Símbolo Em HTML Descrição
←flecha para esquerda
↑flecha para cima
→flecha para direita
↓flecha para baixo
↔flecha para esquerda/direita
↵carriage return
⇐flecha dupla para esquerda
⇑flecha dupla para cima
⇒flecha dupla para direita
⇓flecha dupla para baixo
⇔flecha dupla para esquerda/direita

Símbolos de Dinheiro
Símbolo Em HTML Descrição
¤¤Generic Currency Symbol
££Pound Sterling
¥¥Yen / Yuan

Símbolo Em HTML Descrição
¡¡ponto de exclamação invertido
««left-pointing double angle quotation mark
»»right-pointing double angle quotation mark
¿¿inverted question mark = turned question mark
–en dash
—em dash
‘left single quotation mark
’right single quotation mark
‚single low-9 quotation mark
“left double quotation mark
”right double quotation mark
„double low-9 quotation mark
‹single left-pointing angle quotation mark
›single right-pointing angle quotation mark
′Prime = minutes = feet
″Double prime = seconds = inches
‾Overline = spacing overscore

Sinais em Geral
Símbolo Em HTML Descrição
  espaço em branco
¦¦broken bar = broken vertical bar
§§section sign
¨¨diaeresis = spacing diaeresis
©©copyright sign
®®registered sign = registered trade mark sign
™trade mark sign
ªªfeminine ordinal indicator
ººmasculine ordinal indicator
¯¯macron = spacing macron = overline = APL overbar
°°degree sign
¹¹superscript one = superscript digit one
²²superscript two = superscript digit two = squared
³³superscript three = superscript digit three = cubed
´´acute accent = spacing acute
µµmicro sign
¶pilcrow sign = paragraph sign
··middle dot = Georgian comma
¸¸cedilla = spacing cedilla
‡double dagger
‰per mille sign
ˆˆmodifier letter circumflex accent
˜˜small tilde
•bullet = black small circle (bullet is NOT the same as bullet operator)
…horizontal ellipsis = three dot leader
♠Black spade suit
♣Black club suit = shamrock
♥Black heart suit = valentine
♦Black diamond suit

Símbolos Matemáticos
Símbolo Em HTML Descrição
¼&frac14;Um quarto
½&frac12;Uma metade
¾&frac34;Três quartos
+ Mais
= Igual a
&ne;Não igual a
&radic;Raiz quadrada
&frasl;Barra fração
&weierp;Script capital P = power set = Weierstrass p
&image;Parte imaginaria
&real;Parte real
&alefsym;Alef = first transfinite cardinal
&lceil;Left ceiling = apl upstile
&rceil;Right ceiling
&lfloor;Left floor = apl downstile
&rfloor;Right floor
&lang;Left-pointing angle bracket = bra
&rang;Right-pointing angle bracket = ket

Operadores Matemáticos e Relações
Símbolo Em HTML Descrição
&forall;For all
&part;Partial differential
&exist;There exists
&empty;Empty set = null set = diameter
&nabla;Nabla = backward difference
&isin;Element of
&notin;Not an element of
&ni;Contains as member = "such that"
&prod;N-ary product = product sign
&sum;N-ary sumation
&lowast;Asterisk operator
&prop;Proportional to
&and;Logical and = wedge
&or;Logical or = vee
&cap;Intersection = cap
&cup;Union = cup
&sim;Tilde operator = varies with = similar to
&cong;Approximately equal to
&asymp;Almost equal to = asymptotic to
&equiv;Identical to
&le;Less-than or equal to
&ge;Greater-than or equal to
&sub;Subset of
&sup;Superset of
&nsub;Not a subset of
&sube;Subset of or equal to
&supe;Superset of or equal to
&oplus;Circled plus = direct sum
&otimes;Circled times = vector product
&perp;Up tack = orthogonal to = perpendicular
&sdot;Dot operator