F#m7b5 is a half-diminished, spelled F#, A, C and E. In Ukulele (low G) tuning (G3 C4 E4 A4) the easiest shape is x600, which sits at fret 6, needs no stretch at all, lets 2 strings ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 11.
Notes and intervals
Note
F#
A
C
E
Interval
1P
3m
5d
7m
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
x600sits at fret 6, needs no stretch at all, lets 2 strings ring open and mutes 1 string11000sits at fret 11, needs no stretch at all and lets 3 strings ring open5600sits at fret 5, spans 1 fret and lets 2 strings ring open2423sits at fret 2 and needs a barre across 3 strings at fret 211900sits at fret 9, spans 2 frets and lets 2 strings ring open9989sits at fret 8 and spans 1 fret11987sits at fret 7 and spans 4 frets110012sits at fret 11, spans 1 fret and lets 2 strings ring open110120sits at fret 11, spans 1 fret and lets 2 strings ring open111200sits at fret 11, spans 1 fret and lets 2 strings ring open1101212sits at fret 11, spans 1 fret and lets 1 string ring open1112012sits at fret 11, spans 1 fret and lets 1 string ring open
Keys F#m7b5 belongs to
F#m7b5 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.