All 128 ASCII codes in decimal, hex, octal and 8-bit binary HTML numeric entities for every character Names of all control characters and C escapes such as \n, \t and \r Search by character, decimal, hex (0x41) or description Filter control codes, punctuation, digits and letters

ASCII Table

Search by character, number (65, 0x41) or name, or filter by group.

Dec	Hex	Oct	Binary	Char	HTML	Description
0	0x00	000	00000000	NUL		Null`\0`
1	0x01	001	00000001	SOH		Start of Heading
2	0x02	002	00000010	STX		Start of Text
3	0x03	003	00000011	ETX		End of Text
4	0x04	004	00000100	EOT		End of Transmission
5	0x05	005	00000101	ENQ		Enquiry
6	0x06	006	00000110	ACK		Acknowledge
7	0x07	007	00000111	BEL		Bell`\a`
8	0x08	010	00001000	BS		Backspace`\b`
9	0x09	011	00001001	HT		Horizontal Tab`\t`
10	0x0A	012	00001010	LF		Line Feed (new line)`\n`
11	0x0B	013	00001011	VT		Vertical Tab`\v`
12	0x0C	014	00001100	FF		Form Feed`\f`
13	0x0D	015	00001101	CR		Carriage Return`\r`
14	0x0E	016	00001110	SO		Shift Out
15	0x0F	017	00001111	SI		Shift In
16	0x10	020	00010000	DLE		Data Link Escape
17	0x11	021	00010001	DC1		Device Control 1 (XON)
18	0x12	022	00010010	DC2		Device Control 2
19	0x13	023	00010011	DC3		Device Control 3 (XOFF)
20	0x14	024	00010100	DC4		Device Control 4
21	0x15	025	00010101	NAK		Negative Acknowledge
22	0x16	026	00010110	SYN		Synchronous Idle
23	0x17	027	00010111	ETB		End of Transmission Block
24	0x18	030	00011000	CAN		Cancel
25	0x19	031	00011001	EM		End of Medium
26	0x1A	032	00011010	SUB		Substitute
27	0x1B	033	00011011	ESC		Escape`\e`
28	0x1C	034	00011100	FS		File Separator
29	0x1D	035	00011101	GS		Group Separator
30	0x1E	036	00011110	RS		Record Separator
31	0x1F	037	00011111	US		Unit Separator
32	0x20	040	00100000	SP		Space
33	0x21	041	00100001	!	!	Exclamation mark
34	0x22	042	00100010	"	"	Double quote
35	0x23	043	00100011	#	#	Number sign (hash)
36	0x24	044	00100100	$	$	Dollar sign
37	0x25	045	00100101	%	%	Percent sign
38	0x26	046	00100110	&	&	Ampersand
39	0x27	047	00100111	'	'	Apostrophe (single quote)
40	0x28	050	00101000	(	(	Left parenthesis
41	0x29	051	00101001	)	)	Right parenthesis
42	0x2A	052	00101010	*	*	Asterisk
43	0x2B	053	00101011	+	+	Plus sign
44	0x2C	054	00101100	,	,	Comma
45	0x2D	055	00101101	-	-	Hyphen-minus
46	0x2E	056	00101110	.	.	Full stop (period, dot)
47	0x2F	057	00101111	/	/	Slash
48	0x30	060	00110000	0	0	Digit 0
49	0x31	061	00110001	1	1	Digit 1
50	0x32	062	00110010	2	2	Digit 2
51	0x33	063	00110011	3	3	Digit 3
52	0x34	064	00110100	4	4	Digit 4
53	0x35	065	00110101	5	5	Digit 5
54	0x36	066	00110110	6	6	Digit 6
55	0x37	067	00110111	7	7	Digit 7
56	0x38	070	00111000	8	8	Digit 8
57	0x39	071	00111001	9	9	Digit 9
58	0x3A	072	00111010	:	:	Colon
59	0x3B	073	00111011	;	;	Semicolon
60	0x3C	074	00111100	<	<	Less-than sign
61	0x3D	075	00111101	=	=	Equals sign
62	0x3E	076	00111110	>	>	Greater-than sign
63	0x3F	077	00111111	?	?	Question mark
64	0x40	100	01000000	@	@	At sign
65	0x41	101	01000001	A	A	Uppercase letter A
66	0x42	102	01000010	B	B	Uppercase letter B
67	0x43	103	01000011	C	C	Uppercase letter C
68	0x44	104	01000100	D	D	Uppercase letter D
69	0x45	105	01000101	E	E	Uppercase letter E
70	0x46	106	01000110	F	F	Uppercase letter F
71	0x47	107	01000111	G	G	Uppercase letter G
72	0x48	110	01001000	H	H	Uppercase letter H
73	0x49	111	01001001	I	I	Uppercase letter I
74	0x4A	112	01001010	J	J	Uppercase letter J
75	0x4B	113	01001011	K	K	Uppercase letter K
76	0x4C	114	01001100	L	L	Uppercase letter L
77	0x4D	115	01001101	M	M	Uppercase letter M
78	0x4E	116	01001110	N	N	Uppercase letter N
79	0x4F	117	01001111	O	O	Uppercase letter O
80	0x50	120	01010000	P	P	Uppercase letter P
81	0x51	121	01010001	Q	Q	Uppercase letter Q
82	0x52	122	01010010	R	R	Uppercase letter R
83	0x53	123	01010011	S	S	Uppercase letter S
84	0x54	124	01010100	T	T	Uppercase letter T
85	0x55	125	01010101	U	U	Uppercase letter U
86	0x56	126	01010110	V	V	Uppercase letter V
87	0x57	127	01010111	W	W	Uppercase letter W
88	0x58	130	01011000	X	X	Uppercase letter X
89	0x59	131	01011001	Y	Y	Uppercase letter Y
90	0x5A	132	01011010	Z	Z	Uppercase letter Z
91	0x5B	133	01011011	[	[	Left square bracket
92	0x5C	134	01011100	\	\	Backslash
93	0x5D	135	01011101	]	]	Right square bracket
94	0x5E	136	01011110	^	^	Caret (circumflex)
95	0x5F	137	01011111	_	_	Underscore
96	0x60	140	01100000	`	`	Grave accent (backtick)
97	0x61	141	01100001	a	a	Lowercase letter a
98	0x62	142	01100010	b	b	Lowercase letter b
99	0x63	143	01100011	c	c	Lowercase letter c
100	0x64	144	01100100	d	d	Lowercase letter d
101	0x65	145	01100101	e	e	Lowercase letter e
102	0x66	146	01100110	f	f	Lowercase letter f
103	0x67	147	01100111	g	g	Lowercase letter g
104	0x68	150	01101000	h	h	Lowercase letter h
105	0x69	151	01101001	i	i	Lowercase letter i
106	0x6A	152	01101010	j	j	Lowercase letter j
107	0x6B	153	01101011	k	k	Lowercase letter k
108	0x6C	154	01101100	l	l	Lowercase letter l
109	0x6D	155	01101101	m	m	Lowercase letter m
110	0x6E	156	01101110	n	n	Lowercase letter n
111	0x6F	157	01101111	o	o	Lowercase letter o
112	0x70	160	01110000	p	p	Lowercase letter p
113	0x71	161	01110001	q	q	Lowercase letter q
114	0x72	162	01110010	r	r	Lowercase letter r
115	0x73	163	01110011	s	s	Lowercase letter s
116	0x74	164	01110100	t	t	Lowercase letter t
117	0x75	165	01110101	u	u	Lowercase letter u
118	0x76	166	01110110	v	v	Lowercase letter v
119	0x77	167	01110111	w	w	Lowercase letter w
120	0x78	170	01111000	x	x	Lowercase letter x
121	0x79	171	01111001	y	y	Lowercase letter y
122	0x7A	172	01111010	z	z	Lowercase letter z
123	0x7B	173	01111011	{	{	Left curly brace
124	0x7C	174	01111100	\|	\|	Vertical bar (pipe)
125	0x7D	175	01111101	}	}	Right curly brace
126	0x7E	176	01111110	~	~	Tilde
127	0x7F	177	01111111	DEL		Delete

