ASCII Table Reference

Beginner

6 min read

Updated: Oct 2026

Character codes

Definition

What Is the ASCII Table?

The ASCII table maps characters to numbers. ASCII stands for American Standard Code for Information Interchange—an early encoding standard from the 1960s that still underpins English text on computers and the web.

Remember

Keyboard "A"  →  computer stores 65

Standard ASCII:  0–127
Printable:       32–126
Control:         0–31 and 127
Extended (common): 128–255 (encoding-dependent)

When you type A, the computer stores 65, not the letter shape. The ASCII table is the dictionary between numbers and characters.

Mental model

What Does the ASCII Table Contain?

Standard ASCII has 128 characters (0–127). Many references also list extended codes 128–255.

Range (Dec)	Type	Examples
0–31	Control characters	NUL (0), TAB (9), LF (10), CR (13), ESC (27)
32	Space	First printable character
48–57	Digits	`0` through `9`
65–90	Uppercase letters	`A` (65) through `Z` (90)
97–122	Lowercase letters	`a` (97) through `z` (122)
127	Control	DEL (delete)
128–255	Extended ASCII	Varies by encoding

Concepts

Decimal, Hexadecimal & Octal

The same code can be written in different bases. Hex is common because it fits bytes cleanly.

Character	Decimal	Hex	Octal
`A`	65	41	101
`a`	97	61	141
`0`	48	30	60
Space	32	20	40
New line (LF)	10	0A	012

Base	Meaning
Decimal	Base 10 — everyday numbers (65 for A)
Hexadecimal	Base 16 — 0–9 and A–F (41 for A)
Octal	Base 8 — still seen in older Unix contexts

Reference

Full ASCII Table (0–255)

Search by decimal, hex, character, or description. For a filterable tool with copy buttons, use the Interactive ASCII Tool (0–127).

Codes 128–255 depend on the encoding—treat them as a reference, not a universal map.

