Code point
U+2194
Glyph appearance depends on your fonts.
U+2194
SmU+2194 LEFT RIGHT ARROW is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Arrows block.
Choose the representation you need, then copy its value.
U+2194
8596
↔
↔
↔
E2 86 94
2194
00002194
%E2%86%94
\u2194
\u2194
\u2194
\2194