What is ASCII?

ASCII (American Standard Code for Information Interchange), published in 1963, assigns a number from 0 to 127 to each English letter, digit, punctuation mark and a set of control codes, so that every 7-bit value means the same character on every computer. Codes 0 to 31 and 127 are control characters such as line feed (10), carriage return (13), tab (9) and escape (27); 32 is the space; 33 to 126 are printable. UTF-8, the encoding used by almost every website today, keeps these first 128 code points byte-for-byte identical, which is why ASCII values still matter when you work with bytes, protocols, regular expressions or keyboard input.

Features

• All 128 ASCII codes in decimal, hex, octal and 8-bit binary
• HTML numeric entities for every character
• Names of all control characters and C escapes such as \n, \t and \r
• Search by character, decimal, hex (0x41) or description
• Filter control codes, punctuation, digits and letters

Quick reference

The whole table is part of the page and the search runs in your browser, so it works instantly and offline.

Searchable, printable, no tracking.

How to use the ASCII Table

1
Type what you know in the search box: a character (A), a decimal code (65), a hex code (0x41 or 41), or a word such as "tab" or "bracket".
2
Use the group chips to show only control characters, punctuation, digits, uppercase or lowercase letters.
3
Read the row: decimal, hex, octal, 8-bit binary, the character, its HTML entity and a description. Control characters also show their C escape such as \n.
4
On wide screens all columns are visible; on phones octal, binary and HTML columns are hidden to keep the table readable.

Practical examples

Converting case with arithmetic

Uppercase A is 65 and lowercase a is 97: the difference is always 32 (bit 5), which is how many case-conversion routines work.

Debugging line endings

A file that shows ^M in vim has CR (13) before LF (10): Windows line endings CRLF instead of Unix LF. Use the table to recognize 0x0D and 0x0A in hex dumps.

Escaping in HTML

Use < and > (or < and >) to show < and > as text, and & for &, so the browser does not read them as markup.

Parsing digits fast

Digits 0 to 9 are codes 48 to 57, so char code minus 48 gives the numeric value, a common trick in parsers and coding interviews.

Frequently asked questions

What is the difference between ASCII and Unicode?+

ASCII defines 128 characters. Unicode defines over 150,000, covering every writing system and emoji. The first 128 Unicode code points are exactly ASCII, and UTF-8 encodes them as the same single bytes.

What is extended ASCII (128 to 255)?+

There is no single extended ASCII. Code pages such as Latin-1 (ISO 8859-1) or Windows-1252 assign different characters to 128 to 255. Modern systems use UTF-8 instead, where those bytes start multi-byte sequences.

What are CR and LF?+

CR (13, \r) moves the cursor to the start of the line and LF (10, \n) moves to the next line. Unix and macOS end lines with LF, Windows with CR+LF, and HTTP headers require CRLF.

Why is DEL 127?+

On punched paper tape, punching all seven holes (1111111 in binary, 127) erased a character, so DEL got the highest code.