ASCII Table

The complete ASCII table (0–127). Search decimal, hex, binary, octal, character, or description; click a cell to copy it; or enter a character to jump to its row.

Look up a character

DecHexBinOctCharNameDescription

—Space (whitespace)

—Symbol !

—Symbol "

—Symbol #

—Symbol $

—Symbol %

—Symbol &

—Symbol '

—Symbol (

—Symbol )

—Symbol *

—Symbol +

—Symbol ,

—Symbol -

—Symbol .

—Symbol /

—Digit 0

—Digit 1

—Digit 2

—Digit 3

—Digit 4

—Digit 5

—Digit 6

—Digit 7

—Digit 8

—Digit 9

—Symbol :

—Symbol ;

—Symbol <

—Symbol =

—Symbol >

—Symbol ?

—Symbol @

—Uppercase letter A

—Uppercase letter B

—Uppercase letter C

—Uppercase letter D

—Uppercase letter E

—Uppercase letter F

—Uppercase letter G

—Uppercase letter H

—Uppercase letter I

—Uppercase letter J

—Uppercase letter K

—Uppercase letter L

—Uppercase letter M

—Uppercase letter N

—Uppercase letter O

—Uppercase letter P

—Uppercase letter Q

—Uppercase letter R

—Uppercase letter S

—Uppercase letter T

—Uppercase letter U

—Uppercase letter V

—Uppercase letter W

—Uppercase letter X

—Uppercase letter Y

—Uppercase letter Z

—Symbol [

—Symbol \

—Symbol ]

—Symbol ^

—Symbol _

—Symbol `

—Lowercase letter a

—Lowercase letter b

—Lowercase letter c

—Lowercase letter d

—Lowercase letter e

—Lowercase letter f

—Lowercase letter g

—Lowercase letter h

—Lowercase letter i

—Lowercase letter j

—Lowercase letter k

—Lowercase letter l

—Lowercase letter m

—Lowercase letter n

—Lowercase letter o

—Lowercase letter p

—Lowercase letter q

—Lowercase letter r

—Lowercase letter s

—Lowercase letter t

—Lowercase letter u

—Lowercase letter v

—Lowercase letter w

—Lowercase letter x

—Lowercase letter y

—Lowercase letter z

—Symbol {

—Symbol |

—Symbol }

—Symbol ~

Frequently Asked Questions

What is an ASCII table?

An ASCII table lists the 128 standard ASCII characters and their decimal, hexadecimal, binary, and octal codes.

What is the ASCII value of A?

Uppercase A is decimal 65, hexadecimal 41, binary 01000001, and octal 101.

What is the ASCII code for a space?

A space is decimal 32, hexadecimal 20, binary 00100000, and octal 040.

Why does ASCII end at 127?

Standard ASCII is a 7-bit character set, so it has values from 0 through 127.

What are ASCII control characters?

Codes 0–31 and 127 are non-printing control characters such as tab, line feed, carriage return, escape, and delete.

What is the difference between ASCII and Unicode?

ASCII covers 128 English-oriented characters. Unicode covers writing systems and symbols worldwide while preserving ASCII at the same first 128 values.

Is ASCII compatible with UTF-8?

Yes. Every ASCII byte has the same value in UTF-8, so valid ASCII text is valid UTF-8 text.

How do I find an ASCII character by code?

Search for its decimal, hexadecimal, binary, or octal value in the interactive table.

Can I copy values from this table?

Yes. Select any decimal, hexadecimal, binary, octal, or character cell to copy its value.

Do Chinese characters and emoji have ASCII values?

No. They are Unicode characters outside ASCII's 0–127 range.

ASCII is the original 7-bit character repertoire used by computers and telecommunications. This reference gives every standard value from 0 through 127 in decimal, hexadecimal, binary, and octal.

