Fm is a minor, spelled F, Ab and C. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is 313113, which sits at fret 1 and needs a barre across 4 strings at fret 1. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
F
Ab
C
Interval
1P
3m
5P
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.
313113sits at fret 1 and needs a barre across 4 strings at fret 1x1010109xsits at fret 9, spans 1 fret and mutes 2 stringsxx3566sits at fret 3, spans 3 frets and mutes 2 stringsx56566sits at fret 5, needs a barre across 3 strings at fret 5 and mutes 1 string151315131315sits at fret 13 and needs a barre across 4 strings at fret 13x1010131310sits at fret 10, needs a barre across 5 strings at fret 10 and mutes 1 stringx10610610sits at fret 6, needs a barre across 3 strings at fret 6 and mutes 1 string31311xsits at fret 1, needs a barre across 4 strings at fret 1 and mutes 1 stringxx3113sits at fret 1, needs a barre across 2 strings at fret 1 and mutes 2 stringsxx311xsits at fret 1, needs a barre across 2 strings at fret 1 and mutes 3 stringsx13113sits at fret 1, needs a barre across 4 strings at fret 1 and mutes 1 string3131xxsits at fret 1, needs a barre across 3 strings at fret 1 and mutes 2 strings
Keys Fm belongs to
Fm is diatonic to 24 of the 96 keys this app knows, playing a different role in each.