This is a list of the different character entities commonly used in web development. I’ve found it to be a great resource. The blacked out rows are unused entities and listed for reference only.

char description numeric hex html
  null � %00  
  start of header  %01  
  start of text  %02  
  end of text  %03  
  end of transmission  %04  
  enquiry  %05  
  acknowledgement  %06  
  bell  %07  
  backspace  %08  
  horizontal tab 	 %09  
  linefeed 
 %0A  
  vertical tab  %0B  
  form feed  %0C  
  carriage return 
 %0D  
  shift out  %0E  
  shift in  %0F  
  data link escape  %10  
  xon – device control 1  %11  
  device control 2  %12  
  xoff – device control 3  %13  
  device control 4  %14  
  negative acknowledgement  %15  
  synchronous idle  %16  
  end of transmission block  %17  
  cancel  %18  
  end of medium  %19  
  substitute  %1A  
  escape  %1B  
  file separator  %1C  
  group separator  %1D  
  record separator  %1E  
  unit separator  %1F  
  space   %20  
! exclamation mark ! %21  
double quotation mark " %22 "
# pound # %23  
$ dollar $ %24  
% percent % %25  
& ampersand & %26 &
single quotation mark ' %27  
( left parenthesis ( %28  
) right parenthesis ) %29  
* asterisk * %2A  
+ plus + %2B  
, comma , %2C  
hyphen - %2D  
. period . %2E  
/ forward slash / %2F  
0 0 %30  
1 1 %31  
2 2 %32  
3 3 %33  
4 4 %34  
5 5 %35  
6 6 %36  
7 7 %37  
8 8 %38  
9 9 %39  
: colon : %3A  
; semi-colon &#59; %3B  
< less-than symbol &#60; %3C &lt;
= equal &#61; %3D  
> greater-than symbol &#62; %3E &gt;
? question mark &#63; %3F  
@ at symbol &#64; %40  
A &#65; %41  
B &#66; %42  
C &#67; %43  
D &#68; %44  
E &#69; %45  
F &#70; %46  
G &#71; %47  
H &#72; %48  
I &#73; %49  
J &#74; %4A  
K &#75; %4B  
L &#76; %4C  
M &#77; %4D  
N &#78; %4E  
O &#79; %4F  
P &#80; %50  
Q &#81; %51  
R &#82; %52  
S &#83; %53  
T &#84; %54  
U &#85; %55  
V &#86; %56  
W &#87; %57  
X &#88; %58  
Y &#89; %59  
Z &#90; %5A  
[ left square bracket &#91; %5B  
back slash &#92; %5C  
] right square bracket &#93; %5D  
^ circumflex &#94; %5E  
_ underscore &#95; %5F  
` back-tick &#96; %60  
a &#97; %61  
b &#98; %62  
c &#99; %63  
d &#100; %64  
e &#101; %65  
f &#102; %66  
g &#103; %67  
h &#104; %68  
i &#105; %69  
j &#106; %6A  
k &#107; %6B  
l &#108; %6C  
m &#109; %6D  
n &#110; %6E  
o &#111; %6F  
p &#112; %70  
q &#113; %71  
r &#114; %72  
s &#115; %73  
t &#116; %74  
u &#117; %75  
v &#118; %76  
w &#119; %77  
x &#120; %78  
y &#121; %79  
z &#122; %7A  
{ left curly brace &#123; %7B  
| vertical pipe &#124; %7C  
} right curly brace &#125; %7D  
~ tilde &#126; %7E  
  delete &#127; %7F  
euro &#128; %80  
 &#129; %81  
baseline single quote &#130; %82  
ƒ florin &#131; %83  
baseline double quote &#132; %84  
ellipsis &#133; %85  
single dagger &#134; %86  
double dagger &#135; %87  
ˆ circumflex &#136; %88  
per mil &#137; %89  
Š latin capital letter S with caron &#138; %8A  
left single guillemet &#139; %8B  
Œ latin capital letter OE &#140; %8C  
 &#141; %8D  
Ž latin capital letter Z with caron &#142; %8E  
 &#143; %8F  
 &#144; %90  
open single quote &#145; %91  
close single quote &#146; %92  
open double quote &#147; %93  
close double quote &#148; %94  
bullet &#149; %95  
en dash &#150; %96  
em dash &#151; %97  
˜ tilde &#152; %98  
unregistered trademark &#153; %99  
š latin small letter s with caron &#154; %9A  
right single guillemet &#155; %9B  
œ latin small letter oe &#156; %9C  
 &#157; %9D  
ž latin small letter z with caron &#158; %9E  
Ÿ latin capital letter Y with diaeresis &#159; %9F  
non-breaking space &#160; %A0 &nbsp;
¡ inverted exclamation mark &#161; %A1 &iexcl;
¢ cents &#162; %A2 &cent;
£ pounds &#163; %A3 &pound;
¤ currency &#164; %A4 &curren;
