Bm7b5 is a half-diminished, spelled B, D, F and A. In Standard tuning (E2 A2 D3 G3 B3 E4) the easiest shape is x20201, which sits at fret 1, spans 1 fret, lets 2 strings ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 14.
Notes and intervals
Note
B
D
F
A
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.
x20201sits at fret 1, spans 1 fret, lets 2 strings ring open and mutes 1 string700767sits at fret 6, spans 1 fret and lets 2 strings ring openx2323xsits at fret 2, needs a barre across 3 strings at fret 2 and mutes 2 strings700765sits at fret 5, spans 2 frets and lets 2 strings ring open78770xsits at fret 7, needs a barre across 4 strings at fret 7, lets 1 string ring open and mutes 1 string700465sits at fret 4, spans 3 frets and lets 2 strings ring openx0343xsits at fret 3, needs a barre across 3 strings at fret 3, lets 1 string ring open and mutes 2 stringsxx9101010sits at fret 9, spans 1 fret and mutes 2 stringsx14014013sits at fret 13, spans 1 fret, lets 2 strings ring open and mutes 1 string100010010sits at fret 10, needs no stretch at all and lets 3 strings ring openx140141213sits at fret 12, spans 2 frets, lets 1 string ring open and mutes 1 stringx14151415xsits at fret 14, needs a barre across 3 strings at fret 14 and mutes 2 strings
Keys Bm7b5 belongs to
Bm7b5 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.