Complete ASCII Table (0–127)

Control Characters (0–31 and 127)

Decimal	Hex	Binary	Octal	Mnemonic	Description
0	00	00000000	000	NUL	Null
1	01	00000001	001	SOH	Start of Heading
2	02	00000010	002	STX	Start of Text
3	03	00000011	003	ETX	End of Text
4	04	00000100	004	EOT	End of Transmission
5	05	00000101	005	ENQ	Enquiry
6	06	00000110	006	ACK	Acknowledgement
7	07	00000111	007	BEL	Bell
8	08	00001000	010	BS	Backspace
9	09	00001001	011	HT	Horizontal Tab
10	0A	00001010	012	LF	Line Feed
11	0B	00001011	013	VT	Vertical Tab
12	0C	00001100	014	FF	Form Feed
13	0D	00001101	015	CR	Carriage Return
14	0E	00001110	016	SO	Shift Out
15	0F	00001111	017	SI	Shift In
16	10	00010000	020	DLE	Data Link Escape
17	11	00010001	021	DC1	Device Control 1
18	12	00010010	022	DC2	Device Control 2
19	13	00010011	023	DC3	Device Control 3
20	14	00010100	024	DC4	Device Control 4
21	15	00010101	025	NAK	Negative Acknowledgement
22	16	00010110	026	SYN	Synchronous Idle
23	17	00010111	027	ETB	End of Transmission Block
24	18	00011000	030	CAN	Cancel
25	19	00011001	031	EM	End of Medium
26	1A	00011010	032	SUB	Substitute
27	1B	00011011	033	ESC	Escape
28	1C	00011100	034	FS	File Separator
29	1D	00011101	035	GS	Group Separator
30	1E	00011110	036	RS	Record Separator
31	1F	00011111	037	US	Unit Separator
127	7F	01111111	177	DEL	Delete

Printable Characters (32–126)

Decimal	Hex	Binary	Octal	Character	Description
32	20	00100000	040	Space	Printable character
33	21	00100001	041	!	Printable character
34	22	00100010	042	"	Printable character
35	23	00100011	043	#	Printable character
36	24	00100100	044	$	Printable character
37	25	00100101	045	%	Printable character
38	26	00100110	046	&	Printable character
39	27	00100111	047	'	Printable character
40	28	00101000	050	(	Printable character
41	29	00101001	051	)	Printable character
42	2A	00101010	052	*	Printable character
43	2B	00101011	053	+	Printable character
44	2C	00101100	054	,	Printable character
45	2D	00101101	055	-	Printable character
46	2E	00101110	056	.	Printable character
47	2F	00101111	057	/	Printable character
48	30	00110000	060	0	Printable character
49	31	00110001	061	1	Printable character
50	32	00110010	062	2	Printable character
51	33	00110011	063	3	Printable character
52	34	00110100	064	4	Printable character
53	35	00110101	065	5	Printable character
54	36	00110110	066	6	Printable character
55	37	00110111	067	7	Printable character
56	38	00111000	070	8	Printable character
57	39	00111001	071	9	Printable character
58	3A	00111010	072	:	Printable character
59	3B	00111011	073	;	Printable character
60	3C	00111100	074	<	Printable character
61	3D	00111101	075	=	Printable character
62	3E	00111110	076	>	Printable character
63	3F	00111111	077	?	Printable character
64	40	01000000	100	@	Printable character
65	41	01000001	101	A	Printable character
66	42	01000010	102	B	Printable character
67	43	01000011	103	C	Printable character
68	44	01000100	104	D	Printable character
69	45	01000101	105	E	Printable character
70	46	01000110	106	F	Printable character
71	47	01000111	107	G	Printable character
72	48	01001000	110	H	Printable character
73	49	01001001	111	I	Printable character
74	4A	01001010	112	J	Printable character
75	4B	01001011	113	K	Printable character
76	4C	01001100	114	L	Printable character
77	4D	01001101	115	M	Printable character
78	4E	01001110	116	N	Printable character
79	4F	01001111	117	O	Printable character
80	50	01010000	120	P	Printable character
81	51	01010001	121	Q	Printable character
82	52	01010010	122	R	Printable character
83	53	01010011	123	S	Printable character
84	54	01010100	124	T	Printable character
85	55	01010101	125	U	Printable character
86	56	01010110	126	V	Printable character
87	57	01010111	127	W	Printable character
88	58	01011000	130	X	Printable character
89	59	01011001	131	Y	Printable character
90	5A	01011010	132	Z	Printable character
91	5B	01011011	133	[	Printable character
92	5C	01011100	134	\	Printable character
93	5D	01011101	135	]	Printable character
94	5E	01011110	136	^	Printable character
95	5F	01011111	137	_	Printable character
96	60	01100000	140	`	Printable character
97	61	01100001	141	a	Printable character
98	62	01100010	142	b	Printable character
99	63	01100011	143	c	Printable character
100	64	01100100	144	d	Printable character
101	65	01100101	145	e	Printable character
102	66	01100110	146	f	Printable character
103	67	01100111	147	g	Printable character
104	68	01101000	150	h	Printable character
105	69	01101001	151	i	Printable character
106	6A	01101010	152	j	Printable character
107	6B	01101011	153	k	Printable character
108	6C	01101100	154	l	Printable character
109	6D	01101101	155	m	Printable character
110	6E	01101110	156	n	Printable character
111	6F	01101111	157	o	Printable character
112	70	01110000	160	p	Printable character
113	71	01110001	161	q	Printable character
114	72	01110010	162	r	Printable character
115	73	01110011	163	s	Printable character
116	74	01110100	164	t	Printable character
117	75	01110101	165	u	Printable character
118	76	01110110	166	v	Printable character
119	77	01110111	167	w	Printable character
120	78	01111000	170	x	Printable character
121	79	01111001	171	y	Printable character
122	7A	01111010	172	z	Printable character
123	7B	01111011	173	{	Printable character
124	7C	01111100	174	\|	Printable character
125	7D	01111101	175	}	Printable character
126	7E	01111110	176	~	Printable character

