Also D#dim7, F#dim7

Cdim7 (C diminished 7th): C E♭ G♭ B𝄫. Formula 1 ♭3 ♭5 ♭♭7. Also D#dim7, F#dim7, Adim7. Minor 3rds stacked all the way: symmetrical and very tense, it works as a passing chord and as a dominant with a ♭9.

Made of4

Notes4

Contains & part of20

Scales that contain it20

Inversions4

  • Cdim77

    Root position · C E♭ G♭ B𝄫

  • Cdim7/E♭6/5

    1st inversion · E♭ G♭ B𝄫 C

  • Cdim7/G♭4/3

    2nd inversion · G♭ B𝄫 C E♭

  • Cdim7/B𝄫4/2

    3rd inversion · B𝄫 C E♭ G♭

Relatives8

Same notes, other names3

Type1

Genres that use it4

Where it goes13

One small move away12

Its dominant1