The F-sharp diminished chord (F♯dim) contains F♯, A and C. Use the keyboard diagram to find the notes, hear the chord and compare root position with two inversions.
F-sharp diminished is a diminished triad built from F♯, A and C. Compared with F♯ minor, the fifth moves from C♯ to C.
Preserve the written note spelling shown for this chord.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
F♯dim uses 1–♭3–♭5: F♯–A–C.
Compared with F♯ minor, lower the fifth by one semitone.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | F♯dim | F♯4–A4–C5 | F♯4 |
| First inversion | F♯dim/A | A4–C5–F♯5 | A4 |
| Second inversion | F♯dim/C | C5–F♯5–A5 | C5 |
Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: diminished triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
F-sharp diminished contains F♯, A and C.
1–♭3–♭5.
F♯ minor is F♯–A–C♯. F♯ diminished lowers the fifth from C♯ to C.
Select the three pitch classes that make F♯dim, then check your answer.
This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: F♯–A–C · Formula: 1, ♭3, ♭5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.