Developer

ASCII Table

Quick reference for ASCII codes 0–127 with decimal, hex, octal, binary, and character names.

Dec	Hex	Oct	Bin	Char	Name
0	0x00	000	00000000	·	NUL
1	0x01	001	00000001	·	SOH
2	0x02	002	00000010	·	STX
3	0x03	003	00000011	·	ETX
4	0x04	004	00000100	·	EOT
5	0x05	005	00000101	·	ENQ
6	0x06	006	00000110	·	ACK
7	0x07	007	00000111	·	BEL
8	0x08	010	00001000	·	BS
9	0x09	011	00001001	·	HT
10	0x0A	012	00001010	·	LF
11	0x0B	013	00001011	·	VT
12	0x0C	014	00001100	·	FF
13	0x0D	015	00001101	·	CR
14	0x0E	016	00001110	·	SO
15	0x0F	017	00001111	·	SI
16	0x10	020	00010000	·	DLE
17	0x11	021	00010001	·	DC1
18	0x12	022	00010010	·	DC2
19	0x13	023	00010011	·	DC3
20	0x14	024	00010100	·	DC4
21	0x15	025	00010101	·	NAK
22	0x16	026	00010110	·	SYN
23	0x17	027	00010111	·	ETB
24	0x18	030	00011000	·	CAN
25	0x19	031	00011001	·	EM
26	0x1A	032	00011010	·	SUB
27	0x1B	033	00011011	·	ESC
28	0x1C	034	00011100	·	FS
29	0x1D	035	00011101	·	GS
30	0x1E	036	00011110	·	RS
31	0x1F	037	00011111	·	US
32	0x20	040	00100000	SP
33	0x21	041	00100001	!	!
34	0x22	042	00100010	"	"
35	0x23	043	00100011	#	#
36	0x24	044	00100100	$	$
37	0x25	045	00100101	%	%
38	0x26	046	00100110	&	&
39	0x27	047	00100111	'	'
40	0x28	050	00101000	(	(
41	0x29	051	00101001	)	)
42	0x2A	052	00101010	*	*
43	0x2B	053	00101011	+	+
44	0x2C	054	00101100	,	,
45	0x2D	055	00101101	-	-
46	0x2E	056	00101110	.	.
47	0x2F	057	00101111	/	/
48	0x30	060	00110000	0	0
49	0x31	061	00110001	1	1
50	0x32	062	00110010	2	2
51	0x33	063	00110011	3	3
52	0x34	064	00110100	4	4
53	0x35	065	00110101	5	5
54	0x36	066	00110110	6	6
55	0x37	067	00110111	7	7
56	0x38	070	00111000	8	8
57	0x39	071	00111001	9	9
58	0x3A	072	00111010	:	:
59	0x3B	073	00111011	;	;
60	0x3C	074	00111100	<	<
61	0x3D	075	00111101	=	=
62	0x3E	076	00111110	>	>
63	0x3F	077	00111111	?	?
64	0x40	100	01000000	@	@
65	0x41	101	01000001	A	A
66	0x42	102	01000010	B	B
67	0x43	103	01000011	C	C
68	0x44	104	01000100	D	D
69	0x45	105	01000101	E	E
70	0x46	106	01000110	F	F
71	0x47	107	01000111	G	G
72	0x48	110	01001000	H	H
73	0x49	111	01001001	I	I
74	0x4A	112	01001010	J	J
75	0x4B	113	01001011	K	K
76	0x4C	114	01001100	L	L
77	0x4D	115	01001101	M	M
78	0x4E	116	01001110	N	N
79	0x4F	117	01001111	O	O
80	0x50	120	01010000	P	P
81	0x51	121	01010001	Q	Q
82	0x52	122	01010010	R	R
83	0x53	123	01010011	S	S
84	0x54	124	01010100	T	T
85	0x55	125	01010101	U	U
86	0x56	126	01010110	V	V
87	0x57	127	01010111	W	W
88	0x58	130	01011000	X	X
89	0x59	131	01011001	Y	Y
90	0x5A	132	01011010	Z	Z
91	0x5B	133	01011011	[	[
92	0x5C	134	01011100	\	\
93	0x5D	135	01011101	]	]
94	0x5E	136	01011110	^	^
95	0x5F	137	01011111	_	_
96	0x60	140	01100000	`	`
97	0x61	141	01100001	a	a
98	0x62	142	01100010	b	b
99	0x63	143	01100011	c	c
100	0x64	144	01100100	d	d
101	0x65	145	01100101	e	e
102	0x66	146	01100110	f	f
103	0x67	147	01100111	g	g
104	0x68	150	01101000	h	h
105	0x69	151	01101001	i	i
106	0x6A	152	01101010	j	j
107	0x6B	153	01101011	k	k
108	0x6C	154	01101100	l	l
109	0x6D	155	01101101	m	m
110	0x6E	156	01101110	n	n
111	0x6F	157	01101111	o	o
112	0x70	160	01110000	p	p
113	0x71	161	01110001	q	q
114	0x72	162	01110010	r	r
115	0x73	163	01110011	s	s
116	0x74	164	01110100	t	t
117	0x75	165	01110101	u	u
118	0x76	166	01110110	v	v
119	0x77	167	01110111	w	w
120	0x78	170	01111000	x	x
121	0x79	171	01111001	y	y
122	0x7A	172	01111010	z	z
123	0x7B	173	01111011	{	{
124	0x7C	174	01111100	\|	\|
125	0x7D	175	01111101	}	}
126	0x7E	176	01111110	~	~
127	0x7F	177	01111111	·	DEL

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Frequently Asked Questions

Quick answers to common questions

What is ASCII?+

ASCII (American Standard Code for Information Interchange) assigns numbers 0–127 to letters, digits, punctuation, and control characters.

Why only 0–127?+

Standard ASCII is 7-bit. Extended ASCII (128–255) varies by encoding; this table covers the portable core set.

What are control characters?+

Codes 0–31 and 127 are non-printable controls like NUL, TAB, LF (newline), and DEL.

Printable range?+

Codes 32 (space) through 126 (~) are printable characters.

Hex and binary columns?+

Hex shows base-16 value; binary shows the 8-bit representation used in low-level programming.

Is this interactive?+

This is a static reference table for quick lookup while coding or debugging.

Extended ASCII?+

For Unicode and extended characters, use a Unicode code point reference.

Free?+

Yes.