Reference

ASCII Table

A complete, searchable ASCII reference covering all 128 standard codes plus the Latin-1 extended set. Every character is listed with its decimal, hexadecimal, octal, and 8-bit binary value, its glyph, HTML entity, and canonical name — and the 33 control codes get a plain-language explanation of what each one does. Filter by control, printable, or extended ranges, search by number, character, or name, and click any value to copy it. The whole table is static and runs in your browser, so it loads instantly and works offline.

All 128 standard ASCII codes plus the 128 Latin-1 extended codes
Decimal, hex, octal, and 8-bit binary for every character
HTML entities (named and numeric) and C escape sequences
Plain-language explanations for all 33 control characters
Instant search by number, glyph, name, abbreviation, or escape
Click any value to copy it — codes, glyphs, and entities

Control characters (0–31, 127)

Non-printing codes that control devices and data flow rather than display a glyph.

Dec	Hex	Oct	Char	Abbr	Escape	Name
0	00	000	␀ ^@	NUL	\0	Null Originally padding; now widely used to terminate strings in C and other languages.
1	01	001	␁ ^A	SOH	—	Start of Heading Marks the beginning of a message header in old transmission protocols.
2	02	002	␂ ^B	STX	—	Start of Text Marks the start of the message body, ending the header begun by SOH.
3	03	003	␃ ^C	ETX	—	End of Text Marks the end of the message body; sent by Ctrl+C, which terminals map to interrupt.
4	04	004	␄ ^D	EOT	—	End of Transmission Signals the end of a transmission; sent by Ctrl+D, used as end-of-file in Unix shells.
5	05	005	␅ ^E	ENQ	—	Enquiry Requests a response or status from the remote station, such as its identity.
6	06	006	␆ ^F	ACK	—	Acknowledge Positive response confirming that data was received correctly.
7	07	007	␇ ^G	BEL	\a	Bell Triggers an audible beep or a visual flash; the \a escape in C.
8	08	010	␈ ^H	BS	\b	Backspace Moves the cursor one position back, often to delete the previous character.
9	09	011	␉ ^I	HT	\t	Horizontal Tab Advances to the next horizontal tab stop; the \t escape.
10	0A	012	␊ ^J	LF	\n	Line Feed Moves down one line; the Unix and macOS newline, the \n escape.
11	0B	013	␋ ^K	VT	\v	Vertical Tab Advances to the next vertical tab stop; the \v escape.
12	0C	014	␌ ^L	FF	\f	Form Feed Ejects the page or clears the screen; the \f escape.
13	0D	015	␍ ^M	CR	\r	Carriage Return Returns the cursor to the start of the line; part of the Windows newline, the \r escape.
14	0E	016	␎ ^N	SO	—	Shift Out Switches to an alternate character set until Shift In is received.
15	0F	017	␏ ^O	SI	—	Shift In Switches back to the standard character set after Shift Out.
16	10	020	␐ ^P	DLE	—	Data Link Escape Marks following bytes as control data rather than text in a data link.
17	11	021	␑ ^Q	DC1	—	Device Control 1 Device control, commonly XON to resume paused transmission in flow control.
18	12	022	␒ ^R	DC2	—	Device Control 2 A general-purpose device control code with no fixed modern meaning.
19	13	023	␓ ^S	DC3	—	Device Control 3 Device control, commonly XOFF to pause transmission in flow control.
20	14	024	␔ ^T	DC4	—	Device Control 4 A general-purpose device control code, sometimes used to stop a device.
21	15	025	␕ ^U	NAK	—	Negative Acknowledge Negative response indicating data was received with errors; the opposite of ACK.
22	16	026	␖ ^V	SYN	—	Synchronous Idle Sent to keep synchronous links in sync when no other data is being transmitted.
23	17	027	␗ ^W	ETB	—	End of Transmission Block Marks the end of a block of transmitted data.
24	18	030	␘ ^X	CAN	—	Cancel Indicates that the preceding data is in error and should be disregarded.
25	19	031	␙ ^Y	EM	—	End of Medium Marks the physical end of a tape or other storage medium.
26	1A	032	␚ ^Z	SUB	—	Substitute Replaces a character found to be invalid or in error; used as end-of-file on DOS.
27	1B	033	␛ ^[	ESC	\e	Escape Introduces an escape sequence; the basis of terminal and ANSI control codes, the \e escape.
28	1C	034	␜ ^\	FS	—	File Separator The coarsest of the four separators, marking a boundary between files.
29	1D	035	␝ ^]	GS	—	Group Separator Marks a boundary between groups of records.
30	1E	036	␞ ^^	RS	—	Record Separator Marks a boundary between records within a group.
31	1F	037	␟ ^_	US	—	Unit Separator The finest separator, marking a boundary between fields within a record.
127	7F	177	␡ ^?	DEL	—	Delete Originally punched out all holes to delete a character on paper tape; sent by the Delete key.

