C#m7b5 chord
C# half-diminished 7th · also written Dbm7b5
C4
C#
E
G
B
C5
Want it in context? Open C#m7b5 on the full piano.
Notes
- C#R
- Eb3
- Gb5
- Bb7
Formula: R – b3 – b5 – b7
C#m7b5 inversions
The same notes, with a different note in the bass.
Root position C#m7b5
C4
C#
E
G
B
C5
1st inversion C#m7b5/E
C4
E
G
B
C5
C#
2nd inversion C#m7b5/G
C4
G
B
C5
C#
E
3rd inversion C#m7b5/B
C4
B
C5
C#
E
G
More C# chords
Half-diminished 7th chords in other keys
FAQ
What notes are in the C#m7b5 chord?
The C# half-diminished 7th chord (C#m7b5) has 4 notes: C#, E, G and B.
How do you play C#m7b5 on the piano?
Put your right hand on C#, E, G and B, starting from C#. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).
What is the formula of a half-diminished 7th chord?
R – b3 – b5 – b7 (in semitones from the root: 0, 3, 6, 10).
Is C#m7b5 the same as Dbm7b5?
Yes. C# and Db are the same key on the piano (enharmonic), so C#m7b5 and Dbm7b5 sound the same.