Code point
U+3306
Glyph appearance depends on your fonts.
U+3306
So<square> 30A6 30A9 30F3U+3306 SQUARE UON is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+3306
13062
㌆
㌆
E3 8C 86
3306
00003306
%E3%8C%86
\u3306
\u3306
\u3306
\3306