F♯dim7 chord
F♯dim7 is F♯, A, C and E♭: 1–♭3–♭5–♭♭7 built on F♯. Below: guitar, piano and ukulele, each playable.
On guitar
2-0-1-2-1-2 · partial barre · medium
- Notes
- F♯ · A · C · E♭
- Formula
- 1 · ♭3 · ♭5 · ♭♭7
- First shape
- 2-0-1-2-1-2
F♯dim7 on guitar: every shape, finger by finger
On piano
root position · F♯–A–C–E♭ · right hand 1-2-3-5
- Notes
- F♯ · A · C · E♭
- Formula
- 1 · ♭3 · ♭5 · ♭♭7
F♯dim7 on piano: fingering and inversions
On ukulele
2-3-2-3 · movable · medium
- Notes
- F♯ · A · C · E♭
- Formula
- 1 · ♭3 · ♭5 · ♭♭7
- First shape
- 2-3-2-3
Where F♯dim7 usually goes next
Three changes cover most of what F♯dim7 does in songs.
- F♯dim7 → G (leads up a half step)
Guitar: F♯dim7 (2-0-1-2-1-2) to G (3-2-0-0-0-3): move the index finger to the A string, 2nd fret, move the middle finger to the low E string, 3rd fret, your ring finger lands on the high E string, 3rd fret. No finger can stay, so practice lifting all of them together and landing the new shape as a unit.
Piano: F♯dim7 to G: play G in root position (G–B–D), while F♯ moves up to G, C down to B and E♭ down to D. G - F♯dim7 → Gm (leads up a half step)
Guitar: F♯dim7 (2-0-1-2-1-2) to Gm (3-5-5-3-3-3): the index finger lays across the low E to high E strings at the 3rd fret, the middle finger goes to the A string, 5th fret, move the ring finger to the D string, 5th fret. No finger can stay, so practice lifting all of them together and landing the new shape as a unit.
Piano: F♯dim7 to Gm: play Gm in root position (G–B♭–D), while F♯ moves up to G, A up to B♭ and E♭ down to D. Gm - F♯dim7 → B (a fifth down)
Guitar: F♯dim7 (2-0-1-2-1-2) to B (x-2-4-4-4-2): the index finger lays across the A to high E strings at the 2nd fret, the middle finger goes to the D string, 4th fret, your ring finger lands on the G string, 4th fret. No finger can stay, so practice lifting all of them together and landing the new shape as a unit. F♯ and E♭ carry over from one chord to the other.
Piano: F♯dim7 to B: play B in 2nd inversion (F♯–B–D♯) and F♯ and D♯ stay under the same fingers, while C moves down to B. B
How F♯dim7 is built
F♯dim7 is a diminished seventh: three minor thirds stacked, so the chord divides the octave into four equal parts. That symmetry means F♯dim7 contains exactly the same four notes as Adim7, Cdim7 and D♯dim7; which name you use depends on the bass note and the key.
Start on F♯, count 3 half steps up to A, 3 half steps up to C then 3 half steps up to E♭. Written with flats or sharps the other way round it's G♭dim7; the sound is identical.
| Note | Role | Half steps | Hear it |
|---|---|---|---|
| F♯ | root | 0 | |
| A | minor third | 3 | |
| C | diminished fifth | 6 | |
| E♭ | diminished seventh | 9 |
Keys and progressions with F♯dim7
No major or natural minor key contains F♯dim7 as one of its own chords; it turns up as a passing chord on the way somewhere else.
Chords close to F♯dim7
- F♯dim7 is F♯dim plus E♭. F♯dim
Chords that share most of their notes with F♯dim7: Cdim7, D♯dim7, Adim7, Cdim, D♯dim, F♯dim.
Every F♯ chord
F♯dim7 chord: questions
What notes are in the F♯dim7 chord?
F♯, A, C and E♭. F♯dim7 is built 1–♭3–♭5–♭♭7 from F♯: A is the minor third, C is the diminished fifth and E♭ is the diminished seventh.
How do you play F♯dim7 on guitar?
The usual shape is 2-0-1-2-1-2 (partial barre). All 4 guitar shapes.
How do you play F♯dim7 on piano?
Play F♯, A, C and E♭ with right-hand fingers 1-2-3-5. F♯ sits on the first black key of the group of three. Inversions and left hand.
How do you play F♯dim7 on ukulele?
2-3-2-3 in standard GCEA tuning. More ukulele shapes.
What key is F♯dim7 in?
No major or natural minor key contains F♯dim7 as one of its own chords; it turns up as a passing chord on the way somewhere else.
What's the difference between F♯dim7 and F♯dim?
F♯dim7 is F♯dim plus E♭.
Diagrams and sound come from the same data, tested so they match. Updated September 2026.