F♯dim7 (diminished seventh) / G♭dim7 (diminished seventh)

4-note diminished 7th on F♯ / G♭F♯, A, C, D♯.

Press to hear the chord strummed low to high.

Three stacked minor thirds — perfectly symmetric, so every note could be the root. A classic pivot chord.

The notes

Pitches taken from the first fingering below — click any note to open its frequency page.

Interval formula

DegreeNoteWhat it is
1F♯root
♭3Aminor third
♭5Cflat fifth (diminished)
6D♯major sixth

The formula reads in semitones above the root (F♯): 1, ♭3, ♭5, 6. A voicing may leave a tone out — often the fifth — but never adds one from outside this set.

Guitar fingerings · 4

23
open position
234
open position
4fr1324
from fret 4
8fr123141
from fret 8

Ukulele fingerings · 4

1324
open position
5fr1324
from fret 5
8fr1324
from fret 8
11fr1324
from fret 11

Read a diagram top-down: the thick bar is the nut, dots are where to press (the number is which finger), means play the open string, means don't play it. A bar across strings is a barre.

Other F♯ / G♭ chords

dim7 (diminished seventh) chords on every root