
Is Fdim an easy guitar chord?
It is rated intermediate. It uses a barre, so it is more demanding than an open chord. Expect it to take some practice to sound clean.
Which keys contain Fdim?
Fdim is a diatonic chord in F# major (vii°), Eb minor (ii°).
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