ASCII Table (Binary, Decimal, Hex)

All 128 ASCII codes with their decimal, hexadecimal and 8-bit binary values. Search by character, number or byte.

Updated November 1, 2026

ASCII codes 0 to 127

Control characters are shown by their short names, like LF for line feed.

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ASCII codes 0 to 127
Decimal	Hex	Binary	Character
0	00	00000000	NUL
1	01	00000001	SOH
2	02	00000010	STX
3	03	00000011	ETX
4	04	00000100	EOT
5	05	00000101	ENQ
6	06	00000110	ACK
7	07	00000111	BEL
8	08	00001000	BS
9	09	00001001	TAB
10	0A	00001010	LF
11	0B	00001011	VT
12	0C	00001100	FF
13	0D	00001101	CR
14	0E	00001110	SO
15	0F	00001111	SI
16	10	00010000	DLE
17	11	00010001	DC1
18	12	00010010	DC2
19	13	00010011	DC3
20	14	00010100	DC4
21	15	00010101	NAK
22	16	00010110	SYN
23	17	00010111	ETB
24	18	00011000	CAN
25	19	00011001	EM
26	1A	00011010	SUB
27	1B	00011011	ESC
28	1C	00011100	FS
29	1D	00011101	GS
30	1E	00011110	RS
31	1F	00011111	US
32	20	00100000	space
33	21	00100001	!
34	22	00100010	"
35	23	00100011	#
36	24	00100100	$
37	25	00100101	%
38	26	00100110	&
39	27	00100111	'
40	28	00101000	(
41	29	00101001	)
42	2A	00101010	*
43	2B	00101011	+
44	2C	00101100	,
45	2D	00101101	-
46	2E	00101110	.
47	2F	00101111	/
48	30	00110000	0
49	31	00110001	1
50	32	00110010	2
51	33	00110011	3
52	34	00110100	4
53	35	00110101	5
54	36	00110110	6
55	37	00110111	7
56	38	00111000	8
57	39	00111001	9
58	3A	00111010	:
59	3B	00111011	;
60	3C	00111100	<
61	3D	00111101	=
62	3E	00111110	>
63	3F	00111111	?
64	40	01000000	@
65	41	01000001	A
66	42	01000010	B
67	43	01000011	C
68	44	01000100	D
69	45	01000101	E
70	46	01000110	F
71	47	01000111	G
72	48	01001000	H
73	49	01001001	I
74	4A	01001010	J
75	4B	01001011	K
76	4C	01001100	L
77	4D	01001101	M
78	4E	01001110	N
79	4F	01001111	O
80	50	01010000	P
81	51	01010001	Q
82	52	01010010	R
83	53	01010011	S
84	54	01010100	T
85	55	01010101	U
86	56	01010110	V
87	57	01010111	W
88	58	01011000	X
89	59	01011001	Y
90	5A	01011010	Z
91	5B	01011011	[
92	5C	01011100	\
93	5D	01011101	]
94	5E	01011110	^
95	5F	01011111	_
96	60	01100000	`
97	61	01100001	a
98	62	01100010	b
99	63	01100011	c
100	64	01100100	d
101	65	01100101	e
102	66	01100110	f
103	67	01100111	g
104	68	01101000	h
105	69	01101001	i
106	6A	01101010	j
107	6B	01101011	k
108	6C	01101100	l
109	6D	01101101	m
110	6E	01101110	n
111	6F	01101111	o
112	70	01110000	p
113	71	01110001	q
114	72	01110010	r
115	73	01110011	s
116	74	01110100	t
117	75	01110101	u
118	76	01110110	v
119	77	01110111	w
120	78	01111000	x
121	79	01111001	y
122	7A	01111010	z
123	7B	01111011	{
124	7C	01111100	\|
125	7D	01111101	}
126	7E	01111110	~
127	7F	01111111	DEL

How the table is organized

ASCII has 128 codes, so it fits in 7 bits. In 8-bit binary the first bit is always 0.

0 to 31 and 127: control characters. They don't print; they told printers and terminals what to do.
32: the space.
33 to 47, 58 to 64, 91 to 96, 123 to 126: punctuation and symbols.
48 to 57: the digits 0 to 9.
65 to 90: capital letters A to Z.
97 to 122: lowercase letters a to z.

Control characters

The first 32 codes and code 127 were made for machines, not for reading. A few are still in daily use: 9 is a tab, 10 is a line feed (a new line on Mac and Linux), and 13 is a carriage return (Windows ends lines with 13 then 10). Code 0, NUL, marks the end of a string in many programming languages, and 27, ESC, starts terminal color codes.

Most of the others, like BEL (7, which rang a bell on teletypes) or DEL (127), are leftovers from punched tape and teleprinters. If a decoded message shows control characters where letters should be, a bit is probably missing or extra.

Convert with ASCII

To turn binary bytes into characters and codes, use the binary to ASCII converter. To go the other way, from characters or codes like 72 105, use the ASCII to binary converter. For letters only, the binary alphabet chart is shorter. To read a whole message, the binary to text converter does the lookups for you, and the binary translator handles both directions.

Frequently asked questions

How many ASCII characters are there?

128, numbered 0 to 127. Of those, 95 are printable (the space, letters, digits and symbols) and 33 are control characters.

What are ASCII control characters?

Codes 0 to 31 and 127. They were commands for printers and terminals rather than visible characters. Tab (9), line feed (10) and carriage return (13) are still common.