ASCII Table

The full ASCII character set with decimal, hex, octal and binary values.

Dec	Hex	Oct	Binary	Char	Description
0	00	000	00000000	NUL	Null
1	01	001	00000001	SOH	Start of Heading
2	02	002	00000010	STX	Start of Text
3	03	003	00000011	ETX	End of Text
4	04	004	00000100	EOT	End of Transmission
5	05	005	00000101	ENQ	Enquiry
6	06	006	00000110	ACK	Acknowledge
7	07	007	00000111	BEL	Bell
8	08	010	00001000	BS	Backspace
9	09	011	00001001	HT	Horizontal Tab
10	0A	012	00001010	LF	Line Feed
11	0B	013	00001011	VT	Vertical Tab
12	0C	014	00001100	FF	Form Feed
13	0D	015	00001101	CR	Carriage Return
14	0E	016	00001110	SO	Shift Out
15	0F	017	00001111	SI	Shift In
16	10	020	00010000	DLE	Data Link Escape
17	11	021	00010001	DC1	Device Control 1
18	12	022	00010010	DC2	Device Control 2
19	13	023	00010011	DC3	Device Control 3
20	14	024	00010100	DC4	Device Control 4
21	15	025	00010101	NAK	Negative Acknowledge
22	16	026	00010110	SYN	Synchronous Idle
23	17	027	00010111	ETB	End of Transmission Block
24	18	030	00011000	CAN	Cancel
25	19	031	00011001	EM	End of Medium
26	1A	032	00011010	SUB	Substitute
27	1B	033	00011011	ESC	Escape
28	1C	034	00011100	FS	File Separator
29	1D	035	00011101	GS	Group Separator
30	1E	036	00011110	RS	Record Separator
31	1F	037	00011111	US	Unit Separator
32	20	040	00100000	SP	Space
33	21	041	00100001	!	Printable character
34	22	042	00100010	"	Printable character
35	23	043	00100011	#	Printable character
36	24	044	00100100	$	Printable character
37	25	045	00100101	%	Printable character
38	26	046	00100110	&	Printable character
39	27	047	00100111	'	Printable character
40	28	050	00101000	(	Printable character
41	29	051	00101001	)	Printable character
42	2A	052	00101010	*	Printable character
43	2B	053	00101011	+	Printable character
44	2C	054	00101100	,	Printable character
45	2D	055	00101101	-	Printable character
46	2E	056	00101110	.	Printable character
47	2F	057	00101111	/	Printable character
48	30	060	00110000	0	Printable character
49	31	061	00110001	1	Printable character
50	32	062	00110010	2	Printable character
51	33	063	00110011	3	Printable character
52	34	064	00110100	4	Printable character
53	35	065	00110101	5	Printable character
54	36	066	00110110	6	Printable character
55	37	067	00110111	7	Printable character
56	38	070	00111000	8	Printable character
57	39	071	00111001	9	Printable character
58	3A	072	00111010	:	Printable character
59	3B	073	00111011	;	Printable character
60	3C	074	00111100	<	Printable character
61	3D	075	00111101	=	Printable character
62	3E	076	00111110	>	Printable character
63	3F	077	00111111	?	Printable character
64	40	100	01000000	@	Printable character
65	41	101	01000001	A	Printable character
66	42	102	01000010	B	Printable character
67	43	103	01000011	C	Printable character
68	44	104	01000100	D	Printable character
69	45	105	01000101	E	Printable character
70	46	106	01000110	F	Printable character
71	47	107	01000111	G	Printable character
72	48	110	01001000	H	Printable character
73	49	111	01001001	I	Printable character
74	4A	112	01001010	J	Printable character
75	4B	113	01001011	K	Printable character
76	4C	114	01001100	L	Printable character
77	4D	115	01001101	M	Printable character
78	4E	116	01001110	N	Printable character
79	4F	117	01001111	O	Printable character
80	50	120	01010000	P	Printable character
81	51	121	01010001	Q	Printable character
82	52	122	01010010	R	Printable character
83	53	123	01010011	S	Printable character
84	54	124	01010100	T	Printable character
85	55	125	01010101	U	Printable character
86	56	126	01010110	V	Printable character
87	57	127	01010111	W	Printable character
88	58	130	01011000	X	Printable character
89	59	131	01011001	Y	Printable character
90	5A	132	01011010	Z	Printable character
91	5B	133	01011011	[	Printable character
92	5C	134	01011100	\	Printable character
93	5D	135	01011101	]	Printable character
94	5E	136	01011110	^	Printable character
95	5F	137	01011111	_	Printable character
96	60	140	01100000	`	Printable character
97	61	141	01100001	a	Printable character
98	62	142	01100010	b	Printable character
99	63	143	01100011	c	Printable character
100	64	144	01100100	d	Printable character
101	65	145	01100101	e	Printable character
102	66	146	01100110	f	Printable character
103	67	147	01100111	g	Printable character
104	68	150	01101000	h	Printable character
105	69	151	01101001	i	Printable character
106	6A	152	01101010	j	Printable character
107	6B	153	01101011	k	Printable character
108	6C	154	01101100	l	Printable character
109	6D	155	01101101	m	Printable character
110	6E	156	01101110	n	Printable character
111	6F	157	01101111	o	Printable character
112	70	160	01110000	p	Printable character
113	71	161	01110001	q	Printable character
114	72	162	01110010	r	Printable character
115	73	163	01110011	s	Printable character
116	74	164	01110100	t	Printable character
117	75	165	01110101	u	Printable character
118	76	166	01110110	v	Printable character
119	77	167	01110111	w	Printable character
120	78	170	01111000	x	Printable character
121	79	171	01111001	y	Printable character
122	7A	172	01111010	z	Printable character
123	7B	173	01111011	{	Printable character
124	7C	174	01111100	\|	Printable character
125	7D	175	01111101	}	Printable character
126	7E	176	01111110	~	Printable character
127	7F	177	01111111	DEL	Delete

About the ASCII table

ASCII (American Standard Code for Information Interchange) assigns a number from 0 to 127 to letters, digits, punctuation and a set of control codes. This table lists every one of those 128 values with its decimal, hexadecimal, octal and binary form, the character it represents, and a short description. Use the filter box to jump to a value — type a number like 65, a hex code like 41, a character like A, or part of a name like escape.

Printable characters and control codes

Codes 32 to 126 are the printable characters: space, digits, uppercase and lowercase letters, and common punctuation — the everyday text you can type and see. Codes 0 to 31, plus 127, are control codes that don't print but instruct devices: LF (10) starts a new line, CR (13) returns the cursor, TAB (9) inserts a tab, and ESC (27) begins escape sequences. They date from the teleprinter era but still underpin how text and terminals work today.

Why it's still useful

ASCII is the foundation of modern text encodings — the first 128 values of UTF-8 are identical to ASCII — so this table is a handy reference when working with character codes, debugging data, writing low-level code, or converting between number bases. Knowing that A is 65 and a is 97, for example, makes many string operations click into place.

Frequently asked questions

What's the difference between ASCII and Unicode?

ASCII covers 128 characters; Unicode covers over a million. UTF-8 keeps the first 128 identical to ASCII, so ASCII is a subset of modern Unicode text.

Why are some rows not real characters?

Codes 0–31 and 127 are control codes (like Tab, Line Feed and Escape). They perform actions rather than displaying a glyph.

Is anything sent to a server?

No. The table is built into the page and the filter runs in your browser — nothing is transmitted.