ASCII Converter

Q: How do I convert ASCII?

"Converting ASCII" typically consists of switching between a character (e.g., the letter "a", the symbol "%", or the number "2432") and an equivalent value represented by numbers (in the decimal, hexadecimal, or binary representation). This process is known as "character encoding." We can do this in two ways: Manually, using mathematical rules to convert between hex, dec, and binary, then using a table to convert any of them to ASCII characters; or Using an ASCII code translator such as our Omni ASCII converter.

Q: How do I convert from hex to its ASCII string?

To convert hexadecimal to ASCII text: Identify the hexadecimal numbers: hex numbers have two characters, so if, for example, the given hex number is 48656C6C6F, that means there are five hex numbers (48, 65, 6C, 6C, and 6F). Convert each hexadecimal number to a decimal number. Once you know the decimal numbers, find their equivalent character using a decimal-to-ASCII chart or an online converter.

Q: How many ASCII characters are there?

There are 128 characters in the original ASCII and 256 characters in the extended ASCII standard. Keep in mind that the first 32 characters correspond to unprintable control codes used to administer peripherals such as printers.

Q: What is the ASCII value of a?

For the lowercase letter "a", the ASCII values are (in various formats): Binary: 01100001 Octal: 141 Hexadecimal: 61 Decimal: 97 HTML number: &#97;

Creators

Luis Hoyos

Luis is a mechanical engineer who works at Omni Calculator as a content creator and researcher specializing in math and physics calculators with a focus on thermodynamics and classical mechanics. With a strong foundation in mechanical engineering, Luis is passionate about creating tools that simplify complex concepts and improve everyday life. Outside of work, Luis likes weightlifting and applying his engineering knowledge to optimize the thermal conditions of his home, all while caring for four beloved cats. See full profile

Check our editorial policy

Reviewers

Steven Wooding

Steven Wooding is a physicist by training with a degree from the University of Surrey specializing in nuclear physics. He loves data analysis and computer programming. He has worked on exciting projects such as environmentally aware radar, using genetic algorithms to tune radar, and building the UK vaccine queue calculator. Steve is now the Editorial Quality Assurance Coordinator here at Omni Calculator, making sure every calculator meets the standards our users expect. In his spare time, he enjoys cycling, photography, wildlife watching, and long walks. See full profile

Check our editorial policy

Converting ASCII elements is fundamental to understanding how character encoding works, as ASCII is the basis for modern and widely used standards, such as the Unicode encodings, an extension of the ASCII character set (you may want to know what is the difference between Unicode and ASCII and why did UTF-8 replace ASCII). To help you achieve that, this ASCII code translator enables you to perform various conversions, including hex to ASCII text, binary to text, and others.

But this journey doesn't stop here! Apart from this converter, you can explore more specific tools, such as the decimal to hexadecimal converter, binary to hexadecimal converter, or the binary converter. Still confused? You probably need to start by learning what is ASCII 😄.

Below, you'll find the ASCII charts, which provide a comprehensive overview of the ASCII hex, binary, decimal, and text equivalences; you'll find out how many ASCII characters there are!

Charts for ASCII characters

The ASCII characters are composed of 32 unprintable control codes and 96 printable characters. In addition, you'll sometimes find something called "Extended ASCII", which is a standard containing ASCII characters plus a set of 128 additional characters (see the article what is a non-ASCII character for more). You can check all of them in the charts below.

ASCII control characters

DEC	HEX	BIN	Control code	Description
0	00	00000000	NUL	Null character
1	01	00000001	SOH	Start of Heading
2	02	00000010	STX	Start of Text
3	03	00000011	ETX	End of Text
4	04	00000100	EOT	End of Transmission
5	05	00000101	ENQ	Enquiry
6	06	00000110	ACK	Acknowledge
7	07	00000111	BEL	Bell, Alert
8	08	00001000	BS	Backspace
9	09	00001001	HT	Horizontal Tab
10	0A	00001010	LF	Line Feed
11	0B	00001011	VT	Vertical Tabulation
12	0C	00001100	FF	Form Feed
13	0D	00001101	CR	Carriage Return
14	0E	00001110	SO	Shift Out
15	0F	00001111	SI	Shift In
16	10	00010000	DLE	Data Link Escape
17	11	00010001	DC1	Device Control One (XON)
18	12	00010010	DC2	Device Control Two
19	13	00010011	DC3	Device Control Three (XOFF)
20	14	00010100	DC4	Device Control Four
21	15	00010101	NAK	Negative Acknowledge
22	16	00010110	SYN	Synchronous Idle
23	17	00010111	ETB	End of Transmission Block
24	18	00011000	CAN	Cancel
25	19	00011001	EM	End of medium
26	1A	00011010	SUB	Substitute
27	1B	00011011	ESC	Escape
28	1C	00011100	FS	File Separator
29	1D	00011101	GS	Group Separator
30	1E	00011110	RS	Record Separator
31	1F	00011111	US	Unit Separator

