HTML character map

In HTML (and XML), there are 'character entity reference' that are used to represent non-ASCII characters. E.g. the character '→' can be encoded as →, to use in a non-Unicode-compatible text format. These characters will follow the style and size of your font.
For Emoji characters like 🥁 and 😆, check the Emoji character map.

±	plusmn: plus-minus sign (plus-or-minus sign) math stats
½	frac12: vulgar fraction one half (fraction one half)
À	Agrave: Latin capital letter A with grave accent (Latin capital letter A grave)
Ã	Atilde: Latin capital letter A with tilde
â	acirc: Latin small letter a with circumflex
ø	oslash: Latin small letter o with stroke (Latin small letter o slash)
ƒ	fnof: Latin small letter f with hook (function, florin)
Β	Beta: Greek capital letter Beta
Ο	Omicron: Greek capital letter Omicron
Ω	Omega: Greek capital letter Omega
δ	delta: Greek small letter delta
ϒ	upsih: Greek Upsilon with hook symbol
‍	zwj: zero-width joiner
€	euro: euro sign currency
↑	uarr: upwards arrow
≈	asymp: almost equal to (asymptotic to)
≡	equiv: identical to; sometimes used for 'equivalent to'
⊕	oplus: circled plus (direct sum)
⌊	lfloor: left floor (APL downstile)
♦	diams: black diamond suit[f]

Wikipedia