HTMLの特殊文字について

htmlには「特殊文字」と呼ばれるものがあります。

「特殊文字」とは「それ自体に意味をもっている文字」のことです。

例えば、「＜」はhtmlのタグに使われるものなので、その文字は機械からすると「タグの先頭」という意味を持っています。

なので、「＜」と書いても画面には表示されません。機械に「プログラミングとしての命令の一部」として判断されてしまうからです。

もし、ただの文字として表示をしたい場合には、普通に書かずに「特殊文字」としての「文字表記」で書く必要があります。

1 文字表記の書き方
2 代表的な特殊文字
3 特殊文字一覧

文字表記の書き方

例えば、「＜」を文字として画面に表示する場合、「<」と書きます。

文字表記は必ず「&（アンド、アンパサンドとも言う）」が先頭につき、その後に英数字が続き、「;（セミコロン）」で終わる形式になります。

以下に各特殊文字をただの文字として画面に表示する場合の「文字表記」を記載しますので参考にしてください。

※10進表記、16進表記も記載されていますが、該当の「文字」項目を見つけたら、「文字表記」のブブンをコピペするだけで大丈夫です。

代表的な特殊文字

No.	文字表記	10進表記	16進表記	文字	コメント
001	"	"	"	“””	クォーテーション
002	&	&	&	“&”	アンパサンド
003	<	<	<	“<“	小なり
004	>	>	>	“>”	大なり
005				” “	空白
006	©	©	©	“©”	コピーライト
注1）文字表記は必ず小文字で記述。