Printable characters (32–126)

The visible ASCII characters: space, punctuation, digits, and the Latin letters.

Dec	Hex	Oct	Binary	Char	HTML	Name
32	20	040	00100000			Space
33	21	041	00100001	!	!	Exclamation Mark
34	22	042	00100010	"	" "	Quotation Mark
35	23	043	00100011	#	#	Number Sign
36	24	044	00100100	$	$	Dollar Sign
37	25	045	00100101	%	%	Percent Sign
38	26	046	00100110	&	& &	Ampersand
39	27	047	00100111	'	' '	Apostrophe
40	28	050	00101000	(	(	Left Parenthesis
41	29	051	00101001	)	)	Right Parenthesis
42	2A	052	00101010	*	*	Asterisk
43	2B	053	00101011	+	+	Plus Sign
44	2C	054	00101100	,	,	Comma
45	2D	055	00101101	-	-	Hyphen-Minus
46	2E	056	00101110	.	.	Full Stop
47	2F	057	00101111	/	/	Solidus (Slash)
48	30	060	00110000	0	0	Digit 0
49	31	061	00110001	1	1	Digit 1
50	32	062	00110010	2	2	Digit 2
51	33	063	00110011	3	3	Digit 3
52	34	064	00110100	4	4	Digit 4
53	35	065	00110101	5	5	Digit 5
54	36	066	00110110	6	6	Digit 6
55	37	067	00110111	7	7	Digit 7
56	38	070	00111000	8	8	Digit 8
57	39	071	00111001	9	9	Digit 9
58	3A	072	00111010	:	:	Colon
59	3B	073	00111011	;	;	Semicolon
60	3C	074	00111100	<	< <	Less-Than Sign
61	3D	075	00111101	=	=	Equals Sign
62	3E	076	00111110	>	> >	Greater-Than Sign
63	3F	077	00111111	?	?	Question Mark
64	40	100	01000000	@	@	Commercial At
65	41	101	01000001	A	A	Latin Capital Letter A
66	42	102	01000010	B	B	Latin Capital Letter B
67	43	103	01000011	C	C	Latin Capital Letter C
68	44	104	01000100	D	D	Latin Capital Letter D
69	45	105	01000101	E	E	Latin Capital Letter E
70	46	106	01000110	F	F	Latin Capital Letter F
71	47	107	01000111	G	G	Latin Capital Letter G
72	48	110	01001000	H	H	Latin Capital Letter H
73	49	111	01001001	I	I	Latin Capital Letter I
74	4A	112	01001010	J	J	Latin Capital Letter J
75	4B	113	01001011	K	K	Latin Capital Letter K
76	4C	114	01001100	L	L	Latin Capital Letter L
77	4D	115	01001101	M	M	Latin Capital Letter M
78	4E	116	01001110	N	N	Latin Capital Letter N
79	4F	117	01001111	O	O	Latin Capital Letter O
80	50	120	01010000	P	P	Latin Capital Letter P
81	51	121	01010001	Q	Q	Latin Capital Letter Q
82	52	122	01010010	R	R	Latin Capital Letter R
83	53	123	01010011	S	S	Latin Capital Letter S
84	54	124	01010100	T	T	Latin Capital Letter T
85	55	125	01010101	U	U	Latin Capital Letter U
86	56	126	01010110	V	V	Latin Capital Letter V
87	57	127	01010111	W	W	Latin Capital Letter W
88	58	130	01011000	X	X	Latin Capital Letter X
89	59	131	01011001	Y	Y	Latin Capital Letter Y
90	5A	132	01011010	Z	Z	Latin Capital Letter Z
91	5B	133	01011011	[	[	Left Square Bracket
92	5C	134	01011100	\	\	Reverse Solidus (Backslash)
93	5D	135	01011101	]	]	Right Square Bracket
94	5E	136	01011110	^	^	Circumflex Accent
95	5F	137	01011111	_	_	Low Line (Underscore)
96	60	140	01100000	`	`	Grave Accent
97	61	141	01100001	a	a	Latin Small Letter a
98	62	142	01100010	b	b	Latin Small Letter b
99	63	143	01100011	c	c	Latin Small Letter c
100	64	144	01100100	d	d	Latin Small Letter d
101	65	145	01100101	e	e	Latin Small Letter e
102	66	146	01100110	f	f	Latin Small Letter f
103	67	147	01100111	g	g	Latin Small Letter g
104	68	150	01101000	h	h	Latin Small Letter h
105	69	151	01101001	i	i	Latin Small Letter i
106	6A	152	01101010	j	j	Latin Small Letter j
107	6B	153	01101011	k	k	Latin Small Letter k
108	6C	154	01101100	l	l	Latin Small Letter l
109	6D	155	01101101	m	m	Latin Small Letter m
110	6E	156	01101110	n	n	Latin Small Letter n
111	6F	157	01101111	o	o	Latin Small Letter o
112	70	160	01110000	p	p	Latin Small Letter p
113	71	161	01110001	q	q	Latin Small Letter q
114	72	162	01110010	r	r	Latin Small Letter r
115	73	163	01110011	s	s	Latin Small Letter s
116	74	164	01110100	t	t	Latin Small Letter t
117	75	165	01110101	u	u	Latin Small Letter u
118	76	166	01110110	v	v	Latin Small Letter v
119	77	167	01110111	w	w	Latin Small Letter w
120	78	170	01111000	x	x	Latin Small Letter x
121	79	171	01111001	y	y	Latin Small Letter y
122	7A	172	01111010	z	z	Latin Small Letter z
123	7B	173	01111011	{	{	Left Curly Bracket
124	7C	174	01111100	\|	\|	Vertical Line
125	7D	175	01111101	}	}	Right Curly Bracket
126	7E	176	01111110	~	~	Tilde

