SazMate

C Half-Diminished Chord (Cm7♭5)

Notes: C, E♭, G♭, B♭. Tap any diagram to hear it.

Cm7♭5
Notes
CE♭G♭B♭
Formula
1 – ♭3 – ♭5 – ♭7

Cm7♭5 on guitar

Fret 1 · most common
x-3-1-3-1-2
Fret 8
8-9-8-8-11-8
Fret 13
x-15-13-15-13-14

Strings from low (left) to high (right). Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. × = don’t play, ○ = open string.

Cm7♭5 on ukulele

Fret 2 · most common
3-3-2-3
Fret 5
5-6-6-6
Fret 8
8-10-8-9

Cm7♭5 on piano

Other C chords

CCmC7Cmaj7Cm7Csus2Csus4CdimCaugC6Cm6C9Cadd9C7sus4Cdim7

Half-Diminished chords in other keys

C♯m7♭5Dm7♭5E♭m7♭5Em7♭5Fm7♭5F♯m7♭5Gm7♭5A♭m7♭5Am7♭5B♭m7♭5Bm7♭5

About the C Half-Diminished chord

Half-diminished chords (minor seven flat five) are the ii chord of minor keys and a staple of jazz progressions. Cm7♭5 is built from the root (C), minor third (E♭), diminished fifth (G♭), minor seventh (B♭).

Frequently asked questions

What notes are in the C Half-Diminished chord?

The Cm7♭5 chord is made of C, E♭, G♭, B♭: the root, minor third, diminished fifth, minor seventh.

How do you play Cm7♭5 on guitar?

The most common fingering is x-3-1-3-1-2, from the low E string to the high E string (x = don’t play that string, 0 = open string). It uses a barre at fret 1.

How do you play Cm7♭5 on piano?

Press C, E♭, G♭, B♭ together. In root position the lowest note is C.