特殊文字一覧

No.	文字表記	10進表記	16進表記	文字	コメント	Comment
001	"	"	"	“””	クォーテーション	quotation mark = APL quote
002	&	&	&	“&”	アンパサンド	ampersand
003	<	<	<	“<“	小なり	less-than sign
004	>	>	>	“>”	大なり	greater-than sign
005				” “	空白	no-break space = non-breaking space
006	¡	¡	¡	“¡”		inverted exclamation mark
007	¢	¢	¢	“¢”	セント	cent sign
008	£	£	£	“£”	ポンド	pound sign
009	¤	¤	¤	“¤”		currency sign
010	¥	¥	¥	“¥”	円	yen sign = yuan sign
011	¦	¦	¦	“¦”	縦棒	broken bar = broken vertical bar
012	§	§	§	“§”		section sign
013	¨	¨	¨	“¨”		diaeresis = spacing diaeresis
014	©	©	©	“©”	コピーライト	copyright sign
015	ª	ª	ª	“ª”		feminine ordinal indicator
016	«	«	«	“«”		left-pointing double angle quotation mark = left pointing guillemet
017	¬	¬	¬	“¬”		not sign
018				“”		soft hyphen = discretionary hyphen
019	®	®	®	“®”		registered sign = registered trade mark sign
020	¯	¯	¯	“¯”		macron = spacing macron = overline = APL overbar
021	°	°	°	“°”		degree sign
022	±	±	±	“±”		plus-minus sign = plus-or-minus sign
023	²	²	²	“²”	平方	superscript two = superscript digit two = squared
024	³	³	³	“³”	立方	superscript three = superscript digit three = cubed
025	´	´	´	“´”		acute accent = spacing acute
026	µ	µ	µ	“µ”	マイクロ	micro sign
027	¶	¶	¶	“¶”		pilcrow sign = paragraph sign
028	·	·	·	“·”		middle dot = Georgian comma = Greek middle dot
029	¸	¸	¸	“¸”		cedilla = spacing cedilla
020	¹	¹	¹	“¹”		superscript one = superscript digit one
031	º	º	º	“º”		masculine ordinal indicator
032	»	»	»	“»”		right-pointing double angle quotation mark = right pointing guillemet
033	¼	¼	¼	“¼”		vulgar fraction one quarter = fraction one quarter
034	½	½	½	“½”		vulgar fraction one half = fraction one half
035	¾	¾	¾	“¾”		vulgar fraction three quarters = fraction three quarters
036	¿	¿	¿	“¿”		inverted question mark = turned question mark
037	À	À	À	“À”		latin capital letter A with grave = latin capital letter A grave
038	Á	Á	Á	“Á”		latin capital letter A with acute
039	Â	Â	Â	“Â”		latin capital letter A with circumflex
040	Ã	Ã	Ã	“Ã”		latin capital letter A with tilde
041	Ä	Ä	Ä	“Ä”		latin capital letter A with diaeresis
042	Å	Å	Å	“Å”		latin capital letter A with ring above = latin capital letter A ring
043	Æ	Æ	Æ	“Æ”		latin capital letter AE = latin capital ligature AE
044	Ç	Ç	Ç	“Ç”		latin capital letter C with cedilla
045	È	È	È	“È”		latin capital letter E with grave
046	É	É	É	“É”		latin capital letter E with acute
047	Ê	Ê	Ê	“Ê”		latin capital letter E with circumflex
048	Ë	Ë	Ë	“Ë”		latin capital letter E with diaeresis
049	Ì	Ì	Ì	“Ì”		latin capital letter I with grave
050	Í	Í	Í	“Í”		latin capital letter I with acute
051	Î	Î	Î	“Î”		latin capital letter I with circumflex
052	Ï	Ï	Ï	“Ï”		latin capital letter I with diaeresis
053	Ð	Ð	Ð	“Ð”		latin capital letter ETH
054	Ñ	Ñ	Ñ	“Ñ”		latin capital letter N with tilde
055	Ò	Ò	Ò	“Ò”		latin capital letter O with grave
056	Ó	Ó	Ó	“Ó”		latin capital letter O with acute
057	Ô	Ô	Ô	“Ô”		latin capital letter O with circumflex
058	Õ	Õ	Õ	“Õ”		latin capital letter O with tilde
059	Ö	Ö	Ö	“Ö”		latin capital letter O with diaeresis
060	×	×	×	“×”		multiplication sign
061	Ø	Ø	Ø	“Ø”		latin capital letter O with stroke = latin capital letter O slash
062	Ù	Ù	Ù	“Ù”		latin capital letter U with grave
063	Ú	Ú	Ú	“Ú”		latin capital letter U with acute
064	Û	Û	Û	“Û”		latin capital letter U with circumflex
065	Ü	Ü	Ü	“Ü”		latin capital letter U with diaeresis
066	Ý	Ý	Ý	“Ý”		latin capital letter Y with acute
067	Þ	Þ	Þ	“Þ”		latin capital letter THORN
068	ß	ß	ß	“ß”		latin small letter sharp s = ess-zed
069	à	à	à	“à”		latin small letter a with grave = latin small letter a grave
070	á	á	á	“á”		latin small letter a with acute
071	â	â	â	“â”		latin small letter a with circumflex
072	ã	ã	ã	“ã”		latin small letter a with tilde
073	ä	ä	ä	“ä”		latin small letter a with diaeresis