Extended characters (128–255)

The Latin-1 (ISO-8859-1) upper half — accented letters, symbols, and the C1 control codes.

Codes 128–255 are shown using ISO-8859-1 (Latin-1), where 128–159 are C1 control codes. In Windows-1252 those positions hold printable symbols such as the euro sign instead.

Dec	Hex	Oct	Binary	Char	HTML	Name
128	80	200	10000000	PAD		Padding Character (C1)
129	81	201	10000001	HOP		High Octet Preset (C1)
130	82	202	10000010	BPH		Break Permitted Here (C1)
131	83	203	10000011	NBH		No Break Here (C1)
132	84	204	10000100	IND		Index (C1)
133	85	205	10000101	NEL		Next Line (C1)
134	86	206	10000110	SSA		Start of Selected Area (C1)
135	87	207	10000111	ESA		End of Selected Area (C1)
136	88	210	10001000	HTS		Character Tabulation Set (C1)
137	89	211	10001001	HTJ		Character Tabulation with Justification (C1)
138	8A	212	10001010	VTS		Line Tabulation Set (C1)
139	8B	213	10001011	PLD		Partial Line Forward (C1)
140	8C	214	10001100	PLU		Partial Line Backward (C1)
141	8D	215	10001101	RI		Reverse Line Feed (C1)
142	8E	216	10001110	SS2		Single-Shift Two (C1)
143	8F	217	10001111	SS3		Single-Shift Three (C1)
144	90	220	10010000	DCS		Device Control String (C1)
145	91	221	10010001	PU1		Private Use One (C1)
146	92	222	10010010	PU2		Private Use Two (C1)
147	93	223	10010011	STS		Set Transmit State (C1)
148	94	224	10010100	CCH		Cancel Character (C1)
149	95	225	10010101	MW		Message Waiting (C1)
150	96	226	10010110	SPA		Start of Protected Area (C1)
151	97	227	10010111	EPA		End of Protected Area (C1)
152	98	230	10011000	SOS		Start of String (C1)
153	99	231	10011001	SGC		Single Graphic Character Introducer (C1)
154	9A	232	10011010	SCI		Single Character Introducer (C1)
155	9B	233	10011011	CSI		Control Sequence Introducer (C1)
156	9C	234	10011100	ST		String Terminator (C1)
157	9D	235	10011101	OSC		Operating System Command (C1)
158	9E	236	10011110	PM		Privacy Message (C1)
159	9F	237	10011111	APC		Application Program Command (C1)
160	A0	240	10100000			No-Break Space
161	A1	241	10100001	¡	¡ ¡	Inverted Exclamation Mark
162	A2	242	10100010	¢	¢ ¢	Cent Sign
163	A3	243	10100011	£	£ £	Pound Sign
164	A4	244	10100100	¤	¤ ¤	Currency Sign
165	A5	245	10100101	¥	¥ ¥	Yen Sign
166	A6	246	10100110	¦	¦ ¦	Broken Bar
167	A7	247	10100111	§	§ §	Section Sign
168	A8	250	10101000	¨	¨ ¨	Diaeresis
169	A9	251	10101001	©	© ©	Copyright Sign
170	AA	252	10101010	ª	ª ª	Feminine Ordinal Indicator
