HTML entities

HTML entities are a predefined set of Entity references.

Overview

There is a need to be able to enter characters not found on a standard keyboard or in other Latin languages and provide a way to enter characters that are used as part of the markup language, i.e. escape their normal meaning. This was recognized early in HTML development. In version 2 there were 4 characters of the latter and 64 of the former defined. This totaled 68. By version 3.2 there were another 32 added totaling 100 characters. In version 4.0 the total went up to 252 characters and XHTML added one more.

In the English version of Windows, the characters from the first 255 characters can be inserted by holding down the Alt key and entering a zero followed by the character's three-digit decimal code on the "num" pad.

The table

The following table was adapted from wikipedia. See Special characters for entries particularly needed for eBooks (called HTMLspecial in this table). The table shows the first HTML version that supported that particular entity and the DTD that defines it for XML use. HTML5 has its own set of named character references.

The term HTMLLat1 refers to the ISO-8859-1 standard and Windows-1252. The Greek alphabet lies between 913 and 969 decimal. There are also a few Greek symbols.

Name	Character	Unicode code point (decimal)	Standard	DTD	Description
quot	"	U+0022 (34)	HTML 2.0	HTMLspecial	quotation mark (APL quote)
amp	&	U+0026 (38)	HTML 2.0	HTMLspecial	ampersand
apos	'	U+0027 (39)	XHTML 1.0	HTMLspecial	apostrophe,(apostrophe-quote)
lt	<	U+003C (60)	HTML 2.0	HTMLspecial	less-than sign
gt	>	U+003E (62)	HTML 2.0	HTMLspecial	greater-than sign
nbsp		U+00A0 (160)	HTML 3.2	HTMLlat1	non-break space
iexcl	¡	U+00A1 (161)	HTML 3.2	HTMLlat1	inverted exclamation mark
cent	¢	U+00A2 (162)	HTML 3.2	HTMLlat1	currency cent sign
pound	£	U+00A3 (163)	HTML 3.2	HTMLlat1	currency pound sign
curren	¤	U+00A4 (164)	HTML 3.2	HTMLlat1	currency sign
yen	¥	U+00A5 (165)	HTML 3.2	HTMLlat1	yen sign yuan sign)
brvbar	¦	U+00A6 (166)	HTML 3.2	HTMLlat1	broken bar (broken vertical bar)
sect	§	U+00A7 (167)	HTML 3.2	HTMLlat1	section sign
uml	¨	U+00A8 (168)	HTML 3.2	HTMLlat1	diaeresis (spacing diaeresis)
copy	©	U+00A9 (169)	HTML 3.2	HTMLlat1	copyright symbol
ordf	ª	U+00AA (170)	HTML 3.2	HTMLlat1	feminine ordinal indicator
laquo	«	U+00AB (171)	HTML 3.2	HTMLlat1	left-pointing double angle quotation mark (left pointing guillemet)
not	¬	U+00AC (172)	HTML 3.2	HTMLlat1	not sign
shy		U+00AD (173)	HTML 3.2	HTMLlat1	soft hyphen (discretionary hyphen)
reg	®	U+00AE (174)	HTML 3.2	HTMLlat1	registered sign (registered trademark symbol)
macr	¯	U+00AF (175)	HTML 3.2	HTMLlat1	macron (spacing macron, overline, APL overbar)