ASCII printable characters

DEC	HEX	BIN	Symbol	Description
32	20	00100000	SP	Space
33	21	00100001	!	Exclamation mark
34	22	00100010	"	Double quotes (or speech marks)
35	23	00100011	#	Number sign
36	24	00100100	$	Dollar
37	25	00100101	%	Per cent sign
38	26	00100110	&	Ampersand
39	27	00100111	'	Single quote
40	28	00101000	(	Open parenthesis (or open bracket)
41	29	00101001	)	Close parenthesis (or close bracket)
42	2A	00101010	*	Asterisk
43	2B	00101011	+	Plus
44	2C	00101100	,	Comma
45	2D	00101101	-	Hyphen-minus
46	2E	00101110	.	Period, dot or full stop
47	2F	00101111	/	Slash or divide
48	30	00110000	0	Zero
49	31	00110001	1	One
50	32	00110010	2	Two
51	33	00110011	3	Three
52	34	00110100	4	Four
53	35	00110101	5	Five
54	36	00110110	6	Six
55	37	00110111	7	Seven
56	38	00111000	8	Eight
57	39	00111001	9	Nine
58	3A	00111010	:	Colon
59	3B	00111011	;	Semicolon
60	3C	00111100	<	Less than (or open angled bracket)
61	3D	00111101	=	Equals
62	3E	00111110		Greater than (or close angled bracket)
63	3F	00111111	?	Question mark
64	40	01000000	@	At sign
65	41	01000001	A	Uppercase A
66	42	01000010	B	Uppercase B
67	43	01000011	C	Uppercase C
68	44	01000100	D	Uppercase D
69	45	01000101	E	Uppercase E
70	46	01000110	F	Uppercase F
71	47	01000111	G	Uppercase G
72	48	01001000	H	Uppercase H
73	49	01001001	I	Uppercase I
74	4A	01001010	J	Uppercase J
75	4B	01001011	K	Uppercase K
76	4C	01001100	L	Uppercase L
77	4D	01001101	M	Uppercase M
78	4E	01001110	N	Uppercase N
79	4F	01001111	O	Uppercase O
80	50	01010000	P	Uppercase P
81	51	01010001	Q	Uppercase Q
82	52	01010010	R	Uppercase R
83	53	01010011	S	Uppercase S
84	54	01010100	T	Uppercase T
85	55	01010101	U	Uppercase U
86	56	01010110	V	Uppercase V
87	57	01010111	W	Uppercase W
88	58	01011000	X	Uppercase X
89	59	01011001	Y	Uppercase Y
90	5A	01011010	Z	Uppercase Z
91	5B	01011011	[	Opening bracket
92	5C	01011100	\	Backslash
93	5D	01011101	]	Closing bracket
94	5E	01011110	^	Caret - circumflex
95	5F	01011111	_	Underscore
96	60	01100000	`	Grave accent
97	61	01100001	a	Lowercase a
98	62	01100010	b	Lowercase b
99	63	01100011	c	Lowercase c
100	64	01100100	d	Lowercase d
101	65	01100101	e	Lowercase e
102	66	01100110	f	Lowercase f
103	67	01100111	g	Lowercase g
104	68	01101000	h	Lowercase h
105	69	01101001	i	Lowercase i
106	6A	01101010	j	Lowercase j
107	6B	01101011	k	Lowercase k
108	6C	01101100	l	Lowercase l
109	6D	01101101	m	Lowercase m
110	6E	01101110	n	Lowercase n
111	6F	01101111	o	Lowercase o
112	70	01110000	p	Lowercase p
113	71	01110001	q	Lowercase q
114	72	01110010	r	Lowercase r
115	73	01110011	s	Lowercase s
116	74	01110100	t	Lowercase t
117	75	01110101	u	Lowercase u
118	76	01110110	v	Lowercase v
119	77	01110111	w	Lowercase w
120	78	01111000	x	Lowercase x
121	79	01111001	y	Lowercase y
122	7A	01111010	z	Lowercase z
123	7B	01111011	{	Opening brace
124	7C	01111100		Vertical bar
125	7D	01111101	}	Closing brace
126	7E	01111110	~	Equivalency sign - tilde
127	7F	01111111	DEL	Delete

