F# is a major, spelled F#, A# and C#. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is xx4324, which sits at fret 2, spans 2 frets and mutes 2 strings. 12 positions for it are shown below, from the nut up to fret 11.
Notes and intervals
Note
F#
A#
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.
xx4324sits at fret 2, spans 2 frets and mutes 2 strings4343xxsits at fret 3, needs a barre across 3 strings at fret 3 and mutes 2 stringsx1111111111sits at fret 11, needs a barre across 5 strings at fret 11 and mutes 1 stringx68678sits at fret 6, needs a barre across 3 strings at fret 6 and mutes 1 stringxx4678sits at fret 4, spans 4 frets and mutes 2 stringsx11811118sits at fret 8, needs a barre across 4 strings at fret 8 and mutes 1 stringx118117xsits at fret 7, spans 4 frets and mutes 2 stringsxx432xsits at fret 2, spans 2 frets and mutes 3 strings434xxxsits at fret 3, spans 1 fret and mutes 3 stringsx11111111xsits at fret 11, needs a barre across 4 strings at fret 11 and mutes 2 stringsx3432xsits at fret 2, spans 2 frets and mutes 2 strings4346xxsits at fret 3, spans 3 frets and mutes 2 strings
Keys F# belongs to
F# is diatonic to 24 of the 96 keys this app knows, playing a different role in each.