ASCII Table

The complete ASCII table: all 128 characters with their decimal, hexadecimal, octal and binary codes. Type in the box to filter by character, code or name.

Handy ranges: digits 0–9 are 48–57, uppercase A–Z are 65–90, lowercase a–z are 97–122, and the space is 32. Convert any text to these codes with the text to binary converter.

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Showing 128 of 128 characters

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

How ASCII is organised

0–31 and 127: control codes. These were commands for teleprinters. Tab (9), line feed (10) and carriage return (13) are the ones still in everyday use.
32–126: printable characters. Letters, digits, punctuation and the space.
128 and above: not ASCII. Accented letters, curly quotes and emoji come from other encodings, today almost always Unicode.

ASCII and text messages

SMS does not use ASCII directly. It uses the similar GSM-7 alphabet, which is why most English texts fit 160 characters per message. Characters outside that alphabet, such as emoji, switch the message to Unicode and lower the limit to 70. Check a message with the SMS character counter.

Frequently asked questions

What is ASCII?

ASCII (American Standard Code for Information Interchange) is a 7-bit character set from the 1960s. It gives the numbers 0–127 to English letters, digits, punctuation and 33 control codes such as line feed and tab.

How many characters are in ASCII?

128: 95 printable characters (including the space) and 33 control characters. So-called extended ASCII tables with 256 entries are not one standard; they are separate 8-bit encodings such as Windows-1252.

What is the ASCII code for A?

Uppercase A is 65 (hex 41, binary 01000001). Lowercase a is 97 (hex 61). The two differ by exactly 32, or one bit.

What is the difference between ASCII and Unicode?

ASCII covers 128 characters. Unicode covers well over 140,000, and its first 128 code points are identical to ASCII. That means any ASCII text is also valid UTF-8.

What is the ASCII code for a new line?

Line feed (LF) is 10 and carriage return (CR) is 13. Linux and macOS end lines with LF; Windows uses CR followed by LF.

ASCII Table

How ASCII is organised

ASCII and text messages

Frequently asked questions

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