171	AB	253	10101011	«	« «	Left-Pointing Double Angle Quotation Mark
172	AC	254	10101100	¬	¬ ¬	Not Sign
173	AD	255	10101101			Soft Hyphen
174	AE	256	10101110	®	® ®	Registered Sign
175	AF	257	10101111	¯	¯ ¯	Macron
176	B0	260	10110000	°	° °	Degree Sign
177	B1	261	10110001	±	± ±	Plus-Minus Sign
178	B2	262	10110010	²	² ²	Superscript Two
179	B3	263	10110011	³	³ ³	Superscript Three
180	B4	264	10110100	´	´ ´	Acute Accent
181	B5	265	10110101	µ	µ µ	Micro Sign
182	B6	266	10110110	¶	¶ ¶	Pilcrow Sign
183	B7	267	10110111	·	· ·	Middle Dot
184	B8	270	10111000	¸	¸ ¸	Cedilla
185	B9	271	10111001	¹	¹ ¹	Superscript One
186	BA	272	10111010	º	º º	Masculine Ordinal Indicator
187	BB	273	10111011	»	» »	Right-Pointing Double Angle Quotation Mark
188	BC	274	10111100	¼	¼ ¼	Vulgar Fraction One Quarter
189	BD	275	10111101	½	½ ½	Vulgar Fraction One Half
190	BE	276	10111110	¾	¾ ¾	Vulgar Fraction Three Quarters
191	BF	277	10111111	¿	¿ ¿	Inverted Question Mark
192	C0	300	11000000	À	À À	Latin Capital Letter A with Grave
193	C1	301	11000001	Á	Á Á	Latin Capital Letter A with Acute
194	C2	302	11000010	Â	Â Â	Latin Capital Letter A with Circumflex
195	C3	303	11000011	Ã	Ã Ã	Latin Capital Letter A with Tilde
196	C4	304	11000100	Ä	Ä Ä	Latin Capital Letter A with Diaeresis
197	C5	305	11000101	Å	Å Å	Latin Capital Letter A with Ring Above
198	C6	306	11000110	Æ	Æ Æ	Latin Capital Letter AE
199	C7	307	11000111	Ç	Ç Ç	Latin Capital Letter C with Cedilla
200	C8	310	11001000	È	È È	Latin Capital Letter E with Grave
201	C9	311	11001001	É	É É	Latin Capital Letter E with Acute
202	CA	312	11001010	Ê	Ê Ê	Latin Capital Letter E with Circumflex
203	CB	313	11001011	Ë	Ë Ë	Latin Capital Letter E with Diaeresis
204	CC	314	11001100	Ì	Ì Ì	Latin Capital Letter I with Grave
205	CD	315	11001101	Í	Í Í	Latin Capital Letter I with Acute
206	CE	316	11001110	Î	Î Î	Latin Capital Letter I with Circumflex
207	CF	317	11001111	Ï	Ï Ï	Latin Capital Letter I with Diaeresis
208	D0	320	11010000	Ð	Ð Ð	Latin Capital Letter Eth
209	D1	321	11010001	Ñ	Ñ Ñ	Latin Capital Letter N with Tilde
210	D2	322	11010010	Ò	Ò Ò	Latin Capital Letter O with Grave
211	D3	323	11010011	Ó	Ó Ó	Latin Capital Letter O with Acute
212	D4	324	11010100	Ô	Ô Ô	Latin Capital Letter O with Circumflex
213	D5	325	11010101	Õ	Õ Õ	Latin Capital Letter O with Tilde
214	D6	326	11010110	Ö	Ö Ö	Latin Capital Letter O with Diaeresis