deg	°	U+00B0 (176)	HTML 3.2	HTMLlat1	degree symbol
plusmn	±	U+00B1 (177)	HTML 3.2	HTMLlat1	plus-minus sign (plus-or-minus sign)
sup2	²	U+00B2 (178)	HTML 3.2	HTMLlat1	superscript two (superscript digit two, squared)
sup3	³	U+00B3 (179)	HTML 3.2	HTMLlat1	superscript three (superscript digit three, cubed)
acute	´	U+00B4 (180)	HTML 3.2	HTMLlat1	acute accent (spacing acute)
micro	µ	U+00B5 (181)	HTML 3.2	HTMLlat1	micro sign
para	¶	U+00B6 (182)	HTML 3.2	HTMLlat1	pilcrow sign (paragraph sign)
middot	·	U+00B7 (183)	HTML 3.2	HTMLlat1	middle dot (Georgian comma, Greek middle dot)
cedil	¸	U+00B8 (184)	HTML 3.2	HTMLlat1	cedilla (spacing cedilla)
sup1	¹	U+00B9 (185)	HTML 3.2	HTMLlat1	superscript one (superscript digit one)
ordm	º	U+00BA (186)	HTML 3.2	HTMLlat1	masculine ordinal indicator
raquo	»	U+00BB (187)	HTML 3.2	HTMLlat1	right-pointing double angle quotation mark (right pointing guillemet)
frac14	¼	U+00BC (188)	HTML 3.2	HTMLlat	vulgar fraction one quarter (fraction one quarter)
frac12	½	U+00BD (189)	HTML 3.2	HTMLlat1	vulgar fraction one half (fraction one half)
frac34	¾	U+00BE (190)	HTML 3.2	HTMLlat1	vulgar fraction three quarters (fraction three quarters)
iquest	¿	U+00BF (191)	HTML 3.2	HTMLlat1	inverted question mark (turned question mark)
Agrave	À	U+00C0 (192)	HTML 2.0	HTMLlat1	Latin capital letter A with grave accent (Latin capital letter A grave)
Aacute	Á	U+00C1 (193)	HTML 2.0	HTMLlat1	Latin capital letter A with acute accent
Acirc	Â	U+00C2 (194)	HTML 2.0	HTMLlat1	Latin capital letter A with circumflex
Atilde	Ã	U+00C3 (195)	HTML 2.0	HTMLlat1	Latin capital letter A with tilde
Auml	Ä	U+00C4 (196)	HTML 2.0	HTMLlat1	Latin capital letter A with diaeresis
Aring	Å	U+00C5 (197)	HTML 2.0	HTMLlat1	Latin capital letter A with ring above (Latin capital letter A ring)
AElig	Æ	U+00C6 (198)	HTML 2.0	HTMLlat1	Latin capital letter AE (Latin capital ligature AE)
Ccedil	Ç	U+00C7 (199)	HTML 2.0	HTMLlat1	Latin capital letter C with cedilla
Egrave	È	U+00C8 (200)	HTML 2.0	HTMLlat1	Latin capital letter E with grave accent
Eacute	É	U+00C9 (201)	HTML 2.0	HTMLlat1	Latin capital letter E with acute accent
Ecirc	Ê	U+00CA (202)	HTML 2.0	HTMLlat1	Latin capital letter E with circumflex
Euml	Ë	U+00CB (203)	HTML 2.0	HTMLlat1	Latin capital letter E with diaeresis
Igrave	Ì	U+00CC (204)	HTML 2.0	HTMLlat1	Latin capital letter I with grave accent
Iacute	Í	U+00CD (205)	HTML 2.0	HTMLlat1	Latin capital letter I with acute accent
Icirc	Î	U+00CE (206)	HTML 2.0	HTMLlat1	Latin capital letter I with circumflex
Iuml	Ï	U+00CF (207)	HTML 2.0	HTMLlat1	Latin capital letter I with diaeresis
ETH	Ð	U+00D0 (208)	HTML 2.0	HTMLlat1	Latin capital letter Eth
Ntilde	Ñ	U+00D1 (209)	HTML 2.0	HTMLlat1	Latin capital letter N with tilde
