Quick Answer & Harmonic Definition

To play the F# Diminished 7th chord on piano, press the keys F#, A, C, D# simultaneously. In root position, F# is the lowest note. First inversion places A in the bass; second inversion uses C as the lowest note.

Piano Chord

F#dim7 Piano Chord

Four notes stacked in minor thirds. Extremely tense, used as a passing chord. Learn the F# Diminished 7th chord on piano with interactive keyboard, inversions, and audio playback.

Notes
F# – A – C – D#
Intervals
0 – 3 – 6 – 9
Type
seventh chord
F# A C D#
E
A
D
G
B
e
3
5
7
9
12
4 notes · Standard (E A D G B E)

Playing the F#dim7 Piano Chord

The F#dim7 chord is a diminished 7th chord built on the root F#. It contains 4 notes: F#, A, C, D#. On piano, this chord is played by pressing these keys simultaneously or as an arpeggio.

Four notes stacked in minor thirds. Extremely tense, used as a passing chord. Mastering the F#dim7 chord opens up countless songs and progressions in the key of F#.

Piano Finger Positions for F#dim7

For the F#dim7 seventh chord, use these finger positions:

  • Right hand (root position): Thumb (1) on F#, middle finger (3) on A, pinky (5) on C.
  • Left hand (root position): Pinky (5) on F#, middle finger (3) on A, thumb (1) on C.
  • Arpeggiated: Play the notes sequentially from lowest to highest for a broken seventh effect.

F#dim7 Chord Inversions

Inversions change the bass note while keeping the same harmonic quality:

Inversion Bass Note Notes (bottom to top) Sound
Root F# F# – A – C – D# Most stable
1st A A – C – D# – F# Lighter, less stable
2nd C C – D# – F# – A Open, airy

Interval Structure of F#dim7

Degree Interval Semitones Note in F#
Root Root (R) 0 F#
3rd Minor 3rd 3 A
5th Tritone 6 C
7th Major 6th 9 D#

Common Progressions with F#dim7 on Piano

  • I–IV–V–I: F#dim7 – Bdim7 – C#dim7 – F#dim7 (classic cadence)
  • I–V–vi–IV: F#dim7 – C# – D#m – B (pop progression)
  • ii–V–I: G#m – C# – F#dim7 (jazz turnaround)

Other F# Piano Chords

F#
Major
F#m
Minor
F#7
Dominant 7th
F#maj7
Major 7th
F#m7
Minor 7th
F#dim
Diminished

7ª Diminuta Chord in All 12 Keys

Cdim7 C#dim7 Ddim7 D#dim7 Edim7 Fdim7 F#dim7 Gdim7 G#dim7 Adim7 A#dim7 Bdim7
Virtual Piano
Interactive keyboard
F#dim7 Guitar
Guitar chord shapes
F# Scale
Notes that fit this chord
Songs
Find songs using F#dim7

Knowledge Base & FAQs

F#dim7 Piano Chord — FAQ

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

How do I play the F#dim7 chord on piano?

To play the F# Diminished 7th chord on piano, press the keys F#, A, C, D# simultaneously.

In root position, F# is the lowest note. First inversion places A in the bass; second inversion uses C as the lowest note.

What are the notes in the F#dim7 piano chord?

The F# Diminished 7th piano chord contains 4 notes: F#, A, C, D#.

These are derived from the diminished 7th interval formula applied to the root note F#.

What is the best fingering for F#dim7 on piano?

For the F#dim7 seventh in root position, use fingers 1 (thumb), 3, and 5 for a triad, or 1, 2, 3, and 5 for a seventh chord.

Inversions may use 1, 2, 4 (first inversion) or 1, 3, 5 (second inversion).

What does the F#dim7 chord sound like?

The F#dim7 chord has a four notes stacked in minor thirds.

extremely tense, used as a passing chord. It provides rich harmonic tension and expressive color within songwriting and jazz arrangements.

What keys does the F#dim7 chord belong to?

F#dim7 appears frequently across modal, jazz, blues, and contemporary progressions as an essential tension or resolution voicing.

What are the inversions of F#dim7 on piano?

F#dim7 has 3 inversions.

Root position: F#–A–C–D#. First inversion: A–C–D#–F#. Second inversion: C–D#–F#–A.

What chords go well with F#dim7 on piano?

In the key of F# major, F#dim7 pairs naturally with B major (IV chord), C# major (V chord), and D#m (vi chord).

The I–IV–V–I progression is a classic way to practice these.

Is F#dim7 a good chord for beginners on piano?

F#dim7 has 4 notes, which may be challenging for beginners.

Start with the basic triad (root, third, fifth) before adding the full seventh extension.

How do I use F#dim7 in a chord progression?

F#dim7 functions as the tonic (I) in F# major.

A classic progression is I–IV–V–I: F#dim7–B–C#–F#dim7. Practice this in both hands separately before combining.

What is the difference between F# major and F# minor on piano?

The F# major chord (F#–A#–C#) uses a major third (4 semitones from root) for a bright sound.

The F#m chord uses a minor third (3 semitones) for a darker, more emotional sound.