Control Character Deep-Dive

NUL (0, 00)

NUL means null. It is commonly used as the terminator for C strings, so embedded NUL bytes can surprise code that treats text as C-style strings.

SOH (1, 01)

Start of Heading marked the start of a message heading on older communication systems. It is now mainly encountered in legacy protocols.

STX (2, 02)

Start of Text separated message text from a heading in framed transmissions. Modern protocols usually use explicit length fields instead.

ETX (3, 03)

End of Text marked the end of a text block. It remains a useful reference when inspecting older serial protocols.

BEL (7, 07)

Bell asked a terminal to alert the user. Modern terminals may play a sound or flash; log files can still contain this control byte.

BS (8, 08)

Backspace moves a cursor backward. It does not necessarily erase a byte, which is a common distinction in terminal processing.

HT (9, 09)

Horizontal Tab advances to the next tab stop. Its rendered width depends on the editor, terminal, or browser.

LF (10, 0A)

Line Feed moves to the next line. Unix-like systems use LF as their line ending, normally written as `\n` in source code.

VT (11, 0B)

Vertical Tab advances vertically. It is rare today but remains part of the standard C whitespace set.

FF (12, 0C)

Form Feed originally advanced paper to the next page. Printers and some text-processing formats may still interpret it.

CR (13, 0D)

Carriage Return moves to the start of a line. Windows line endings pair CR with LF, written as `\r\n`.

SO (14, 0E)

Shift Out selected an alternate character set on terminals. Its meaning depends on the communication device.

SI (15, 0F)

Shift In returned a terminal to its normal character set. It is the historical counterpart of Shift Out.

ESC (27, 1B)

Escape starts a terminal escape sequence. Treat untrusted ESC bytes carefully because terminals can interpret them as commands.

DEL (127, 7F)

Delete was designed to erase punched-tape positions. It is a control character, not the same thing as the Backspace byte.

How to Use the ASCII Table

How to find the ASCII value of A

Search for A or type A in the character lookup field. Its row shows decimal 65, hexadecimal 41, binary 01000001, and octal 101.

How to convert 65 to an ASCII character

Search for decimal 65. The matching printable character is uppercase A.

How to type a control character (Ctrl-letter)

Many terminals map Ctrl plus a letter to a control byte; for example Ctrl-J commonly produces LF. Mappings vary by terminal and shortcut settings.

How to check ASCII versus non-ASCII in code

Test whether a code point is at most 127. Anything larger, including accented letters, Chinese text, and emoji, needs Unicode handling.

ASCII vs Unicode / UTF-8

ASCII defines only 128 values. Unicode extends that repertoire to nearly every writing system and symbol. UTF-8 deliberately keeps ASCII values unchanged in its first 128 byte values, while non-ASCII characters use multiple bytes.