Ograve	Ò	U+00D2 (210)	HTML 2.0	HTMLlat1	Latin capital letter O with grave accent
Oacute	Ó	U+00D3 (211)	HTML 2.0	HTMLlat1	Latin capital letter O with acute accent
Ocirc	Ô	U+00D4 (212)	HTML 2.0	HTMLlat1	Latin capital letter O with circumflex
Otilde	Õ	U+00D5 (213)	HTML 2.0	HTMLlat1	Latin capital letter O with tilde
Ouml	Ö	U+00D6 (214)	HTML 2.0	HTMLlat1	Latin capital letter O with diaeresis
times	×	U+00D7 (215)	HTML 3.2	HTMLlat1	multiplication sign
Oslash	Ø	U+00D8 (216)	HTML 2.0	HTMLlat1	Latin capital letter O with stroke (Latin capital letter O slash)
Ugrave	Ù	U+00D9 (217)	HTML 2.0	HTMLlat1	Latin capital letter U with grave accent
Uacute	Ú	U+00DA (218)	HTML 2.0	HTMLlat1	Latin capital letter U with acute accent
Ucirc	Û	U+00DB (219)	HTML 2.0	HTMLlat1	Latin capital letter U with circumflex
Uuml	Ü	U+00DC (220)	HTML 2.0	HTMLlat1	Latin capital letter U with diaeresis
Yacute	Ý	U+00DD (221)	HTML 2.0	HTMLlat1	Latin capital letter Y with acute accent
THORN	Þ	U+00DE (222)	HTML 2.0	HTMLlat1	Latin capital letter THORN
szlig	ß	U+00DF (223)	HTML 2.0	HTMLlat1	Latin small letter sharp s (ess-zed); German Eszett
agrave	à	U+00E0 (224)	HTML 2.0	HTMLlat1	Latin small letter a with grave accent
aacute	á	U+00E1 (225)	HTML 2.0	HTMLlat1	Latin small letter a with acute accent
acirc	â	U+00E2 (226)	HTML 2.0	HTMLlat1	Latin small letter a with circumflex
atilde	ã	U+00E3 (227)	HTML 2.0	HTMLlat1	Latin small letter a with tilde
auml	ä	U+00E4 (228)	HTML 2.0	HTMLlat1	Latin small letter a with diaeresis
aring	å	U+00E5 (229)	HTML 2.0	HTMLlat1	Latin small letter a with ring above
aelig	æ	U+00E6 (230)	HTML 2.0	HTMLlat1	Latin small letter ae (Latin small ligature ae)
ccedil	ç	U+00E7 (231)	HTML 2.0	HTMLlat1	Latin small letter c with cedilla
egrave	è	U+00E8 (232)	HTML 2.0	HTMLlat1	Latin small letter e with grave accent
eacute	é	U+00E9 (233)	HTML 2.0	HTMLlat1	Latin small letter e with acute accent
ecirc	ê	U+00EA (234)	HTML 2.0	HTMLlat1	Latin small letter e with circumflex
euml	ë	U+00EB (235)	HTML 2.0	HTMLlat1	Latin small letter e with diaeresis
igrave	ì	U+00EC (236)	HTML 2.0	HTMLlat1	Latin small letter i with grave accent
iacute	í	U+00ED (237)	HTML 2.0	HTMLlat1	Latin small letter i with acute accent
icirc	î	U+00EE (238)	HTML 2.0	HTMLlat1	Latin small letter i with circumflex
iuml	ï	U+00EF (239)	HTML 2.0	HTMLlat1	Latin small letter i with diaeresis
eth	ð	U+00F0 (240)	HTML 2.0	HTMLlat1	Latin small letter eth
ntilde	ñ	U+00F1 (241)	HTML 2.0	HTMLlat1	Latin small letter n with tilde
ograve	ò	U+00F2 (242)	HTML 2.0	HTMLlat1	Latin small letter o with grave accent
oacute	ó	U+00F3 (243)	HTML 2.0	HTMLlat1	Latin small letter o with acute accent
ocirc	ô	U+00F4 (244)	HTML 2.0	HTMLlat1	Latin small letter o with circumflex