215	D7	327	11010111	×	× ×	Multiplication Sign
216	D8	330	11011000	Ø	Ø Ø	Latin Capital Letter O with Stroke
217	D9	331	11011001	Ù	Ù Ù	Latin Capital Letter U with Grave
218	DA	332	11011010	Ú	Ú Ú	Latin Capital Letter U with Acute
219	DB	333	11011011	Û	Û Û	Latin Capital Letter U with Circumflex
220	DC	334	11011100	Ü	Ü Ü	Latin Capital Letter U with Diaeresis
221	DD	335	11011101	Ý	Ý Ý	Latin Capital Letter Y with Acute
222	DE	336	11011110	Þ	Þ Þ	Latin Capital Letter Thorn
223	DF	337	11011111	ß	ß ß	Latin Small Letter Sharp S
224	E0	340	11100000	à	à à	Latin Small Letter a with Grave
225	E1	341	11100001	á	á á	Latin Small Letter a with Acute
226	E2	342	11100010	â	â â	Latin Small Letter a with Circumflex
227	E3	343	11100011	ã	ã ã	Latin Small Letter a with Tilde
228	E4	344	11100100	ä	ä ä	Latin Small Letter a with Diaeresis
229	E5	345	11100101	å	å å	Latin Small Letter a with Ring Above
230	E6	346	11100110	æ	æ æ	Latin Small Letter AE
231	E7	347	11100111	ç	ç ç	Latin Small Letter c with Cedilla
232	E8	350	11101000	è	è è	Latin Small Letter e with Grave
233	E9	351	11101001	é	é é	Latin Small Letter e with Acute
234	EA	352	11101010	ê	ê ê	Latin Small Letter e with Circumflex
235	EB	353	11101011	ë	ë ë	Latin Small Letter e with Diaeresis
236	EC	354	11101100	ì	ì ì	Latin Small Letter i with Grave
237	ED	355	11101101	í	í í	Latin Small Letter i with Acute
238	EE	356	11101110	î	î î	Latin Small Letter i with Circumflex
239	EF	357	11101111	ï	ï ï	Latin Small Letter i with Diaeresis
240	F0	360	11110000	ð	ð ð	Latin Small Letter Eth
241	F1	361	11110001	ñ	ñ ñ	Latin Small Letter n with Tilde
242	F2	362	11110010	ò	ò ò	Latin Small Letter o with Grave
243	F3	363	11110011	ó	ó ó	Latin Small Letter o with Acute
244	F4	364	11110100	ô	ô ô	Latin Small Letter o with Circumflex
245	F5	365	11110101	õ	õ õ	Latin Small Letter o with Tilde
246	F6	366	11110110	ö	ö ö	Latin Small Letter o with Diaeresis
247	F7	367	11110111	÷	÷ ÷	Division Sign
248	F8	370	11111000	ø	ø ø	Latin Small Letter O with Stroke
249	F9	371	11111001	ù	ù ù	Latin Small Letter u with Grave
250	FA	372	11111010	ú	ú ú	Latin Small Letter u with Acute
251	FB	373	11111011	û	û û	Latin Small Letter u with Circumflex
252	FC	374	11111100	ü	ü ü	Latin Small Letter u with Diaeresis
253	FD	375	11111101	ý	ý ý	Latin Small Letter y with Acute
254	FE	376	11111110	þ	þ þ	Latin Small Letter Thorn
255	FF	377	11111111	ÿ	ÿ ÿ	Latin Small Letter y with Diaeresis

