C Diminished Piano Chord Chart
Notes: C - Eb - Gb
Formula: 1 - ♭3 - ♭5
Intervals: Root, Minor 3rd, Diminished 5th
Cdim
Quick answer
The Cdim piano chord uses the keys C, Eb, Gb. Play all 3 notes together for the full C Diminished sound.
- Piano keys
- C, Eb, Gb
- Formula
- 1 - ♭3 - ♭5
- Chord tone count
- 3 notes
Keys to Play
White keys: C
Black keys: Eb, Gb
Play all 3 notes simultaneously with your right hand.
About Diminished Chords
Built from two stacked minor 3rds. Diminished chords sound tense and unstable, often used as passing chords.
C Diminished Piano Chord FAQ
What notes are in the C Diminished piano chord?
The C Diminished piano chord uses the notes C, Eb, Gb.
Which piano keys do you press for Cdim?
Press C, Eb, Gb and play all 3 notes together.
What is the formula for C Diminished?
The C Diminished formula is 1 - ♭3 - ♭5: Root, Minor 3rd, Diminished 5th.