otilde	õ	U+00F5 (245)	HTML 2.0	HTMLlat1	Latin small letter o with tilde
ouml	ö	U+00F6 (246)	HTML 2.0	HTMLlat1	Latin small letter o with diaeresis
divide	÷	U+00F7 (247)	HTML 3.2	HTMLlat1	division sign (obelus)
oslash	ø	U+00F8 (248)	HTML 2.0	HTMLlat1	Latin small letter o with stroke (Latin small letter o slash)
ugrave	ù	U+00F9 (249)	HTML 2.0	HTMLlat1	Latin small letter u with grave accent
uacute	ú	U+00FA (250)	HTML 2.0	HTMLlat1	Latin small letter u with acute accent
ucirc	û	U+00FB (251)	HTML 2.0	HTMLlat1	Latin small letter u with circumflex
uuml	ü	U+00FC (252)	HTML 2.0	HTMLlat1	Latin small letter u with diaeresis
yacute	ý	U+00FD (253)	HTML 2.0	HTMLlat1	Latin small letter y with acute accent
thorn	þ	U+00FE (254)	HTML 2.0	HTMLlat1	Latin small letter thorn
yuml	ÿ	U+00FF (255)	HTML 2.0	HTMLlat1	Latin small letter y with diaeresis
OElig	Œ	U+0152 (338)	HTML 4.0	HTMLspecial	Latin capital ligature OE
oelig	œ	U+0153 (339)	HTML 4.0	HTMLspecial	Latin small ligature oe
Scaron	Š	U+0160 (352)	HTML 4.0	HTMLspecial	Latin capital letter s with caron
scaron	š	U+0161 (353)	HTML 4.0	HTMLspecial	Latin small letter s with caron
Yuml	Ÿ	U+0178 (376)	HTML 4.0	HTMLspecial	Latin capital letter y with diaeresis
fnof	ƒ	U+0192 (402)	HTML 4.0	HTMLsymbol	Latin small letter f with hook (function, florin)
circ	ˆ	U+02C6 (710)	HTML 4.0	HTMLspecial	modifier letter circumflex accent
tilde	˜	U+02DC (732)	HTML 4.0	HTMLspecial	small tilde
Alpha	Α	U+0391 (913)	HTML 4.0	HTMLsymbol	Greek capital letter Alpha
Beta	Β	U+0392 (914)	HTML 4.0	HTMLsymbol	Greek capital letter Beta
Gamma	Γ	U+0393 (915)	HTML 4.0	HTMLsymbol	Greek capital letter Gamma
Delta	Δ	U+0394 (916)	HTML 4.0	HTMLsymbol	Greek capital letter Delta
Epsilon	Ε	U+0395 (917)	HTML 4.0	HTMLsymbol	Greek capital letter Epsilon
Zeta	Ζ	U+0396 (918)	HTML 4.0	HTMLsymbol	Greek capital letter Zeta
Eta	Η	U+0397 (919)	HTML 4.0	HTMLsymbol	Greek capital letter Eta
Theta	Θ	U+0398 (920)	HTML 4.0	HTMLsymbol	Greek capital letter Theta
Iota	Ι	U+0399 (921)	HTML 4.0	HTMLsymbol	Greek capital letter Iota
Kappa	Κ	U+039A (922)	HTML 4.0	HTMLsymbol	Greek capital letter Kappa
Lambda	Λ	U+039B (923)	HTML 4.0	HTMLsymbol	Greek capital letter Lambda
Mu	Μ	U+039C (924)	HTML 4.0	HTMLsymbol	Greek capital letter Mu
Nu	Ν	U+039D (925)	HTML 4.0	HTMLsymbol	Greek capital letter Nu
Xi	Ξ	U+039E (926)	HTML 4.0	HTMLsymbol	Greek capital letter Xi
Omicron	Ο	U+039F (927)	HTML 4.0	HTMLsymbol	Greek capital letter Omicron
Pi	Π	U+03A0 (928)	HTML 4.0	HTMLsymbol	Greek capital letter Pi
Rho	Ρ	U+03A1 (929)	HTML 4.0	HTMLsymbol	Greek capital letter Rho
Sigma	Σ	U+03A3 (931)	HTML 4.0	HTMLsymbol	Greek capital letter Sigma
Tau	Τ	U+03A4 (932)	HTML 4.0	HTMLsymbol	Greek capital letter Tau