Overview

A reference you can actually navigate: every ASCII and Latin-1 code in one place, with all four number bases, the glyph, the HTML entity, and a real explanation for the control codes — plus search, range filters, and one-click copy.

01

Every code, four ways

Each character shows its decimal, hexadecimal, octal, and zero-padded 8-bit binary value side by side, so you can read a byte in whichever base your tool, protocol, or debugger speaks.
02

Control codes explained

The 33 control characters are not just listed by abbreviation — each one has a plain-language description of what it was designed to do, from carriage return and line feed to the device-control and separator codes.
03

HTML entities and escapes

Printable characters list their numeric HTML entity and, where one exists, the named entity; control codes show the C escape sequence such as \n, \t, or \0 so you can drop the right token straight into code.
04

Search by anything

Type a decimal number, a 0x hex value, a single character, an abbreviation like LF, an escape like \t, or part of a name, and the table narrows instantly to matching rows across all three ranges.
05

Range filters

Switch between control, printable, and extended characters with one click when you only care about one part of the table, or keep everything visible and scroll the full chart.
06

Click to copy

Click any decimal, hex, octal value, glyph, escape, or HTML entity to copy it to the clipboard, with a brief confirmation, so you never have to retype a code by hand.
07

Standard and extended in one view

The classic 7-bit ASCII set sits alongside the Latin-1 extended half, with a clear note about how positions 128–159 differ between ISO-8859-1 and Windows-1252.
08

Static and offline

The whole table is generated at build time and ships as plain HTML, so it loads instantly, needs no network, and keeps working with the tab offline.

How to use

Find a character by browsing, filtering, or searching, read across the row for the representation you need, and copy it with a click.

01

Scroll the table, which is grouped into control, printable, and extended ranges.
02

Use the range filter to show only control, printable, or extended characters when you want to focus.
03

Search by decimal number, 0x hex value, a single glyph, an abbreviation, an escape sequence, or part of a name.
04

Read across a row for the decimal, hex, octal, binary, glyph, HTML entity, escape, and name.
05

Click any value — a code, glyph, escape, or entity — to copy it straight to your clipboard.

Details

A few details about how the table is built and what the columns mean.

Decimal, hex, and octal are the same byte written in base 10, 16, and 8; binary is shown zero-padded to a full 8 bits.
Control characters show a visible stand-in glyph from the Unicode Control Pictures block plus their caret notation, such as ^M for carriage return.
Named HTML entities are shown only where the HTML standard defines one; every character also has a numeric entity that always works.
C escape sequences appear for the control codes that have them — \0, \a, \b, \t, \n, \v, \f, \r, and \e.
Letters and digits use their canonical Unicode names; punctuation and symbols use their standard names too.
The extended range follows ISO-8859-1, so 160–255 are printable Latin-1 characters and 128–159 are C1 control codes.
Everything is rendered server-side, so search and copy work without loading a framework.

Use cases

An ASCII table is one of those references you reach for constantly once it is a click away — in low-level code, data wrangling, and debugging.

Reading bytes while debugging

Translate a raw byte value from a hex dump, packet capture, or memory view into the character it represents, or the other way around.
Handling line endings

Check the exact codes behind CR (13) and LF (10) when you are chasing a Windows-versus-Unix newline bug or normalizing text.
Writing escape sequences

Grab the right escape — \t, \n, \r, \0 — or the decimal value to build a string, regex, or terminal sequence by hand.
Producing HTML entities

Copy the named or numeric entity for characters like &, <, >, and the Latin-1 symbols so markup renders correctly regardless of file encoding.
Validating input ranges

Look up the boundaries of the digit, uppercase, and lowercase runs when you are writing a character check or a parser by hand.
Learning character encoding

See how the same character maps across decimal, hex, octal, and binary, and how ASCII forms the base of UTF-8 and Latin-1.
Configuring terminals and protocols

Find the control codes — BEL, ESC, the device-control and separator characters — that show up in terminal escape sequences and legacy line protocols.
Decoding obfuscated values

Convert a list of decimal or hex codes copied from a log or payload back into readable text one character at a time.

