ASCII Table

All 128 ASCII characters with their decimal, hex, octal and binary codes, control character names and escapes, and HTML entities, searchable.

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Reference

ASCII table

Dec	Hex	Oct	Binary	Character
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 (Ctrl+C)
4	04	004	00000100	EOT end of transmission (Ctrl+D)
5	05	005	00000101	ENQ enquiry
6	06	006	00000110	ACK acknowledge
7	07	007	00000111	BEL bell, \a
8	08	010	00001000	BS backspace, \b
9	09	011	00001001	HT tab, \t
10	0A	012	00001010	LF line feed, \n
11	0B	013	00001011	VT vertical tab, \v
12	0C	014	00001100	FF form feed, \f
13	0D	015	00001101	CR carriage return, \r
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 XON (Ctrl+Q)
18	12	022	00010010	DC2
19	13	023	00010011	DC3 XOFF (Ctrl+S)
20	14	024	00010100	DC4
21	15	025	00010101	NAK negative acknowledge
22	16	026	00010110	SYN synchronous idle
23	17	027	00010111	ETB end of block
24	18	030	00011000	CAN cancel
25	19	031	00011001	EM end of medium
26	1A	032	00011010	SUB substitute (Ctrl+Z)
27	1B	033	00011011	ESC escape, \e
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	space
33	21	041	00100001	!
34	22	042	00100010	" "
35	23	043	00100011	#
36	24	044	00100100	$
37	25	045	00100101	%
38	26	046	00100110	& &
39	27	047	00100111	' '
40	28	050	00101000	(
41	29	051	00101001	)
42	2A	052	00101010	*
43	2B	053	00101011	+
44	2C	054	00101100	,
45	2D	055	00101101	-
46	2E	056	00101110	.
47	2F	057	00101111	/
48	30	060	00110000	0
49	31	061	00110001	1
50	32	062	00110010	2
51	33	063	00110011	3
52	34	064	00110100	4
53	35	065	00110101	5
54	36	066	00110110	6
55	37	067	00110111	7
56	38	070	00111000	8
57	39	071	00111001	9
58	3A	072	00111010	:
59	3B	073	00111011	;
60	3C	074	00111100	< <
61	3D	075	00111101	=
62	3E	076	00111110	> >
63	3F	077	00111111	?
64	40	100	01000000	@
65	41	101	01000001	A
66	42	102	01000010	B
67	43	103	01000011	C
68	44	104	01000100	D
69	45	105	01000101	E
70	46	106	01000110	F
71	47	107	01000111	G
72	48	110	01001000	H
73	49	111	01001001	I
74	4A	112	01001010	J
75	4B	113	01001011	K
76	4C	114	01001100	L
77	4D	115	01001101	M
78	4E	116	01001110	N
79	4F	117	01001111	O
80	50	120	01010000	P
81	51	121	01010001	Q
82	52	122	01010010	R
83	53	123	01010011	S
84	54	124	01010100	T
85	55	125	01010101	U
86	56	126	01010110	V
87	57	127	01010111	W
88	58	130	01011000	X
89	59	131	01011001	Y
90	5A	132	01011010	Z
91	5B	133	01011011	[
92	5C	134	01011100	\
93	5D	135	01011101	]
94	5E	136	01011110	^
95	5F	137	01011111	_
96	60	140	01100000	`
97	61	141	01100001	a
98	62	142	01100010	b
99	63	143	01100011	c
100	64	144	01100100	d
101	65	145	01100101	e
102	66	146	01100110	f
103	67	147	01100111	g
104	68	150	01101000	h
105	69	151	01101001	i
106	6A	152	01101010	j
107	6B	153	01101011	k
108	6C	154	01101100	l
109	6D	155	01101101	m
110	6E	156	01101110	n
111	6F	157	01101111	o
112	70	160	01110000	p
113	71	161	01110001	q
114	72	162	01110010	r
115	73	163	01110011	s
116	74	164	01110100	t
117	75	165	01110101	u
118	76	166	01110110	v
119	77	167	01110111	w
120	78	170	01111000	x
121	79	171	01111001	y
122	7A	172	01111010	z
123	7B	173	01111011	{
124	7C	174	01111100	\|
125	7D	175	01111101	}
126	7E	176	01111110	~
127	7F	177	01111111	DEL delete

ASCII covers 0-127, and UTF-8 encodes those 128 characters as the same single bytes, which is why ASCII text is already valid UTF-8. 0-31 and 127 are control characters; the Ctrl shortcuts in a terminal send them (Ctrl+C is 3).

About this tool

Method, assumptions, practical next steps, and limits.

ASCII inside UTF-8

UTF-8 encodes the 128 ASCII characters as the same single bytes, which is why plain ASCII text is already valid UTF-8 and why UTF-8 took over the web without breaking older files. Anything above 127 is not ASCII, whatever an editor calls it.

Control characters you still meet

LF (10) ends lines on Unix and CR LF (13 10) on Windows and in HTTP headers. ESC (27) starts the colour codes in terminal output. NUL (0) ends C strings, which is why a stray null byte in input can truncate a value. Ctrl+C sends ETX (3) and Ctrl+D EOT (4), which a shell reads as end of input.

Frequently asked questions

What is the ASCII code for a space?

32 in decimal, 0x20 in hex.

What is the difference between \n and \r\n?

\n is line feed (10), the Unix line ending. \r\n adds a carriage return (13) first, the Windows and HTTP line ending.

Is what I paste sent anywhere?

No. The tool runs entirely in your browser with JavaScript. Nothing you type or paste is sent to our server or stored.

ASCII Table

ASCII table

ASCII inside UTF-8

Control characters you still meet

Frequently asked questions

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