Upsilon	Υ	U+03A5 (933)	HTML 4.0	HTMLsymbol	Greek capital letter Upsilon
Phi	Φ	U+03A6 (934)	HTML 4.0	HTMLsymbol	Greek capital letter Phi
Chi	Χ	U+03A7 (935)	HTML 4.0	HTMLsymbol	Greek capital letter Chi
Psi	Ψ	U+03A8 (936)	HTML 4.0	HTMLsymbol	Greek capital letter Psi
Omega	Ω	U+03A9 (937)	HTML 4.0	HTMLsymbol	Greek capital letter Omega
alpha	α	U+03B1 (945)	HTML 4.0	HTMLsymbol	Greek small letter alpha
beta	β	U+03B2 (946)	HTML 4.0	HTMLsymbol	Greek small letter beta
gamma	γ	U+03B3 (947)	HTML 4.0	HTMLsymbol	Greek small letter gamma
delta	δ	U+03B4 (948)	HTML 4.0	HTMLsymbol	Greek small letter delta
epsilon	ε	U+03B5 (949)	HTML 4.0	HTMLsymbol	Greek small letter epsilon
zeta	ζ	U+03B6 (950)	HTML 4.0	HTMLsymbol	Greek small letter zeta
eta	η	U+03B7 (951)	HTML 4.0	HTMLsymbol	Greek small letter eta
theta	θ	U+03B8 (952)	HTML 4.0	HTMLsymbol	Greek small letter theta
iota	ι	U+03B9 (953)	HTML 4.0	HTMLsymbol	Greek small letter iota
kappa	κ	U+03BA (954)	HTML 4.0	HTMLsymbol	Greek small letter kappa
lambda	λ	U+03BB (955)	HTML 4.0	HTMLsymbol	Greek small letter lambda
mu	μ	U+03BC (956)	HTML 4.0	HTMLsymbol	Greek small letter mu
nu	ν	U+03BD (957)	HTML 4.0	HTMLsymbol	Greek small letter nu
xi	ξ	U+03BE (958)	HTML 4.0	HTMLsymbol	Greek small letter xi
omicron	ο	U+03BF (959)	HTML 4.0	HTMLsymbol	Greek small letter omicron
pi	π	U+03C0 (960)	HTML 4.0	HTMLsymbol	Greek small letter pi
rho	ρ	U+03C1 (961)	HTML 4.0	HTMLsymbol	Greek small letter rho
sigmaf	ς	U+03C2 (962)	HTML 4.0	HTMLsymbol	Greek small letter final sigma
sigma	σ	U+03C3 (963)	HTML 4.0	HTMLsymbol	Greek small letter sigma
tau	τ	U+03C4 (964)	HTML 4.0	HTMLsymbol	Greek small letter tau
upsilon	υ	U+03C5 (965)	HTML 4.0	HTMLsymbol	Greek small letter upsilon
phi	φ	U+03C6 (966)	HTML 4.0	HTMLsymbol	Greek small letter phi
chi	χ	U+03C7 (967)	HTML 4.0	HTMLsymbol	Greek small letter chi
psi	ψ	U+03C8 (968)	HTML 4.0	HTMLsymbol	Greek small letter psi
omega	ω	U+03C9 (969)	HTML 4.0	HTMLsymbol	Greek small letter omega
thetasym	ϑ	U+03D1 (977)	HTML 4.0	HTMLsymbol	Greek theta symbol
upsih	ϒ	U+03D2 (978)	HTML 4.0	HTMLsymbol	Greek Upsilon with hook symbol
piv	ϖ	U+03D6 (982)	HTML 4.0	HTMLsymbol	Greek pi symbol
ensp		U+2002 (8194)	HTML 4.0	HTMLspecial	en space
emsp		U+2003 (8195)	HTML 4.0	HTMLspecial	em space
thinsp		U+2009 (8201)	HTML 4.0	HTMLspecial	thin space
zwnj		U+200C (8204)	HTML 4.0	HTMLspecial	zero-width non-joiner
zwj		U+200D (8205)	HTML 4.0	HTMLspecial	zero-width joiner
lrm		U+200E (8206)	HTML 4.0	HTMLspecial	left-to-right mark
rlm		U+200F (8207)	HTML 4.0	HTMLspecial	right-to-left mark
ndash	–	U+2013 (8211)	HTML 4.0	HTMLspecial	en dash
mdash	—	U+2014 (8212)	HTML 4.0	HTMLspecial	em dash
lsquo	‘	U+2018 (8216)	HTML 4.0	HTMLspecial	left single quotation mark