The extended ASCII codes

The table below corresponds to the Windows-1252 encoding in the 128-255 range:

DEC	HEX	BIN	Symbol	Description
128	80	10000000	€	Euro sign
129	81	10000001		Unused
130	82	10000010	‚	Single low-9 quotation mark
131	83	10000011	ƒ	Latin small letter f with hook
132	84	10000100	„	Double low-9 quotation mark
133	85	10000101	…	Horizontal ellipsis
134	86	10000110	†	Dagger
135	87	10000111	‡	Double dagger
136	88	10001000	ˆ	Modifier letter circumflex accent
137	89	10001001	‰	Per mille sign
138	8A	10001010	Š	Latin capital letter S with caron
139	8B	10001011	‹	Single left-pointing angle quotation
140	8C	10001100	Œ	Latin capital ligature OE
141	8D	10001101		Unused
142	8E	10001110	Ž	Latin capital letter Z with caron
143	8F	10001111		Unused
144	90	10010000		Unused
145	91	10010001	‘	Left single quotation mark
146	92	10010010	’	Right single quotation mark
147	93	10010011	“	Left double quotation mark
148	94	10010100	”	Right double quotation mark
149	95	10010101	•	Bullet
150	96	10010110	–	En dash
151	97	10010111	—	Em dash
152	98	10011000	˜	Small tilde
153	99	10011001	™	Trade mark sign
154	9A	10011010	š	Latin small letter S with caron
155	9B	10011011	›	Single right-pointing angle quotation mark
156	9C	10011100	œ	Latin small ligature oe
157	9D	10011101		Unused
158	9E	10011110	ž	Latin small letter z with caron
159	9F	10011111	Ÿ	Latin capital letter Y with diaeresis
160	A0	10100000	NBSP	Non-breaking space
161	A1	10100001	¡	Inverted exclamation mark
162	A2	10100010	¢	Cent sign
163	A3	10100011	£	Pound sign
164	A4	10100100	¤	Currency sign
165	A5	10100101	¥	Yen sign
166	A6	10100110	¦	Pipe, broken vertical bar
167	A7	10100111	§	Section sign
168	A8	10101000	¨	Spacing diaeresis - umlaut
169	A9	10101001	©	Copyright sign
170	AA	10101010	ª	Feminine ordinal indicator
171	AB	10101011	«	Left double angle quotes
172	AC	10101100	¬	Negation
173	AD	10101101	SHY	Soft hyphen
174	AE	10101110	®	Registered trade mark sign
175	AF	10101111	¯	Spacing macron - overline
176	B0	10110000	°	Degree sign
177	B1	10110001	±	Plus-or-minus sign
178	B2	10110010	²	Superscript two - squared
179	B3	10110011	³	Superscript three - cubed
180	B4	10110100	´	Acute accent - spacing acute
181	B5	10110101	µ	Micro sign
182	B6	10110110	¶	Pilcrow sign - paragraph sign
183	B7	10110111	·	Middle dot - Georgian comma
184	B8	10111000	¸	Spacing cedilla
185	B9	10111001	¹	Superscript one
186	BA	10111010	º	Masculine ordinal indicator
187	BB	10111011	»	Right double angle quotes
188	BC	10111100	¼	Fraction one quarter
189	BD	10111101	½	Fraction one half
190	BE	10111110	¾	Fraction three quarters
191	BF	10111111	¿	Inverted question mark
192	C0	11000000	À	Latin capital letter A with grave
193	C1	11000001	Á	Latin capital letter A with acute
194	C2	11000010	Â	Latin capital letter A with circumflex
195	C3	11000011	Ã	Latin capital letter A with tilde
196	C4	11000100	Ä	Latin capital letter A with diaeresis
197	C5	11000101	Å	Latin capital letter A with ring above
198	C6	11000110	Æ	Latin capital letter AE
199	C7	11000111	Ç	Latin capital letter C with cedilla
200	C8	11001000	È	Latin capital letter E with grave
201	C9	11001001	É	Latin capital letter E with acute
202	CA	11001010	Ê	Latin capital letter E with circumflex
203	CB	11001011	Ë	Latin capital letter E with diaeresis
204	CC	11001100	Ì	Latin capital letter I with grave
205	CD	11001101	Í	Latin capital letter I with acute
206	CE	11001110	Î	Latin capital letter I with circumflex
207	CF	11001111	Ï	Latin capital letter I with diaeresis
208	D0	11010000	Ð	Latin capital letter ETH
209	D1	11010001	Ñ	Latin capital letter N with tilde
210	D2	11010010	Ò	Latin capital letter O with grave
211	D3	11010011	Ó	Latin capital letter O with acute
212	D4	11010100	Ô	Latin capital letter O with circumflex
213	D5	11010101	Õ	Latin capital letter O with tilde
214	D6	11010110	Ö	Latin capital letter O with diaeresis
215	D7	11010111	×	Multiplication sign
216	D8	11011000	Ø	Latin capital letter O with slash
217	D9	11011001	Ù	Latin capital letter U with grave
218	DA	11011010	Ú	Latin capital letter U with acute
219	DB	11011011	Û	Latin capital letter U with circumflex
220	DC	11011100	Ü	Latin capital letter U with diaeresis
221	DD	11011101	Ý	Latin capital letter Y with acute
222	DE	11011110	Þ	Latin capital letter THORN
223	DF	11011111	ß	Latin small letter sharp s - ess-zed
224	E0	11100000	à	Latin small letter a with grave
225	E1	11100001	á	Latin small letter a with acute
226	E2	11100010	â	Latin small letter a with circumflex
227	E3	11100011	ã	Latin small letter a with tilde
228	E4	11100100	ä	Latin small letter a with diaeresis
229	E5	11100101	å	Latin small letter a with ring above
230	E6	11100110	æ	Latin small letter ae
231	E7	11100111	ç	Latin small letter c with cedilla
232	E8	11101000	è	Latin small letter e with grave
233	E9	11101001	é	Latin small letter e with acute
234	EA	11101010	ê	Latin small letter e with circumflex
235	EB	11101011	ë	Latin small letter e with diaeresis
236	EC	11101100	ì	Latin small letter i with grave
237	ED	11101101	í	Latin small letter i with acute
238	EE	11101110	î	Latin small letter i with circumflex
239	EF	11101111	ï	Latin small letter i with diaeresis
240	F0	11110000	ð	Latin small letter eth
241	F1	11110001	ñ	Latin small letter n with tilde
242	F2	11110010	ò	Latin small letter o with grave
243	F3	11110011	ó	Latin small letter o with acute
244	F4	11110100	ô	Latin small letter o with circumflex
245	F5	11110101	õ	Latin small letter o with tilde
246	F6	11110110	ö	Latin small letter o with diaeresis
247	F7	11110111	÷	Division sign
248	F8	11111000	ø	Latin small letter o with slash
249	F9	11111001	ù	Latin small letter u with grave
250	FA	11111010	ú	Latin small letter u with acute
251	FB	11111011	û	Latin small letter u with circumflex
252	FC	11111100	ü	Latin small letter u with diaeresis
253	FD	11111101	ý	Latin small letter y with acute
254	FE	11111110	þ	Latin small letter thorn
255	FF	11111111	ÿ	Latin small letter y with diaeresis

