Code point
U+339E
Glyph appearance depends on your fonts.
U+339E
So<square> 006B 006DU+339E SQUARE KM 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+339E
13214
㎞
㎞
E3 8E 9E
339E
0000339E
%E3%8E%9E
\u339E
\u339E
\u339E
\339E