Code point
U+2213
Glyph appearance depends on your fonts.
U+2213
SmU+2213 MINUS-OR-PLUS SIGN is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2213
8723
∓
∓
∓
E2 88 93
2213
00002213
%E2%88%93
\u2213
\u2213
\u2213
\2213