F#m7b5 chord on guitar

The F# half diminished chord, written F#m7b5, has 4 notes: F# A C E. The root F# is also written Gb, so Gbm7b5 is the same chord.

F#m7b5○○2341
202210
F#m7b5121134
232255

As tab, thick low E string first: 202210, 232255. Numbers in the dots are fingers: 1 index, 2 middle, 3 ring, 4 little, T thumb. × marks a muted string and ○ an open one.

NotesF# A C E
Formula1 b3 b5 b7
IntervalsRoot, Minor 3rd, Tritone, Minor 7th

About the Half Diminished Chord

A half diminished chord is a diminished triad with a flat seventh, the ii chord of a minor key. More about the Half Diminished Chord.

Keys with F#m7b5

These keys have F#m7b5 among their chords:

Scales to play over F#m7b5

Each of these scales holds every note of the chord:

Half Diminished Chord in other keys