Filter table

Dec	Hex	Oct	Char	Description
0	00	000	^@	Null (NUL)
1	01	001	^A	Start of heading (SOH)
2	02	002	^B	Start of text (STX)
3	03	003	^C	End of text (ETX)
4	04	004	^D	End of transmission (EOT)
5	05	005	^E	Enquiry (ENQ)
6	06	006	^F	Acknowledge (ACK)
7	07	007	^G	Bell (BEL)
8	08	010	^H	Backspace (BS)
9	09	011	^I	Horizontal tab (HT)
10	0A	012	^J	Line feed (LF)
11	0B	013	^K	Vertical tab (VT)
12	0C	014	^L	New page/form feed (FF)
13	0D	015	^M	Carriage return (CR)
14	0E	016	^N	Shift out (SO)
15	0F	017	^O	Shift in (SI)
16	10	020	^P	Data link escape (DLE)
17	11	021	^Q	Device control 1 (DC1)
18	12	022	^R	Device control 2 (DC2)
19	13	023	^S	Device control 3 (DC3)
20	14	024	^T	Device control 4 (DC4)
21	15	025	^U	Negative acknowledge (NAK)
22	16	026	^V	Synchronous idle (SYN)
23	17	027	^W	End of transmission block (ETB)
24	18	030	^X	Cancel (CAN)
25	19	031	^Y	End of medium (EM)
26	1A	032	^Z	Substitute (SUB)
27	1B	033	^[	Escape (ESC)
28	1C	034	^\	File separator (FS)
29	1D	035	^]	Group separator (GS)
30	1E	036	^^	Record separator (RS)
31	1F	037	^_	Unit separator (US)
32	20	040		Space
33	21	041	!	Exclamation mark
34	22	042	"	Quotation mark/Double quote
35	23	043	#	Number sign
36	24	044	$	Dollar sign
37	25	045	%	Percent sign
38	26	046	&	Ampersand
39	27	047	'	Apostrophe/Single quote
40	28	050	(	Left parenthesis
41	29	051	)	Right parenthesis
42	2A	052	*	Asterisk
43	2B	053	+	Plus sign
44	2C	054	,	Comma
45	2D	055	-	Hyphen/Minus
46	2E	056	.	Full stop/Period
47	2F	057	/	Solidus/Slash
48	30	060	0	Digit zero
49	31	061	1	Digit one
50	32	062	2	Digit two
51	33	063	3	Digit three
52	34	064	4	Digit four
53	35	065	5	Digit five
54	36	066	6	Digit six
55	37	067	7	Digit seven
56	38	070	8	Digit eight
57	39	071	9	Digit nine
58	3A	072	:	Colon
59	3B	073	;	Semicolon
60	3C	074	<	Less-than sign
61	3D	075	=	Equal/Equality sign
62	3E	076	>	Greater-than sign
63	3F	077	?	Question mark
64	40	100	@	Commercial at/At sign
65	41	101	A	Latin capital letter A
66	42	102	B	Latin capital letter B
67	43	103	C	Latin capital letter C
68	44	104	D	Latin capital letter D
69	45	105	E	Latin capital letter E
70	46	106	F	Latin capital letter F
71	47	107	G	Latin capital letter G
72	48	110	H	Latin capital letter H
73	49	111	I	Latin capital letter I
74	4A	112	J	Latin capital letter J
75	4B	113	K	Latin capital letter K
76	4C	114	L	Latin capital letter L
77	4D	115	M	Latin capital letter M
78	4E	116	N	Latin capital letter N
79	4F	117	O	Latin capital letter O
80	50	120	P	Latin capital letter P
81	51	121	Q	Latin capital letter Q
82	52	122	R	Latin capital letter R
83	53	123	S	Latin capital letter S
84	54	124	T	Latin capital letter T
85	55	125	U	Latin capital letter U
86	56	126	V	Latin capital letter V
87	57	127	W	Latin capital letter W
88	58	130	X	Latin capital letter X
89	59	131	Y	Latin capital letter Y
90	5A	132	Z	Latin capital letter Z
91	5B	133	[	Left square bracket
92	5C	134	\	Reverse solidus/Backslash
93	5D	135	]	Right square bracket
94	5E	136	^	Circumflex accent/Caret
95	5F	137	_	Underscore/Low line
96	60	140	`	Grave accent
97	61	141	a	Latin small letter a
98	62	142	b	Latin small letter b
99	63	143	c	Latin small letter c
100	64	144	d	Latin small letter d
101	65	145	e	Latin small letter e
102	66	146	f	Latin small letter f
103	67	147	g	Latin small letter g
104	68	150	h	Latin small letter h
105	69	151	i	Latin small letter i
106	6A	152	j	Latin small letter j
107	6B	153	k	Latin small letter k
108	6C	154	l	Latin small letter l
109	6D	155	m	Latin small letter m
110	6E	156	n	Latin small letter n
111	6F	157	o	Latin small letter o
112	70	160	p	Latin small letter p
113	71	161	q	Latin small letter q
114	72	162	r	Latin small letter r
115	73	163	s	Latin small letter s
116	74	164	t	Latin small letter t
117	75	165	u	Latin small letter u
118	76	166	v	Latin small letter v
119	77	167	w	Latin small letter w
120	78	170	x	Latin small letter x
121	79	171	y	Latin small letter y
122	7A	172	z	Latin small letter z
123	7B	173	{	Left curly bracket
124	7C	174	\|	Vertical line/Vertical bar
125	7D	175	}	Right curly bracket
126	7E	176	~	Tilde
127	7F	177	DEL	Delete (DEL)
128	80	200
129	81	201
130	82	202
131	83	203
132	84	204
133	85	205
134	86	206
135	87	207
136	88	210
137	89	211
138	8A	212
139	8B	213
