A more extensive list of 444 advanced piano chords.
There are many different ways to play the Fdim7 piano chord. Press either of the "rotate notes" buttons to see different ways of voicing the Fdim7 piano chord. Press either of the "change octave" buttons to see the Fdim7 piano chord in different octaves. In the diagram below, you will only find the right hand notes. The bass (left hand note) is simply the root of the chord (F). If you listen while the chord plays, you can hear that the bass note stays consistant while the top notes are changing.
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The minor third of a F diminished 7th piano chord (Ab) is up 3 half-steps from the root (F).
To find out more about diminished chords and how they are built on minor thirds, visit my helpful minor thirds/diminished chords tutorial.

Piano chords with a root of C are down a fourth or up a fifth from piano chords with a root of F.
C major (C)Test Your Knowledge of C Piano Chords
See a Longer List of C Piano Chords

Piano chords with a root of C# are down a fourth or up a fifth from piano chords with a root of F.
C# major (C#)See a Longer List of C# Piano Chords

Piano chords with a root of Db are down a major third or up a sharp fifth (minor sixth) from piano chords with a root of F.
Db major (Db)Test Your Knowledge of Db Piano Chords
See a Longer List of Db Piano Chords

Piano chords with a root of D are down a minor third or up a major sixth from piano chords with a root of F.
D major (D)Test Your Knowledge of D Piano Chords
See a Longer List of D Piano Chords

Piano chords with a root of D# are down a minor third or up a major sixth from piano chords with a root of F.
D# major (D#)See a Longer List of D# Piano Chords

Piano chords with a root of Eb are down a major second or up a minor seventh from piano chords with a root of F.
Eb major (Eb)Test Your Knowledge of Eb Piano Chords
See a Longer List of Eb Piano Chords

Piano chords with a root of E are down a minor second or up a major seventh from piano chords with a root of F.
E major (E)Test Your Knowledge of E Piano Chords
See a Longer List of E Piano Chords

Test Your Knowledge of F Piano Chords
See a Longer List of F Piano Chords

Piano chords with a root of F# are down a octave or up a octave from piano chords with a root of F.
F# major (F#)See a Longer List of F# Piano Chords

Piano chords with a root of Gb are down a major seventh or up a minor second from piano chords with a root of F.
Gb major (Gb)Test Your Knowledge of Gb Piano Chords
See a Longer List of Gb Piano Chords

Piano chords with a root of G are down a minor seventh or up a major second from piano chords with a root of F.
G major (G)Test Your Knowledge of G Piano Chords
See a Longer List of G Piano Chords

Piano chords with a root of G# are down a minor seventh or up a major second from piano chords with a root of F.
G# major (G#)See a Longer List of G# Piano Chords

Piano chords with a root of Ab are down a major sixth or up a minor third from piano chords with a root of F.
Ab major (Ab)Test Your Knowledge of Ab Piano Chords
See a Longer List of Ab Piano Chords

Piano chords with a root of A are down a sharp fifth (minor sixth) or up a major third from piano chords with a root of F.
A major (A)Test Your Knowledge of A Piano Chords
See a Longer List of A Piano Chords

Piano chords with a root of A# are down a sharp fifth (minor sixth) or up a major third from piano chords with a root of F.
A# major (A#)See a Longer List of A# Piano Chords

Piano chords with a root of Bb are down a fifth or up a fourth from piano chords with a root of F.
Bb major (Bb)Test Your Knowledge of Bb Piano Chords
See a Longer List of Bb Piano Chords

Piano chords with a root of B are down a flat fifth or up a flat fifth from piano chords with a root of F.
B major (B)Test Your Knowledge of B Piano Chords
See a Longer List of B Piano Chords
Over 400 pages of annotated diagrams, an amazing opportunity to learn chord theory in an easily digestible form.
These are general guidelines and not hard-and-fast rules.
Generally, the idea is to supply the missing notes underneath the melody note. By "underneath" I mean to the left of melody note on the piano, or lower in pitch.
If the melody note is the root of the chord (F), play the following notes underneath the melody:
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If the melody note is the third of the chord (Ab), play the following notes underneath the melody:
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If the melody note is the fifth of the chord (B), play the following notes underneath the melody:
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If the melody note is the seventh of the chord (D), play the following notes underneath the melody:
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Be sure also to check out my book, "How to Play from a Fake Book (Without Gettin' the Blues)"