The F-sharp half-diminished seventh chord (abbreviated "F#m7(b5) chord") is a four-note chord consisting of the notes F, A, C, and E. The chord is formed by lowering the fifth of a F-sharp minor seventh chord a half step.

Name
F-sharp half-diminished seventh chord
Synonyms
F-sharp half-diminished chord F-sharp minor seventh flat five chord
Notes
F A C E
Intervals
1 3 5 7
Chord symbol
Fm7(b5)
Alternative symbols
Fø Fø7 Fm7b5 F7(b5) Fmi7(b5) Fmin7(b5)
Type
tetrad (four-note chord)

F#m7(b5) chord on piano

F#m7(b5) chord on guitar

F#m7(b5) chord on ukulele

F#m7(b5) chord on the staff