¥ yen &#165; %A5 &yen;
¦ broken vertical bar &#166; %A6 &brvbar;
§ section symbol &#167; %A7 &sect;
¨ spacing diaeresis &#168; %A8 &uml;
© copyright &#169; %A9 &copy;
ª feminine ordinal indicator &#170; %AA &ordf;
« left pointing guillemet &#171; %AB &laquo;
¬ not &#172; %AC &not;
­ soft hyphen &#173; %AD &shy;
® registered trademark &#174; %AE &reg;
¯ spacing macron – overline &#175; %AF &macr;
° degree &#176; %B0 &deg;
± plus-minus &#177; %B1 &plusmn;
² superscript two &#178; %B2 &sup2;
³ superscript three &#179; %B3 &sup3;
´ acute &#180; %B4 &acute;
µ micro &#181; %B5 &micro;
paragraph &#182; %B6 &para;
· middle dot &#183; %B7 &middot;
¸ cedilla &#184; %B8 &cedil;
¹ superscript one &#185; %B9 &sup1;
º masculine ordinal indicator &#186; %BA &ordm;
» right pointing guillemet &#187; %BB &raquo;
¼ fraction one quarter &#188; %BC &frac14;
½ fraction one half &#189; %BD &frac12;
¾ fraction three quarter &#190; %BE &frac34;
¿ inverted question mark &#191; %BF &iquest;
À latin capital letter A with grave &#192; %C0 &Agrave;
Á latin capital letter A with acute &#193; %C1 &Aacute;
 latin capital letter A with circumflex &#194; %C2 &Acirc;
à latin capital letter A with tilde &#195; %C3 &Atilde;
Ä latin capital letter A with diaeresis &#196; %C4 &Auml;
Å latin capital letter A with ring above &#197; %C5 &Aring;
Æ latin capital letter AE &#198; %C6 &AElig;
Ç latin capital letter C with cedilla &#199; %C7 &Ccedil;
È latin capital letter E with grave &#200; %C8 &Egrave;
É latin capital letter E with acute &#201; %C9 &Eacute;
Ê latin capital letter E with circumflex &#202; %CA &Ecirc;
Ë latin capital letter E with diaeresis &#203; %CB &Euml;
Ì latin capital letter I with grave &#204; %CC &Igrave;
Í latin capital letter I with acute &#205; %CD &Iacute;
Î latin capital letter I with circumflex &#206; %CE &Icirc;
Ï latin capital letter I with diaeresis &#207; %CF &Iuml;
Ð latin capital letter ETH &#208; %D0 &ETH;
Ñ latin capital letter N with tilde &#209; %D1 &Ntilde;
Ò latin capital letter O with grave &#210; %D2 &Ograve;
Ó latin capital letter O with acute &#211; %D3 &Oacute;
Ô latin capital letter O with circumflex &#212; %D4 &Ocirc;
Õ latin capital letter O with tilde &#213; %D5 &Otilde;
Ö latin capital letter O with diaeresis &#214; %D6 &Ouml;
× multiplication &#215; %D7 &times;
Ø latin capital letter O with stroke &#216; %D8 &Oslash;
Ù latin capital letter U with grave &#217; %D9 &Ugrave;
Ú latin capital letter U with acute &#218; %DA &Uacute;
Û latin capital letter U with circumflex &#219; %DB &Ucirc;
Ü latin capital letter U with diaeresis &#220; %DC &Uuml;
Ý latin capital letter Y with actue &#221; %DD &Yacute;
Þ latin capital letter THORN &#222; %DE &THORN;
ß latin small letter sharp s &#223; %DF &szlig;
à latin small letter a with grave &#224; %E0 &agrave;
á latin small letter a with acute &#225; %E1 &aacute;
â latin small letter a with circumflex &#226; %E2 &acirc;
ã latin small letter a with tilde &#227; %E3 &atilde;
ä latin small letter a with diaeresis &#228; %E4 &auml;
å latin small letter a with ring above &#229; %E5 &aring;
æ latin small letter ae &#230; %E6 &aelig;
ç latin small letter c with cedilla &#231; %E7 &ccedil;
è latin small letter e with grave &#232; %E8 &egrave;
é latin small letter e with acute &#233; %E9 &eacute;
ê latin small letter e with circumflex &#234; %EA &ecirc;
ë latin small letter e with diaeresis &#235; %EB &euml;
ì latin small letter i with grave &#236; %EC &igrave;
í latin small letter i with acute &#237; %ED &iacute;
î latin small letter i with circumflex &#238; %EE &icirc;
ï latin small letter i with diaeresis &#239; %EF &iuml;
ð latin small letter eth &#240; %F0 &eth;
ñ latin small letter n with tilde &#241; %F1 &ntilde;
ò latin small letter o with grave &#242; %F2 &ograve;
