Reference chart

ASCII Table (0–127)

All 128 ASCII codes with their decimal, hexadecimal, octal and 7-bit binary values, and the names of the control characters, as listed in RFC 20. The table is generated by the same code as the ASCII converter.

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CodeShift · codeshift.pages.dev/ascii-table/

Control characters (0–31)

Dec	Hex	Oct	Binary	Char
0	00	000	0000000	NUL Null
1	01	001	0000001	SOH Start of Heading
2	02	002	0000010	STX Start of Text
3	03	003	0000011	ETX End of Text
4	04	004	0000100	EOT End of Transmission
5	05	005	0000101	ENQ Enquiry
6	06	006	0000110	ACK Acknowledge
7	07	007	0000111	BEL Bell
8	08	010	0001000	BS Backspace
9	09	011	0001001	HT Horizontal Tab
10	0A	012	0001010	LF Line Feed
11	0B	013	0001011	VT Vertical Tab
12	0C	014	0001100	FF Form Feed
13	0D	015	0001101	CR Carriage Return
14	0E	016	0001110	SO Shift Out
15	0F	017	0001111	SI Shift In
16	10	020	0010000	DLE Data Link Escape
17	11	021	0010001	DC1 Device Control 1
18	12	022	0010010	DC2 Device Control 2
19	13	023	0010011	DC3 Device Control 3
20	14	024	0010100	DC4 Device Control 4
21	15	025	0010101	NAK Negative Acknowledge
22	16	026	0010110	SYN Synchronous Idle
23	17	027	0010111	ETB End of Transmission Block
24	18	030	0011000	CAN Cancel
25	19	031	0011001	EM End of Medium
26	1A	032	0011010	SUB Substitute
27	1B	033	0011011	ESC Escape
28	1C	034	0011100	FS File Separator
29	1D	035	0011101	GS Group Separator
30	1E	036	0011110	RS Record Separator
31	1F	037	0011111	US Unit Separator

Space, punctuation and digits (32–63)

Dec	Hex	Oct	Binary	Char
32	20	040	0100000	SP Space
33	21	041	0100001	!
34	22	042	0100010	"
35	23	043	0100011	#
36	24	044	0100100	$
37	25	045	0100101	%
38	26	046	0100110	&
39	27	047	0100111	'
40	28	050	0101000	(
41	29	051	0101001	)
42	2A	052	0101010	*
43	2B	053	0101011	+
44	2C	054	0101100	,
45	2D	055	0101101	-
46	2E	056	0101110	.
47	2F	057	0101111	/
48	30	060	0110000	0
49	31	061	0110001	1
50	32	062	0110010	2
51	33	063	0110011	3
52	34	064	0110100	4
53	35	065	0110101	5
54	36	066	0110110	6
55	37	067	0110111	7
56	38	070	0111000	8
57	39	071	0111001	9
58	3A	072	0111010	:
59	3B	073	0111011	;
60	3C	074	0111100	<
61	3D	075	0111101	=
62	3E	076	0111110	>
63	3F	077	0111111	?

Uppercase letters and symbols (64–95)

Dec	Hex	Oct	Binary	Char
64	40	100	1000000	@
65	41	101	1000001	A
66	42	102	1000010	B
67	43	103	1000011	C
68	44	104	1000100	D
69	45	105	1000101	E
70	46	106	1000110	F
71	47	107	1000111	G
72	48	110	1001000	H
73	49	111	1001001	I
74	4A	112	1001010	J
75	4B	113	1001011	K
76	4C	114	1001100	L
77	4D	115	1001101	M
78	4E	116	1001110	N
79	4F	117	1001111	O
80	50	120	1010000	P
81	51	121	1010001	Q
82	52	122	1010010	R
83	53	123	1010011	S
84	54	124	1010100	T
85	55	125	1010101	U
86	56	126	1010110	V
87	57	127	1010111	W
88	58	130	1011000	X
89	59	131	1011001	Y
90	5A	132	1011010	Z
91	5B	133	1011011	[
92	5C	134	1011100	\
93	5D	135	1011101	]
94	5E	136	1011110	^
95	5F	137	1011111	_

Lowercase letters, symbols and DEL (96–127)

Dec	Hex	Oct	Binary	Char
96	60	140	1100000	`
97	61	141	1100001	a
98	62	142	1100010	b
99	63	143	1100011	c
100	64	144	1100100	d
101	65	145	1100101	e
102	66	146	1100110	f
103	67	147	1100111	g
104	68	150	1101000	h
105	69	151	1101001	i
106	6A	152	1101010	j
107	6B	153	1101011	k
108	6C	154	1101100	l
109	6D	155	1101101	m
110	6E	156	1101110	n
111	6F	157	1101111	o
112	70	160	1110000	p
113	71	161	1110001	q
114	72	162	1110010	r
115	73	163	1110011	s
116	74	164	1110100	t
117	75	165	1110101	u
118	76	166	1110110	v
119	77	167	1110111	w
120	78	170	1111000	x
121	79	171	1111001	y
122	7A	172	1111010	z
123	7B	173	1111011	{
124	7C	174	1111100	\|
125	7D	175	1111101	}
126	7E	176	1111110	~
127	7F	177	1111111	DEL Delete

Reading the ASCII table

ASCII assigns the numbers 0 to 127 to 33 control characters, the space and 94 printable characters. The same number is shown four ways: decimal (base 10), hexadecimal (base 16, two digits), octal (base 8, three digits) and binary (7 bits — add a leading 0 to make the 8-bit byte computers store). Hover or tap a control abbreviation to see its full name.

Useful landmarks

Digits 0–9 are codes 48–57 (hex 30–39).
Capitals A–Z are 65–90 (hex 41–5A); lowercase a–z are 97–122 (hex 61–7A).
Space is 32 (hex 20); DEL is 127 (hex 7F).
Tab is 9, line feed 10, carriage return 13 and escape 27.

UTF-8 keeps these 128 codes unchanged as single bytes, which is why plain English text looks identical in ASCII and UTF-8. Codes above 127 are not ASCII; so-called “extended ASCII” tables differ between code pages. Convert text to codes with the ASCII converter, or to bytes with the binary and hex converters.

Sources

Frequently asked questions

How many characters does ASCII have?+

128 (codes 0–127): 33 control characters, the space, and 94 printable characters.

What is ASCII 65?+

65 is capital A (hex 41, binary 1000001). 97 is lowercase a.

What do LF and CR mean?+

LF (10, line feed) moves to a new line and CR (13, carriage return) returns to the start of the line. Unix-style text ends lines with LF; Windows uses CR followed by LF.

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ASCII Converter

Text ↔ decimal character codes, with the full 0–127 table.

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