074	å	å	å	“å”		latin small letter a with ring above = latin small letter a ring
075	æ	æ	æ	“æ”		latin small letter ae = latin small ligature ae
076	ç	ç	ç	“ç”		latin small letter c with cedilla
077	è	è	è	“è”		latin small letter e with grave
078	é	é	é	“é”		latin small letter e with acute
079	ê	ê	ê	“ê”		latin small letter e with circumflex
080	ë	ë	ë	“ë”		latin small letter e with diaeresis
081	ì	ì	ì	“ì”		latin small letter i with grave
082	í	í	í	“í”		latin small letter i with acute
083	î	î	î	“î”		latin small letter i with circumflex
084	ï	ï	ï	“ï”		latin small letter i with diaeresis
085	ð	ð	ð	“ð”		latin small letter eth
086	ñ	ñ	ñ	“ñ”		latin small letter n with tilde
087	ò	ò	ò	“ò”		latin small letter o with grave
088	ó	ó	ó	“ó”		latin small letter o with acute
089	ô	ô	ô	“ô”		latin small letter o with circumflex
090	õ	õ	õ	“õ”		latin small letter o with tilde
091	ö	ö	ö	“ö”		latin small letter o with diaeresis
092	÷	÷	÷	“÷”		division sign
093	ø	ø	ø	“ø”		latin small letter o with stroke, = latin small letter o slash
094	ù	ù	ù	“ù”		latin small letter u with grave
095	ú	ú	ú	“ú”		latin small letter u with acute
096	û	û	û	“û”		latin small letter u with circumflex
097	ü	ü	ü	“ü”		latin small letter u with diaeresis
098	ý	ý	ý	“ý”		latin small letter y with acute
099	þ	þ	þ	“þ”		latin small letter thorn with
100	ÿ	ÿ	ÿ	“ÿ”		latin small letter y with diaeresis
101	&OElig;	Œ	Œ	“?”		latin capital ligature OE
102	&oelig;	œ	œ	“?”		latin small ligature oe
103	&Scaron;	Š	Š	“?”		latin capital letter S with caron
104	&scaron;	š	š	“?”		latin small letter s with caron
105	&Yuml;	Ÿ	Ÿ	“?”		latin capital letter Y with diaeresis
106	&fnof;	ƒ		“?”		latin small f with hook = function = florin
107	&circ;	ˆ	ˆ	“?”		modifier letter circumflex accent
108	&tilde;	˜	˜	“?”		small tilde
109	Α	Α	Α	“Α”		greek capital letter alpha
110	Β	Β	Β	“Β”		greek capital letter beta
111	Γ	Γ	Γ	“Γ”		greek capital letter gamma
112	Δ	Δ	Δ	“Δ”		greek capital letter delta
113	Ε	Ε	Ε	“Ε”		greek capital letter epsilon
114	Ζ	Ζ	Ζ	“Ζ”		greek capital letter zeta
115	Η	Η	Η	“Η”		greek capital letter eta
116	Θ	Θ	Θ	“Θ”		greek capital letter theta
117	Ι	Ι	Ι	“Ι”		greek capital letter iota
118	Κ	Κ	Κ	“Κ”		greek capital letter kappa
119	Λ	Λ	Λ	“Λ”		greek capital letter lambda
120	Μ	Μ	Μ	“Μ”		greek capital letter mu
121	Ν	Ν	Ν	“Ν”		greek capital letter nu
122	Ξ	Ξ	Ξ	“Ξ”		greek capital letter xi
123	Ο	Ο	Ο	“Ο”		greek capital letter omicron
124	Π	Π	Π	“Π”		greek capital letter pi
125	Ρ	Ρ	Ρ	“Ρ”		greek capital letter rho
126	Σ	Σ	Σ	“Σ”		greek capital letter sigma
127	Τ	Τ	Τ	“Τ”		greek capital letter tau
128	Υ	Υ	Υ	“Υ”		greek capital letter upsilon
129	Φ	Φ	Φ	“Φ”		greek capital letter phi
130	Χ	Χ	Χ	“Χ”		greek capital letter chi
131	Ψ	Ψ	Ψ	“Ψ”		greek capital letter psi
132	Ω	Ω	Ω	“Ω”		greek capital letter omega
133	α	α	α	“α”		greek small letter alpha
134	β	β	β	“β”		greek small letter beta
135	γ	γ	γ	“γ”		greek small letter gamma
136	δ	δ	δ	“δ”		greek small letter delta
137	ε	ε	ε	“ε”		greek small letter epsilon
138	ζ	ζ	ζ	“ζ”		greek small letter zeta
139	η	η	η	“η”		greek small letter eta
140	θ	θ	θ	“θ”		greek small letter theta
141	ι	ι	ι	“ι”		greek small letter iota
142	κ	κ	κ	“κ”		greek small letter kappa
143	λ	λ	λ	“λ”		greek small letter lambda
144	μ	μ	μ	“μ”		greek small letter mu
145	ν	ν	ν	“ν”		greek small letter nu
146	ξ	ξ	ξ	“ξ”		greek small letter xi
147	ο	ο	ο	“ο”		greek small letter omicron
148	π	π	π	“π”		greek small letter pi
149	ρ	ρ	ρ	“ρ”		greek small letter rho
150	&sigmaf;	ς	ς	“?”		greek small letter final sigma
151	σ	σ	σ	“σ”		greek small letter sigma
152	τ	τ	τ	“τ”		greek small letter tau
153	υ	υ	υ	“υ”		greek small letter upsilon
154	φ	φ	φ	“φ”		greek small letter phi
155	χ	χ	χ	“χ”		greek small letter chi
156	ψ	ψ	ψ	“ψ”		greek small letter psi
157	ω	ω	ω	“ω”		greek small letter omega