140	8C	214
141	8D	215
142	8E	216
143	8F	217
144	90	220
145	91	221
146	92	222
147	93	223
148	94	224
149	95	225
151	97	227
152	98	230
153	99	231
154	9A	232
155	9B	233
156	9C	234
157	9D	235
158	9E	236
159	9F	237
160	A0	240		No-break space
161	A1	241	¡	Inverted exclamation mark
162	A2	242	¢	Cent sign
163	A3	243	£	Pound sign
164	A4	244	¤	Currency sign
165	A5	245	¥	Yen/Yuan sign
166	A6	246	¦	Broken bar
167	A7	247	§	Section sign
168	A8	250	¨	Diaeresis
169	A9	251	©	Copyright sign
170	AA	252	ª	Feminine ordinal indicator
171	AB	253	«	Left-pointing double angle quotation mark
172	AC	254	¬	Not sign
173	AD	255		Soft hyphen
174	AE	256	®	Registered trademark sign
175	AF	257	¯	Macron
176	B0	260	°	Degree sign
177	B1	261	±	Plus-minus sign
178	B2	262	²	Superscript two
179	B3	263	³	Superscript three
180	B4	264	´	Acute accent
181	B5	265	µ	Micro sign (mu)
182	B6	266	¶	Pilcrow sign
183	B7	267	·	Middle dot
184	B8	270	¸	Cedilla
185	B9	271	¹	Superscript one
186	BA	272	º	Masculine ordinal indicator
187	BB	273	»	Right-pointing double angle quotation mark
188	BC	274	¼	Vulgar fraction one quarter
189	BD	275	½	Vulgar fraction one half
190	BE	276	¾	Vulgar fraction three quarters
191	BF	277	¿	Inverted question mark
192	C0	300	À	Latin capital letter A with grave
193	C1	301	Á	Latin capital letter A with acute
194	C2	302	Â	Latin capital letter A with circumflex
195	C3	303	Ã	Latin capital letter A with tilde
196	C4	304	Ä	Latin capital letter A with diaeresis
197	C5	305	Å	Latin capital letter A with ring above
198	C6	306	Æ	Latin capital letter AE
199	C7	307	Ç	Latin capital letter C with cedilla
200	C8	310	È	Latin capital letter E with grave
201	C9	311	É	Latin capital letter E with acute
202	CA	312	Ê	Latin capital letter E with circumflex
203	CB	313	Ë	Latin capital letter E with diaeresis
204	CC	314	Ì	Latin capital letter I with grave
205	CD	315	Í	Latin capital letter I with acute
206	CE	316	Î	Latin capital letter I with circumflex
207	CF	317	Ï	Latin capital letter I with diaeresis
208	D0	320	Ð	Latin capital letter ETH
209	D1	321	Ñ	Latin capital letter N with tilde
210	D2	322	Ò	Latin capital letter O with grave
211	D3	323	Ó	Latin capital letter O with acute
212	D4	324	Ô	Latin capital letter O with circumflex
213	D5	325	Õ	Latin capital letter O with tilde
214	D6	326	Ö	Latin capital letter O with diaeresis
215	D7	327	×	Multiplication sign
216	D8	330	Ø	Latin capital letter O with stroke
217	D9	331	Ù	Latin capital letter U with grave
218	DA	332	Ú	Latin capital letter U with acute
219	DB	333	Û	Latin capital letter U with circumflex
220	DC	334	Ü	Latin capital letter U with diaeresis
221	DD	335	Ý	Latin capital letter Y with acute
222	DE	336	Þ	Latin capital letter THORN
223	DF	337	ß	Latin small letter sharp s
224	E0	340	à	Latin small letter a with grave
225	E1	341	á	Latin small letter a with acute
226	E2	342	â	Latin small letter a with circumflex
227	E3	343	ã	Latin small letter a with tilde
228	E4	344	ä	Latin small letter a with diaeresis
229	E5	345	å	Latin small letter a with ring above
230	E6	346	æ	Latin small letter ae
231	E7	347	ç	Latin small letter c with cedilla
232	E8	350	è	Latin small letter e with grave
233	E9	351	é	Latin small letter e with acute
234	EA	352	ê	Latin small letter e with circumflex
235	EB	353	ë	Latin small letter e with diaeresis
236	EC	354	ì	Latin small letter i with grave
237	ED	355	í	Latin small letter i with acute
238	EE	356	î	Latin small letter i with circumflex
239	EF	357	ï	Latin small letter i with diaeresis
240	F0	360	ð	Latin small letter eth
241	F1	361	ñ	Latin small letter n with tilde
242	F2	362	ò	Latin small letter o with grave
243	F3	363	ó	Latin small letter o with acute
244	F4	364	ô	Latin small letter o with circumflex
245	F5	365	õ	Latin small letter o with tilde
246	F6	366	ö	Latin small letter o with diaeresis
247	F7	367	÷	Division sign/Obelus
248	F8	370	ø	Latin small letter o with stroke
249	F9	371	ù	Latin small letter u with grave
250	FA	372	ú	Latin small letter u with acute
251	FB	373	û	Latin small letter u with circumflex
252	FC	374	ü	Latin small letter u with diaeresis
253	FD	375	ý	Latin small letter y with acute
254	FE	376	þ	Latin small letter thorn
255	FF	377	ÿ	Latin small letter y with diaeresis

