ASCII Table

All 128 ASCII codes with decimal, hexadecimal, octal and binary alongside the character. Codes 0–31 and 127 are control characters and carry their standard abbreviation instead of a glyph.

128 rows

Dec	Hex	Oct	Binary	Char
0	00	000	0000000	NUL
1	01	001	0000001	SOH
2	02	002	0000010	STX
3	03	003	0000011	ETX
4	04	004	0000100	EOT
5	05	005	0000101	ENQ
6	06	006	0000110	ACK
7	07	007	0000111	BEL
8	08	010	0001000	BS
9	09	011	0001001	HT
10	0A	012	0001010	LF
11	0B	013	0001011	VT
12	0C	014	0001100	FF
13	0D	015	0001101	CR
14	0E	016	0001110	SO
15	0F	017	0001111	SI
16	10	020	0010000	DLE
17	11	021	0010001	DC1
18	12	022	0010010	DC2
19	13	023	0010011	DC3
20	14	024	0010100	DC4
21	15	025	0010101	NAK
22	16	026	0010110	SYN
23	17	027	0010111	ETB
24	18	030	0011000	CAN
25	19	031	0011001	EM
26	1A	032	0011010	SUB
27	1B	033	0011011	ESC
28	1C	034	0011100	FS
29	1D	035	0011101	GS
30	1E	036	0011110	RS
31	1F	037	0011111	US
32	20	040	0100000	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	?
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	_
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

Computed, not transcribed

Hex, octal and binary are derived from the code point when the page is built, and the character comes from the code point too. A typo in one cell is structurally impossible.

Questions

What is the difference between ASCII and UTF-8?

ASCII defines 128 code points and needs seven bits. UTF-8 is a way of encoding all of Unicode, and it was designed so that its first 128 code points are byte-for-byte identical to ASCII — every ASCII file is already valid UTF-8.

Why does the table stop at 127?

ASCII is a seven-bit code, and seven bits hold exactly 128 values. Everything above 127 belongs to some later extension — Latin-1, Windows-1252, Unicode — and those disagree with each other.

What are the control characters for?

They were commands for teleprinters and terminals rather than printable symbols. A handful survive in daily use: 9 is tab, 10 is line feed, 13 is carriage return, and 27 starts the escape sequences that colour terminal output.

Sources and last check

rfc-editor.orgChecked 2026-08-26

Information, not professional advice.

ASCII Table

Computed, not transcribed

Questions

Sources and last check

Other tables