Fm7b5 is a half-diminished, spelled F, Ab, Cb and Eb. In Standard tuning (E2 A2 D3 G3 B3 E4) the easiest shape is 12110x, which sits at fret 1, needs a barre across 4 strings at fret 1, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
F
Ab
Cb
Eb
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.
12110xsits at fret 1, needs a barre across 4 strings at fret 1, lets 1 string ring open and mutes 1 stringxx3444sits at fret 3, spans 1 fret and mutes 2 stringsx86807sits at fret 6, spans 2 frets, lets 1 string ring open and mutes 1 stringx8989xsits at fret 8, needs a barre across 3 strings at fret 8 and mutes 2 strings466464sits at fret 4 and needs a barre across 6 strings at fret 4131413130xsits at fret 13, needs a barre across 4 strings at fret 13, lets 1 string ring open and mutes 1 string131113130xsits at fret 11, spans 2 frets, lets 1 string ring open and mutes 1 stringx11910011sits at fret 9, spans 2 frets, lets 1 string ring open and mutes 1 string131113100xsits at fret 10, spans 3 frets, lets 1 string ring open and mutes 1 stringxx13131213sits at fret 12, spans 1 fret and mutes 2 strings1211xxsits at fret 1, needs a barre across 4 strings at fret 1 and mutes 2 strings121104sits at fret 1, needs a barre across 4 strings at fret 1 and lets 1 string ring open
Keys Fm7b5 belongs to
Fm7b5 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.