Skip to content

C♯ Diminished Chord on Piano

C♯dim C♯ E G Formula 1 b3 b5 3 notes

Also written D♭ dim: the same keys under another name.

Open C♯dim in the studio
Notes

What notes are in the C♯ Diminished chord?

The C♯ Diminished chord has 3 notes: C♯, E, G. Two minor thirds stacked: 3 half steps, then 3 more. The diminished fifth (6 half steps from C♯) gives it its tension.

NoteInterval from the rootHalf steps
C♯Root0
EMinor 3rd3
GDiminished 5th6
Inversions and fingering

Every way to play C♯ Diminished

The same notes in a different order. The lowest note changes the name after the slash; the fingering below is the usual one - right hand from the lowest key up, left hand from the lowest key up too.

Root position C♯dim

C♯ Diminished chord, root position: C♯ E GEGC♯

C♯ – E – G

Right hand 1-3-5Left hand 5-3-1

1st inversion C♯dim/E

C♯ Diminished chord, 1st inversion: E G C♯EGC♯

E – G – C♯

Right hand 1-2-5Left hand 5-3-1

2nd inversion C♯dim/G

C♯ Diminished chord, 2nd inversion: G C♯ EGEC♯

G – C♯ – E

Right hand 1-3-5Left hand 5-2-1

Where it lives

Keys and scales with C♯ Diminished

Every key where C♯dim is one of the seven chords, with its Roman numeral, and the scales whose notes include all of it - the ones to improvise over it.

In these keys

Scales that contain all its notes

Questions

Frequently asked

What notes are in the C♯ Diminished chord?

The C♯ Diminished chord (C♯dim) is made of C♯, E, G. Its formula is 1 b3 b5 - the root, then the intervals of a diminished chord.

How do you play C♯dim on the piano?

Put your right thumb on C♯ and play the other notes with fingers 1-3-5. With the left hand, use fingers 5-3-1 from the lowest key up.

What are the inversions of C♯dim?

root position C♯dim (C♯ E G); 1st inversion C♯dim/E (E G C♯); 2nd inversion C♯dim/G (G C♯ E).

Is C♯ Diminished the same as D♭ dim?

On the piano, yes: the same keys. The name changes with the key you are in - sharps in sharp keys, flats in flat keys.

Play it for real

Hold C♯dim and build a progression on it

The GOONS piano studio has up to 88 keys, real piano samples, MIDI keyboard support, chord pads in any key and a sequencer. It comes with the GOONS Studio subscription - start with the 7-day free trial, no card required.