Best practices

A few habits make the table faster to use and keep your conversions correct.

Search by the representation you already have — paste a decimal, a 0x hex value, or the literal character to jump straight to its row.
Use the range filter to hide the extended set when you only care about standard 7-bit ASCII.
Prefer the numeric HTML entity when you need something guaranteed to work; reach for the named entity only when one is defined.
Remember that CR (13) and LF (10) are different codes — Windows uses both, Unix uses LF alone.
When you copy a glyph from the extended range, confirm the receiving system uses the same encoding, since 128–255 are encoding-dependent.
Treat the C1 control names (128–159) as ISO-8859-1; if you are in a Windows-1252 context those positions are printable symbols instead.

Limitations

A table like this is a lookup, not a converter, and a couple of edges are worth knowing.

This is a reference table, not a text encoder — paste a whole string into the binary or Unicode tools when you need to convert more than one character.
Standard ASCII is only 0–127; codes 128–255 depend entirely on the encoding, and this table shows the ISO-8859-1 (Latin-1) interpretation.
In Windows-1252 the range 128–159 holds printable punctuation and symbols rather than the C1 control codes shown here.
Binary is shown as 8 bits for readability even though standard ASCII only needs 7; the high bit is always 0 for codes 0–127.
A named HTML entity is listed only when the HTML standard defines one — the numeric entity is always available as a fallback.
Copying an extended glyph relies on the target using a compatible encoding; the underlying byte may render differently elsewhere.

FAQ

Common questions about ASCII, control characters, extended ASCII, and how the codes map across bases.

What is ASCII?

ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding that assigns the numbers 0–127 to control codes and to the printable English letters, digits, and punctuation. It is the foundation that UTF-8 and most other encodings build on, since they keep ASCII unchanged in their first 128 code points.

What are control characters?

Control characters are codes 0–31 plus 127 that do not print a glyph. They were designed to control devices and data flow — moving the cursor (carriage return, line feed, tab), ringing a bell, marking the end of a transmission, or separating records. This table gives each one a plain-language description.

What is the difference between CR and LF?

Carriage return (CR, code 13, \r) and line feed (LF, code 10, \n) are separate control codes. Unix and macOS end lines with LF alone, classic Windows uses CR followed by LF, and old Mac systems used CR alone, which is why mismatched line endings are a common source of bugs.

What is extended ASCII?

Extended ASCII refers to the codes 128–255 that use the eighth bit. There is no single standard for them: this table shows ISO-8859-1 (Latin-1), where 160–255 are accented letters and symbols and 128–159 are C1 control codes. Windows-1252 reuses 128–159 for printable characters such as the euro sign and curly quotes.

How do I convert a number to a character?

Find the row for that value in any base — search for the decimal number, the 0x hex value, or the octal — and read the Char column for the glyph, plus the name and HTML entity. To convert a whole string of bytes at once, use the text-to-binary tool instead.

Why is binary shown as 8 bits if ASCII is 7-bit?

Standard ASCII only needs 7 bits, so the high bit of codes 0–127 is always 0, but bytes are 8 bits in practice. Showing a full 8-bit byte matches how the value is stored and makes the extended 128–255 range, which does use the high bit, line up in the same column.

Does this tool send anything to a server?

No. The entire table is generated when the site is built and ships as static HTML, and the search and copy features run entirely in your browser, so nothing you type or copy is uploaded.

Related tools

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Control characters (0–31, 127)

Printable characters (32–126)

Extended characters (128–255)

Overview

Every code, four ways

Control codes explained

HTML entities and escapes

Search by anything

Range filters

Click to copy

Standard and extended in one view

Static and offline

How to use

Details

Use cases

Reading bytes while debugging

Handling line endings

Writing escape sequences

Producing HTML entities

Validating input ranges

Learning character encoding

Configuring terminals and protocols

Decoding obfuscated values