ASCII Table

Every ASCII character with its decimal, hex, octal, binary and HTML code, and a lookup for any character.

Look up a character, a code or a name

Codes in any base — 65, 0x41, 0b1000001, 0o101 or A — and names like newline, DEL or question mark. Beyond 127, any Unicode code point comes back with its UTF-8 bytes.

Every character, 0 to 127

Dec	Hex	Char	Name	Description
0	00	^@	Null · NUL	Nothing at all: a byte of zero. C ends its strings with it.
1	01	^A	Start of Heading · SOH	Start of heading: opens the header of a transmission.
2	02	^B	Start of Text · STX	Start of text: closes the header and opens the message.
3	03	^C	End of Text · ETX	End of text: closes the message. Ctrl+C sends it to interrupt a program.
4	04	^D	End of Transmission · EOT	End of transmission: there is no more. Ctrl+D ends shell input the same way.
5	05	^E	Enquiry · ENQ	Enquiry: asks the far end to answer with its identity.
6	06	^F	Acknowledge · ACK	Acknowledge: received, go ahead.
7	07	^G	Bell · BEL	Bell: makes the terminal beep.
8	08	^H	Backspace · BS	Backspace: moves the cursor one place back.
9	09	^I	Horizontal Tab · HT	Horizontal tab: jumps to the next tab stop. It is \t in strings.
10	0A	^J	Line Feed · LF	Line feed: down one line. The newline of Unix text, and \n in strings.
11	0B	^K	Vertical Tab · VT	Vertical tab: down to the next vertical tab stop. It is \v in strings.
12	0C	^L	Form Feed · FF	Form feed: pushes a fresh page. It is \f in strings.
13	0D	^M	Carriage Return · CR	Carriage return: back to the start of the line. Windows ends its lines with CR then LF.
14	0E	^N	Shift Out · SO	Shift out: switches to the alternative character set until Shift In arrives.
15	0F	^O	Shift In · SI	Shift in: switches back to the standard character set.
16	10	^P	Data Link Escape · DLE	Data link escape: the next byte is a link command, not data.
17	11	^Q	Device Control 1 · DC1	Device control 1: XON — resumes output that XOFF paused. Ctrl+Q.
18	12	^R	Device Control 2 · DC2	Device control 2: in paper-tape days, switched the reader back on.
19	13	^S	Device Control 3 · DC3	Device control 3: XOFF — pauses output until XON arrives. Ctrl+S still does it in terminals.
20	14	^T	Device Control 4 · DC4	Device control 4: in paper-tape days, switched the reader off.
21	15	^U	Negative Acknowledge · NAK	Negative acknowledge: received, but wrong — send it again.
22	16	^V	Synchronous Idle · SYN	Synchronous idle: a filler that keeps a synchronous line in step.
23	17	^W	End of Transmission Block · ETB	End of transmission block: a block of data ends here.
24	18	^X	Cancel · CAN	Cancel: throws away what was sent since the last block.
25	19	^Y	End of Medium · EM	End of medium: the tape or paper has run out.
26	1A	^Z	Substitute · SUB	Substitute: stands in for a character that arrived damaged. Ctrl+Z ends input on Windows.
27	1B	^[	Escape · ESC	Escape: what follows is a command, not text. Ctrl+[ is the Esc key’s code.
28	1C	^\	File Separator · FS	File separator: divides files in a stream of data.
29	1D	^]	Group Separator · GS	Group separator: divides groups of records.
30	1E	^^	Record Separator · RS	Record separator: divides records within a group.
31	1F	^_	Unit Separator · US	Unit separator: divides fields within a record.
32	20	␣	Space · SP	The space between words. Invisible, but it takes a byte like any other character.
33	21	!	Exclamation mark
34	22	"	Quotation mark
35	23	#	Number sign
36	24	$	Dollar sign
37	25	%	Percent sign
38	26	&	Ampersand
39	27	'	Apostrophe
40	28	(	Left parenthesis
41	29	)	Right parenthesis
42	2A	*	Asterisk
43	2B	+	Plus sign
44	2C	,	Comma
45	2D	-	Hyphen
46	2E	.	Full stop
47	2F	/	Solidus
48	30	0	Digit zero
49	31	1	Digit one
50	32	2	Digit two
51	33	3	Digit three
52	34	4	Digit four
53	35	5	Digit five
54	36	6	Digit six
55	37	7	Digit seven
56	38	8	Digit eight
57	39	9	Digit nine
58	3A	:	Colon
59	3B	;	Semicolon
60	3C	<	Less-than sign
61	3D	=	Equals sign
62	3E	>	Greater-than sign
63	3F	?	Question mark
64	40	@	Commercial at
65	41	A	Capital A
66	42	B	Capital B
67	43	C	Capital C
68	44	D	Capital D
69	45	E	Capital E
70	46	F	Capital F
71	47	G	Capital G
72	48	H	Capital H
73	49	I	Capital I
74	4A	J	Capital J
75	4B	K	Capital K
76	4C	L	Capital L
77	4D	M	Capital M
78	4E	N	Capital N
79	4F	O	Capital O
80	50	P	Capital P
81	51	Q	Capital Q
82	52	R	Capital R
83	53	S	Capital S
84	54	T	Capital T
85	55	U	Capital U
86	56	V	Capital V
87	57	W	Capital W
88	58	X	Capital X
89	59	Y	Capital Y
90	5A	Z	Capital Z
91	5B	[	Left square bracket
92	5C	\	Backslash
93	5D	]	Right square bracket
94	5E	^	Circumflex accent
95	5F	_	Underscore
96	60	`	Grave accent
97	61	a	Small a
98	62	b	Small b
99	63	c	Small c
100	64	d	Small d
101	65	e	Small e
102	66	f	Small f
103	67	g	Small g
104	68	h	Small h
105	69	i	Small i
106	6A	j	Small j
107	6B	k	Small k
108	6C	l	Small l
109	6D	m	Small m
110	6E	n	Small n
111	6F	o	Small o
112	70	p	Small p
113	71	q	Small q
114	72	r	Small r
115	73	s	Small s
116	74	t	Small t
117	75	u	Small u
118	76	v	Small v
119	77	w	Small w
120	78	x	Small x
121	79	y	Small y
122	7A	z	Small z
123	7B	{	Left curly bracket
124	7C	\|	Vertical bar
125	7D	}	Right curly bracket
126	7E	~	Tilde
127	7F	^?	Delete · DEL	Delete: in paper-tape days it punched every hole to erase a character. Now it erases.

