Bbdim is a diminished, spelled Bb, Db and Fb. In Ukulele (low G) tuning (G3 C4 E4 A4) the easiest shape is 3404, which sits at fret 3, spans 1 fret and lets 1 string ring open. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
Bb
Db
Fb
Interval
1P
3m
5d
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.
3404sits at fret 3, spans 1 fret and lets 1 string ring open310xsits at fret 1, spans 2 frets, lets 1 string ring open and mutes 1 string6464sits at fret 4 and needs a barre across 3 strings at fret 4x1097sits at fret 7, spans 3 frets and mutes 1 string15130xsits at fret 13, spans 2 frets, lets 1 string ring open and mutes 1 string9109xsits at fret 9, needs a barre across 3 strings at fret 9 and mutes 1 stringx131213sits at fret 12, spans 1 fret and mutes 1 string61007sits at fret 6, spans 4 frets and lets 1 string ring open3101sits at fret 1, spans 2 frets and lets 1 string ring open3104sits at fret 1, spans 3 frets and lets 1 string ring openx101sits at fret 1, needs no stretch at all, lets 1 string ring open and mutes 1 string3464sits at fret 3 and spans 3 frets
Keys Bbdim belongs to
Bbdim is diatonic to 8 of the 96 keys this app knows, playing a different role in each.