158	&thetasym;	ϑ	ϑ	“?”		greek small letter theta symbol
159	&upsih;	ϒ	ϒ	“?”		greek upsilon with hook symbol
160	ϖ	ϖ	ϓ	“?”		greek pi symbol
161	•	•	•	“?”		bullet = black small circle
162	…	…	…	“…”		horizontal ellipsis = three dot leader
163	′	′	′	“′”		prime = minutes = feet
164	″	″	″	“″”		double prime = seconds = inches
165	&oline;	‾	‾	“?”		overline = spacing overscore
166	&frasl;	⁄	⁄	“?”		fraction slash
167	&weierp;	℘	℘	“?”		script capital P = power set = Weierstrass p
168	&image;	ℑ	ℑ	“?”		blackletter capital I = imaginary part
169	&real;	ℜ	ℜ	“?”		blackletter capital R = real part symbol
170	™	™	™	“™”		trade mark sign
171	&alefsym;	ℵ	ℵ	“?”		alef symbol = first transfinite cardinal
172	←	←	←	“←”		leftwards arrow
173	↑	↑	↑	“↑”		upwards arrow
174	→	→	→	“→”		rightwards arrow
175	↓	↓	↓	“↓”		downwards arrow
176	↔	↔	↔	“?”		left right arrow
177	&crarr;	↵	↵	“?”		downwards arrow with corner leftwards = carriage return
178	⇐	⇐	⇐	“?”		leftwards double arrow
179	&uArr;	⇑	⇑	“?”		upwards double arrow
180	⇒	⇒	⇒	“⇒”		rightwards double arrow
181	&dArr;	⇓	⇓	“?”		downwards double arrow
182	⇔	⇔	⇔	“⇔”		left right double arrow
183	∀	∀	∀	“∀”		for all
184	∂	∂	∂	“∂”		partial differential
185	∃	∃	∃	“∃”		there exists
186	∅	∅	∅	“?”		empty set = null set = diameter
187	∇	∇	∇	“∇”		nabla = backward difference
188	∈	∈	∈	“∈”		element of
189	∉	∉	∉	“?”		not an element of
190	&ni;	∋	∋	“∋”		contains as member
191	∏	∏	∏	“?”		n-ary product = product sign
192	∑	∑	∑	“∑”		n-ary sumation
193	−	−	−	“?”		minus sign
194	&lowast;	∗	∗	“?”		asterisk operator
195	√	√	√	“√”		square root = radical sign
196	&prop;	∝	∝	“∝”		proportional to
197	∞	∞	∞	“∞”		infinity
198	&ang;	∠	∠	“∠”		angle
199	&and;	∧	∧	“∧”		logical and = wedge
200	&or;	∨	∨	“∨”		logical or = vee
201	∩	∩	∩	“∩”		intersection = cap
202	∪	∪	∪	“∪”		union = cup
203	∫	∫	∫	“∫”		integral
204	&there4;	∴	∴	“∴”		therefore
205	&sim;	∼	∼	“?”		tilde operator = varies with = similar to
206	&cong;	≅	≅	“?”		approximately equal to
207	≈	≈	≈	“?”		almost equal to = asymptotic to
208	≠	≠	≠	“≠”		not equal to
209	&equiv;	≡	≡	“≡”		identical to
210	≤	≤	≤	“?”		less-than or equal to
211	≥	≥	≥	“?”		greater-than or equal to
212	⊂	⊂	⊂	“⊂”		subset of
213	⊃	⊃	⊃	“⊃”		superset of
214	&nsub;	⊄	⊄	“?”		not a subset of
215	&sube;	⊆	⊆	“⊆”		subset of or equal to
216	&supe;	⊇	⊇	“⊇”		superset of or equal to
217	&oplus;	⊕	⊕	“?”		circled plus = direct sum
218	&otimes;	⊗	⊗	“?”		circled times = vector product
219	&perp;	⊥	⊥	“⊥”		up tack = orthogonal to = perpendicular
220	⋅	⋅	⋅	“?”		dot operator
221	&lceil;	⌈	⌈	“?”		left ceiling = apl upstile
222	&rceil;	⌉	⌉	“?”		right ceiling
223	&lfloor;	⌊	⌊	“?”		left floor = apl downstile
224	&rfloor;	⌋	⌋	“?”		right floor
225	&lang;	〈	〈	“?”		left-pointing angle bracket = bra
226	&rang;	〉	〉	“?”		right-pointing angle bracket = ket
227	&loz;	◊	◊	“?”		lozenge
228	&spades;	♠	♠	“?”	スペード	black spade suit
229	&clubs;	♣	♣	“?”	クラグ	black club suit = shamrock
230	&hearts;	♥	♥	“?”	ハート	black heart suit = valentine
231	&diams;	♦	♦	“?”	ダイヤ	black diamond suit
232	&ensp;			“?”		en space
233	&emsp;			“?”		em space
234				“?”		thin space
235	&zwnj;	‌	‌	“?”		zero width non-joiner
236	&zwj;	‍	‍	“?”		zero width joiner
237	&lrm;	‎	‎	“?”		left-to-right mark
238	&rlm;	‏	‏	“?”		right-to-left mark
239	–	–	–	“?”		en dash
240	—	—	—	“?”		em dash
241	‘	‘	‘	“‘”		left single quotation mark
242	’	’	’	“’”		right single quotation mark
243	&sbquo;	‚	‚	“?”		single low-9 quotation mark
244	“	“	“	““”		left double quotation mark
245	”	”	”	“””		right double quotation mark
246	&bdquo;	„	„	“?”		double low-9 quotation mark
247	&dagger;	†	†	“†”		dagger
248	&Dagger;	‡	‡	“‡”		double dagger
249	&permil;	‰	‰	“‰”		per mille sign
250	&lsaquo;	‹	‹	“?”		single left-pointing angle quotation mark

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