Code point
U+25FD
Glyph appearance depends on your fonts.
U+25FD
SmU+25FD WHITE MEDIUM SMALL SQUARE is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Geometric Shapes block.
Choose the representation you need, then copy its value.
U+25FD
9725
◽
◽
E2 97 BD
25FD
000025FD
%E2%97%BD
\u25FD
\u25FD
\u25FD
\25FD