Compare

ASCII vs Unicode

Modern web text almost always uses Unicode (UTF-8). ASCII is still the first chapter of that story.

ASCII	Unicode / UTF-8
128 standard characters	Over a million code points
English letters, digits, symbols	All languages, emoji, math symbols
One byte per character	ASCII stays one byte; others use more
Legacy foundation	Web default encoding today

Unicode code points 0–127 match ASCII. A plain ASCII file is valid UTF-8. Prefer <meta charset="UTF-8"> on every HTML page.

Hands-on

Use ASCII Codes in HTML and JavaScript

Numeric entities in HTML and charCodeAt / fromCharCode in JavaScript are the everyday tools.

HTML

<p>Letter A: &#65;</p>
<p>Same letter (hex): &#x41;</p>
<p>Copyright: &#169;</p>

Try It Yourself

JavaScript

console.log("A".charCodeAt(0));       // 65
console.log(String.fromCharCode(65)); // "A"
console.log("a".charCodeAt(0));       // 97

Try It Yourself

How It Works

1. HTML entities. A is decimal; A is hex. The browser shows the character for that code.

2. JavaScript lookup. charCodeAt(0) returns the code for a character; fromCharCode builds a character from a code.

3. Same mapping. Both paths use the ASCII/Unicode number for A (65). Named entities are covered in HTML Entities.

Applications

Common ASCII Codes

Codes you will meet often while debugging text and protocols:

Character	Dec	Hex	Notes
Space	32	20	First printable character
`0`–`9`	48–57	30–39	Digits
`A`–`Z`	65–90	41–5A	Uppercase letters
`a`–`z`	97–122	61–7A	Lowercase letters
Tab	9	09	Horizontal tab (HT)
New line	10	0A	Line feed (LF)
Carriage return	13	0D	Often paired with LF on Windows

Remember

Key Takeaways

ASCII maps characters to numbers—standard codes are 0–127.
Printable range: 32–126; control codes are 0–31 and 127.
Remember: A = 65 (hex 41); a = 97 (hex 61).
Today: use UTF-8; it includes ASCII as its first 128 codes.

One line: ASCII is the number dictionary for basic text—next, learn HTML entities or browse MIME types.

Frequently Asked Questions

What is an ASCII table?

An ASCII table lists every character in the American Standard Code for Information Interchange with its numeric code in decimal, hexadecimal, and often octal. Computers store text as these numbers.

How many characters are in standard ASCII?

Standard ASCII defines 128 characters numbered 0 through 127. Codes 0–31 and 127 are control characters. Codes 32–126 are printable characters.

What is extended ASCII?

Extended ASCII usually means codes 128–255 for extra symbols and accented letters. The exact set depends on the encoding. Modern web pages use UTF-8, which includes ASCII as its first 128 codes.

What is the ASCII code for the letter A?

Uppercase A is decimal 65 (hex 41). Lowercase a is decimal 97 (hex 61). Uppercase letters are 65–90; lowercase are 97–122.

How do I use ASCII codes in HTML?

Use numeric character references: A (decimal) or A (hex) for A. Named entities like © cover some common symbols. See the HTML Entities tutorial for more.

Is ASCII the same as Unicode?

Unicode is much larger. The first 128 Unicode code points match ASCII. UTF-8 stores ASCII characters in one byte, so plain ASCII text is valid UTF-8.

Did you know?

Standard ASCII uses codes 0–127. Code 65 is uppercase A; code 97 is lowercase a. In HTML write A or A to display A.

Next: MIME Types

Learn the media type strings browsers and servers use for files.

MIME types →

About the author

Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

Experience 12 years building web and cloud systems
Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

AWS Certified Developer – Associate (Credly)

8 people found this page helpful

HTML Entities MIME Types