rsquo	’	U+2019 (8217)	HTML 4.0	HTMLspecial	right single quotation mark
sbquo	‚	U+201A (8218)	HTML 4.0	HTMLspecial	single low-9 quotation mark
ldquo	“	U+201C (8220)	HTML 4.0	HTMLspecial	left double quotation mark
rdquo	”	U+201D (8221)	HTML 4.0	HTMLspecial	right double quotation mark
bdquo	„	U+201E (8222)	HTML 4.0	HTMLspecial	double low-9 quotation mark
dagger	†	U+2020 (8224)	HTML 4.0	HTMLspecial	dagger, obelisk
Dagger	‡	U+2021 (8225)	HTML 4.0	HTMLspecial	double dagger, double obelisk
bull	•	U+2022 (8226)	HTML 4.0	HTMLspecial	bullet (black small circle)
hellip	…	U+2026 (8230)	HTML 4.0	HTMLsymbol	horizontal ellipsis (three dot leader)
permil	‰	U+2030 (8240)	HTML 4.0	HTMLspecial	per mille sign
prime	′	U+2032 (8242)	HTML 4.0	HTMLsymbol	prime (minutes, feet)
Prime	″	U+2033 (8243)	HTML 4.0	HTMLsymbol	double prime (seconds, inches)
lsaquo	‹	U+2039 (8249)	HTML 4.0	HTMLspecial	single left-pointing angle quotation mark
rsaquo	›	U+203A (8250)	HTML 4.0	HTMLspecial	single right-pointing angle quotation mark
oline	‾	U+203E (8254)	HTML 4.0	HTMLsymbol	overline (spacing overscore)
frasl	⁄	U+2044 (8260)	HTML 4.0	HTMLsymbol	fraction slash (solidus)
euro	€	U+20AC (8364)	HTML 4.0	HTMLspecial	euro sign
image	ℑ	U+2111 (8465)	HTML 4.0	HTMLsymbol	black-letter capital I (imaginary part)
weierp	℘	U+2118 (8472)	HTML 4.0	HTMLsymbol	script capital P (power set, Weierstrass p)
real	ℜ	U+211C (8476)	HTML 4.0	HTMLsymbol	black-letter capital R (real part symbol)
trade	™	U+2122 (8482)	HTML 4.0	HTMLsymbol	trademark symbol
alefsym	ℵ	U+2135 (8501)	HTML 4.0	HTMLsymbol	alef symbol (first transfinite cardinal)
larr	←	U+2190 (8592)	HTML 4.0	HTMLsymbol	leftwards arrow
uarr	↑	U+2191 (8593)	HTML 4.0	HTMLsymbol	upwards arrow
rarr	→	U+2192 (8594)	HTML 4.0	HTMLsymbol	rightwards arrow
darr	↓	U+2193 (8595)	HTML 4.0	HTMLsymbol	downwards arrow
harr	↔	U+2194 (8596)	HTML 4.0	HTMLsymbol	left right arrow
crarr	↵	U+21B5 (8629)	HTML 4.0	HTMLsymbol	downwards arrow with corner leftwards (carriage return)
lArr	⇐	U+21D0 (8656)	HTML 4.0	HTMLsymbol	leftwards double arrow
uArr	⇑	U+21D1 (8657)	HTML 4.0	HTMLsymbol	upwards double arrow
rArr	⇒	U+21D2 (8658)	HTML 4.0	HTMLsymbol	rightwards double arrow
dArr	⇓	U+21D3 (8659)	HTML 4.0	HTMLsymbol	downwards double arrow
hArr	⇔	U+21D4 (8660)	HTML 4.0	HTMLsymbol	left right double arrow
forall	∀	U+2200 (8704)	HTML 4.0	HTMLsymbol	for all turned A
part	∂	U+2202 (8706)	HTML 4.0	HTMLsymbol	partial differential
exist	∃	U+2203 (8707)	HTML 4.0	HTMLsymbol	there exists
empty	∅	U+2205 (8709)	HTML 4.0	HTMLsymbol	empty set (null set); see also U+8960, ⌀
nabla	∇	U+2207 (8711)	HTML 4.0	HTMLsymbol	del or nabla (vector differential operator)
isin	∈	U+2208 (8712)	HTML 4.0	HTMLsymbol	element of
notin	∉	U+2209 (8713)	HTML 4.0	HTMLsymbol	not an element of