ó latin small letter o with acute &#243; %F3 &oacute;
ô latin small letter o with circumflex &#244; %F4 &ocirc;
õ latin small letter o with tilde &#245; %F5 &otilde;
ö latin small letter o with diaeresis &#246; %F6 &ouml;
÷ division &#247; %F7 &divide;
ø latin small letter o with stroke &#248; %F8 &oslash;
ù latin small letter u with grave &#249; %F9 &ugrave;
ú latin small letter u with acute &#250; %FA &uacute;
û latin small letter u with circumflex &#251; %FB &ucirc;
ü latin small letter u with diaeresis &#252; %FC &uuml;
ý latin small letter y with acute &#253; %FD &yacute;
þ latin small letter thorn &#254; %FE &thorn;
ÿ latin small letter y with diaeresis &#255; %FF &yuml;
Πlatin capital letter OE &#338; %152 &OElig;
œ latin small letter oe &#339; %153 &oelig;
Š latin capital letter S with caron &#352; %160 &Scaron;
š latin small letter s with caron &#353; %161 &scaron;
Ÿ latin capital letter Y with diaeresis &#376; %178 &Yuml;
ƒ latin small f with hook = function = florin &#402; %0192 &fnof;
ˆ circumflex symbol &#710; %2C6 &circ;
˜ small tilde &#732; %2DC &tilde;
Α greek capital letter alpha &#913; %0391 &Alpha;
Β greek capital letter beta &#914; %0392 &Beta;
Γ greek capital letter gamma &#915; %0393 &Gamma;
Δ greek capital letter delta &#916; %0394 &Delta;
Ε greek capital letter epsilon &#917; %0395 &Epsilon;
Ζ greek capital letter zeta &#918; %0396 &Zeta;
Η greek capital letter eta &#919; %0397 &Eta;
Θ greek capital letter theta &#920; %0398 &Theta;
Ι greek capital letter iota &#921; %0399 &Iota;
Κ greek capital letter kappa &#922; %039A &Kappa;
Λ greek capital letter lambda &#923; %039B &Lambda;
Μ greek capital letter mu &#924; %039C &Mu;
Ν greek capital letter nu &#925; %039D &Nu;
Ξ greek capital letter xi &#926; %039E &Xi;
Ο greek capital letter omicron &#927; %039F &Omicron;
Π greek capital letter pi &#928; %03A0 &Pi;
Ρ greek capital letter rho &#929; %03A1 &Rho;
Σ greek capital letter sigma &#931; %03A3 &Sigma;
Τ greek capital letter tau &#932; %03A4 &Tau;
Υ greek capital letter upsilon &#933; %03A5 &Upsilon;
Φ greek capital letter phi &#934; %03A6 &Phi;
Χ greek capital letter chi &#935; %03A7 &Chi;
Ψ greek capital letter psi &#936; %03A8 &Psi;
Ω greek capital letter omega &#937; %03A9 &Omega;
α greek small letter alpha &#945; %03B1 &alpha;
β greek small letter beta &#946; %03B2 &beta;
γ greek small letter gamma &#947; %03B3 &gamma;
δ greek small letter delta &#948; %03B4 &delta;
ε greek small letter epsilon &#949; %03B5 &epsilon;
ζ greek small letter zeta &#950; %03B6 &zeta;
η greek small letter eta &#951; %03B7 &eta;
θ greek small letter theta &#952; %03B8 &theta;
ι greek small letter iota &#953; %03B9 &iota;
κ greek small letter kappa &#954; %03BA &kappa;
λ greek small letter lambda &#955; %03BB &lambda;
μ greek small letter mu &#956; %03BC &mu;
ν greek small letter nu &#957; %03BD &nu;
ξ greek small letter xi &#958; %03BE &xi;
ο greek small letter omicron &#959; %03BF &omicron;
π greek small letter pi &#960; %03C0 &pi;
ρ greek small letter rho &#961; %03C1 &rho;
ς greek small letter final sigma &#962; %03C2 &sigmaf;
σ greek small letter sigma &#963; %03C3 &sigma;
τ greek small letter tau &#964; %03C4 &tau;
υ greek small letter upsilon &#965; %03C5 &upsilon;
φ greek small letter phi &#966; %03C6 &phi;
χ greek small letter chi &#967; %03C7 &chi;
ψ greek small letter psi &#968; %03C8 &psi;
ω greek small letter omega &#969; %03C9 &omega;
ϑ greek small letter theta symbol &#977; %03D1 &thetasym;
ϒ greek upsilon with hook symbol &#978; %03D2 &upsih;
ϖ greek pi symbol &#982; %03D6 &piv;
en space &#8194; %2002 &ensp;
em space &#8195; %2003 &emsp;
thin space &#8201; %2009 &thinsp;
zero width non-joiner &#8204; %200C &zwnj;
zero width joiner &#8205; %200D &zwj;
left-to-right mark &#8206; %200E &lrm;