Codes 0–31 and 127 are the control characters: they print nothing, so the table shows their caret notation and abbreviation instead. Codes 128 to 255 are not ASCII at all — look one up above and it arrives as a Unicode code point with its UTF-8 bytes.

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How to use it

The full chart is under Every character, 0 to 127: decimal, hex, the character, its name and what each control character does.

To look one up, type into Look up a character, a code or a name:

one character: A, é, €, or a single space
a code in any base: 65, 0x41, 0b1000001, 0o101, or an HTML reference like A or A
a name, abbreviation or everyday word: line feed, LF, newline, enter, less than sign

A card shows its decimal, hexadecimal, octal and binary values, HTML reference and UTF-8 bytes, and Copy the character copies it. Part of a name, three letters or more, lists every match: feed finds Line Feed and Form Feed.

Examples

newline gives Line Feed (LF), shown as ^J:

Decimal      10
Hexadecimal  0A
Octal        012
Binary       00001010
HTML         &#10;
UTF-8 bytes  0A

€ is beyond ASCII, so it comes back as code point 8364:

Decimal      8364
Hexadecimal  20AC
Octal        20254
Binary       0010000010101100
HTML         &#8364;
UTF-8 bytes  E2 82 AC

128 is not the euro sign but U+0080, a C1 control with the UTF-8 bytes C2 80. Its HTML row reads None: HTML reads  as a different character. Browsers turn  into € because byte 0x80 is € in Windows-1252.

7 is the digit seven, code 55. For code 7, the bell, type 07, 0x07 or bell.

❤️ is rejected with “❤️” is one character made of 2 code points, 0x2764 and 0xFE0F: look them up one at a time. The second code point is the selector that asks for the emoji style.

Good to know

ASCII has 128 codes, 0 to 127. It’s a 7-bit code, standardized as ANSI X3.4 and US-ASCII. Codes 32 to 126 print; 0 to 31 and 127 are control characters.
Caret notation is how terminals show control characters. ^ plus the character 64 codes higher: code 3 is ^C, code 27 (Escape) is ^[, and DEL is ^?. Ctrl with that key sends the code, so Ctrl+C sends 3.
Line endings are control characters. Unix ends lines with LF (\n, 10); Windows uses CR then LF (\r\n, 13 10).
There is no single extended ASCII. Codes 128 to 255 differ by code page: Latin-1, Windows-1252, DOS code page 437. Here, any code above 127 is a Unicode code point; 128 to 255 match Latin-1.
ASCII text is already UTF-8. Codes 0 to 127 are one byte each in UTF-8, unchanged. Every other code point takes two to four bytes, each from 0x80 up.
A lookup is up to 40 characters, and code points run from 0 to 0x10FFFF, without the surrogates 0xD800 to 0xDFFF.

Questions

What is the ASCII code for A?

Capital A is 65, or 0x41 in hex; small a is 97, or 0x61. Every capital letter is 32 below its small letter, so the two cases differ by one bit.

How do I convert a character to its ASCII code in code?

In JavaScript, 'A'.codePointAt(0) gives 65, and .toString(16) makes it 41. In Python, ord('A') gives 65 and hex(ord('A')) gives '0x41'; in a shell, printf '%x\n' "'A" prints 41.

What is the difference between ASCII and Unicode?

ASCII is 128 characters; Unicode has room for 1,114,112 code points, and its first 128 are ASCII. UTF-8, the usual way to store Unicode, keeps ASCII text byte for byte.