ni	∋	U+220B (8715)	HTML 4.0	HTMLsymbol	contains as member
prod	∏	U+220F (8719)	HTML 4.0	HTMLsymbol	n-ary product (product sign)
sum	∑	U+2211 (8721)	HTML 4.0	HTMLsymbol	n-ary summation]]
minus	−	U+2212 (8722)	HTML 4.0	HTMLsymbol	minus sign
lowast	∗	U+2217 (8727)	HTML 4.0	HTMLsymbol	asterisk operator
radic	√	U+221A (8730)	HTML 4.0	HTMLsymbol	square root (radical sign)
prop	∝	U+221D (8733)	HTML 4.0	HTMLsymbol	proportional to
infin	∞	U+221E (8734)	HTML 4.0	HTMLsymbol	infinity symbol
ang	∠	U+2220 (8736)	HTML 4.0	HTMLsymbol	angle
and	∧	U+2227 (8743)	HTML 4.0	HTMLsymbol	logical and (wedge)
or	∨	U+2228 (8744)	HTML 4.0	HTMLsymbol	logical or (vee)
cap	∩	U+2229 (8745)	HTML 4.0	HTMLsymbol	intersection (cap)
cup	∪	U+222A (8746)	HTML 4.0	HTMLsymbol	union (cup)
int	∫	U+222B (8747)	HTML 4.0	HTMLsymbol	integral
there4	∴	U+2234 (8756)	HTML 4.0	HTMLsymbol	therefore sign
sim	∼	U+223C (8764)	HTML 4.0	HTMLsymbol	tilde operator (varies with, similar to)
cong	≅	U+2245 (8773)	HTML 4.0	HTMLsymbol	congruent to
asymp	≈	U+2248 (8776)	HTML 4.0	HTMLsymbol	almost equal to (asymptotic to)
ne	≠	U+2260 (8800)	HTML 4.0	HTMLsymbol	not equal to
equiv	≡	U+2261 (8801)	HTML 4.0	HTMLsymbol	identical to; sometimes used for 'equivalent to'
le	≤	U+2264 (8804)	HTML 4.0	HTMLsymbol	less-than or equal to
ge	≥	U+2265 (8805)	HTML 4.0	HTMLsymbol	greater-than or equal to
sub	⊂	U+2282 (8834)	HTML 4.0	HTMLsymbol	subset of
sup	⊃	U+2283 (8835)	HTML 4.0	HTMLsymbol	superset of
nsub	⊄	U+2284 (8836)	HTML 4.0	HTMLsymbol	not a subset of
sube	⊆	U+2286 (8838)	HTML 4.0	HTMLsymbol	subset of or equal to
supe	⊇	U+2287 (8839)	HTML 4.0	HTMLsymbol	superset of or equal to
oplus	⊕	U+2295 (8853)	HTML 4.0	HTMLsymbol	circled plus (direct sum)
otimes	⊗	U+2297 (8855)	HTML 4.0	HTMLsymbol	circled times (vector product)
perp	⊥	U+22A5 (8869)	HTML 4.0	HTMLsymbol	up tack (orthogonal to, perpendicular)
sdot	⋅	U+22C5 (8901)	HTML 4.0	HTMLsymbol	dot operator
lceil	⌈	U+2308 (8968)	HTML 4.0	HTMLsymbol	left ceiling (APL upstile)
rceil	⌉	U+2309 (8969)	HTML 4.0	HTMLsymbol	right ceiling
lfloor	⌊	U+230A (8970)	HTML 4.0	HTMLsymbol	left floor (APL downstile)
rfloor	⌋	U+230B (8971)	HTML 4.0	HTMLsymbol	right floor
lang	〈	U+2329 (9001)	HTML 4.0	HTMLsymbol	left-pointing angle bracket (bra)
rang	〉	U+232A (9002)	HTML 4.0	HTMLsymbol	right-pointing angle bracket (ket)
loz	◊	U+25CA (9674)	HTML 4.0	HTMLsymbol	lozenge
spades	♠	U+2660 (9824)	HTML 4.0	HTMLsymbol	black spade suit
clubs	♣	U+2663 (9827)	HTML 4.0	HTMLsymbol	black club suit (shamrock)
hearts	♥	U+2665 (9829)	HTML 4.0	HTMLsymbol	black heart suit (valentine)
diams	♦	U+2666 (9830)	HTML 4.0	HTMLsymbol	black diamond suit

For more information

• Wikipedia article on HTML character entity references.