C#dim7 Piano Chord

The C sharp diminished 7 chord (C♯dim7) is made of the notes C♯, E, G and B♭. Its formula is 1 – ♭3 – ♭5 – 𝄫7.

Tap the keyboard to hear C♯dim7.

Notes in C♯dim7

Fingers are numbered from the thumb (1) to the little finger (5).

C♯ – E – G – B♭

E – G – B♭ – C♯

G – B♭ – C♯ – E

B♭ – C♯ – E – G

C♯dim7 is also written as C♯dim7, C#°7, C♯°7, Dbdim7, D♭dim7, Db°7, D♭°7.

C♯dim7 is not one of the basic chords of any major or minor key. It is usually used as a passing or colour chord.