right-to-left mark &#8207; %200F &rlm;
en dash &#8211; %2013 &ndash;
em dash &#8212; %2014 &mdash;
left single quotation mark &#8216; %2018 &lsquo;
right single quotation mark &#8217; %2019 &rsquo;
single low-9 quotation mark &#8218; %201A &sbquo;
left double quotation mark &#8220; %201C &ldquo;
right double quotation mark &#8221; %201D &rdquo;
double low-9 quotation mark &#8222; %201E &bdquo;
single dagger &#8224; %2020 &dagger;
double dagger &#8225; %2021 &Dagger;
bullet = black small circle &#8226; %2022 &bull;
horizontal ellipsis = three dot leader &#8230; %2026 &hellip;
per mil &#8240; %2030 &permil;
prime = minutes = feet &#8242; %2032 &prime;
double prime = seconds = inches &#8243; %2033 &Prime;
single left-pointing angle quotation mark &#8249; %2039 &lsaquo;
single right-pointing angle quotation mark &#8250; %203A &rsaquo;
overline = spacing overscore &#8254; %203E &oline;
fraction slash &#8260; %2044 &frasl;
euro &#8364; %20AC &euro;
script capital P = power set = Weierstrass p &#8472; %2118 &weierp;
blackletter capital I = imaginary part &#8465; %2111 &image;
blackletter capital R = real part symbol &#8476; %211C &real;
service mark sign &#8480; %2120 &trade;
trade mark sign &#8482; %2122 &trade;
alef symbol = first transfinite cardinal &#8501; %2135 &alefsym;
leftwards arrow &#8592; %2190 &larr;
upwards arrow &#8593; %2191 &uarr;
rightwards arrow &#8594; %2192 &rarr;
downwards arrow &#8595; %2193 &darr;
left right arrow &#8596; %2194 &harr;
downwards arrow with corner leftwards = carriage return &#8629; %21B5 &crarr;
leftwards double arrow &#8656; %21D0 &lArr;
upwards double arrow &#8657; %21D1 &uArr;
rightwards double arrow &#8658; %21D2 &rArr;
downwards double arrow &#8659; %21D3 &dArr;
left right double arrow &#8660; %21D4 &hArr;
for all &#8704; %2200 &forall;
partial differential &#8706; %2202 &part;
there exists &#8707; %2203 &exist;
empty set = null set = diameter &#8709; %2205 &empty;
nabla = backward difference &#8711; %2207 &nabla;
element of &#8712; %2208 &isin;
not an element of &#8713; %2209 &notin;
contains as member &#8715; %220B &ni;
n-ary product = product sign &#8719; %220F &prod;
n-ary sumation &#8721; %2211 &sum;
minus sign &#8722; %2212 &minus;
asterisk operator &#8727; %2217 &lowast;
square root = radical sign &#8730; %221A &radic;
proportional to &#8733; %221D &prop;
infinity &#8734; %221E &infin;
angle &#8736; %2220 &ang;
logical and = wedge &#8743; %2227 &and;
logical or = vee &#8744; %2228 &or;
intersection = cap &#8745; %2229 &cap;
union = cup &#8746; %222A &cup;
integral &#8747; %222B &int;
therefore &#8756; %2234 &there4;
tilde operator = varies with = similar to &#8764; %223C &sim;
approximately equal to &#8773; %2245 &cong;
almost equal to = asymptotic to &#8776; %2248 &asymp;
not equal to &#8800; %2260 &ne;
identical to &#8801; %2261 &equiv;
less-than or equal to &#8804; %2264 &le;
greater-than or equal to &#8805; %2265 &ge;
subset of &#8834; %2282 &sub;
superset of &#8835; %2283 &sup;
not a subset of &#8836; %2284 &nsub;
subset of or equal to &#8838; %2286 &sube;
superset of or equal to &#8839; %2287 &supe;
circled plus = direct sum &#8853; %2295 &oplus;
circled times = vector product &#8855; %2297 &otimes;
up tack = orthogonal to = perpendicular &#8869; %22A5 &perp;
dot operator &#8901; %22C5 &sdot;
left ceiling = apl upstile &#8968; %2308 &lceil;
right ceiling &#8969; %2309 &rceil;
left floor = apl downstile &#8970; %230A &lfloor;
right floor &#8971; %230B &rfloor;
left-pointing angle bracket = bra &#9001; %2329 &lang;
right-pointing angle bracket = ket &#9002; %232A &rang;
lozenge &#9674; %25CA &loz;
spade suit &#9824; %2660 &spades;
club suit &#9827; %2663 &clubs;
heart suit &#9829; %2665 &hearts;
diamond suit &#9830; %2666 &diams;