How to use this ASCII converter

Look at what you want to convert. Is it a visible ASCII string, a hexadecimal, binary, or decimal number? Select the corresponding option from the "Input type" list.
Now, input the data you want to convert in the "Input" field.
Optionally, you can define the separator you want for your output results. By default, it's a space, but you can use commas, semicolons, or whatever suits your needs.

Finally, your result will be ready!

FAQs

How do I convert ASCII?

"Converting ASCII" typically consists of switching between a character (e.g., the letter "a", the symbol "%", or the number "2432") and an equivalent value represented by numbers (in the decimal, hexadecimal, or binary representation). This process is known as "character encoding."

We can do this in two ways:

Manually, using mathematical rules to convert between hex, dec, and binary, then using a table to convert any of them to ASCII characters; or
Using an ASCII code translator such as our Omni ASCII converter.

How do I convert from hex to its ASCII string?

To convert hexadecimal to ASCII text:

Identify the hexadecimal numbers: hex numbers have two characters, so if, for example, the given hex number is 48656C6C6F, that means there are five hex numbers (48, 65, 6C, 6C, and 6F).
Convert each hexadecimal number to a decimal number.
Once you know the decimal numbers, find their equivalent character using a decimal-to-ASCII chart or an online converter.

How many ASCII characters are there?

There are 128 characters in the original ASCII and 256 characters in the extended ASCII standard. Keep in mind that the first 32 characters correspond to unprintable control codes used to administer peripherals such as printers.

What is the ASCII value of a?

For the lowercase letter "a", the ASCII values are (in various formats):

Binary: 01100001
Octal: 141
Hexadecimal: 61
Decimal: 97
HTML number: a