C Diminished Seventh Chord

Also known as:
C Diminished 7th , Cdim7 , Co7

The Diminished Seventh Chord has a diminished quality which is made by stacking minor Third intervals creating a minor Third, a diminished (lowered or flattened) Fifth that together produce a dark, tense sound. Diminished Seventh Chord contains the notes C, E, G, B. The Diminished Seventh Chord is a Seventh type chord which means it consists of a Triad (the Root C, the Third E, and the Fifth G) and the Seventh B.

Below you will find the Diminished Seventh Chord notes, notation, degrees, intervals, related scales and chords, and more.


C, E, G, B





C > C0Perfect Unison (P1)
C > E3minor 3rd (m3)
C > G6Diminished 5th (d5 or Tritone)
C > B9Diminished 7th (d7)

Scales related to C Diminished Seventh Chord

Same Spellings

Scales that include all of the notes of the C Diminished Seventh Chord.

viio Chord of D Harmonic Minor Scale

iiio Chord of A Phrygian Dominant Mode

Different Spellings

Chords related to C Diminished Seventh Chord

Enharmonic Equivalent

Chord with the same root and notes as the C Diminished Seventh Chord but different spelling.

B♯ Diminished Seventh Chord

Same Root Note

Chords that include the same notes (in any spelling) as the C Diminished Seventh Chord and have the same root note.

No matches found

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