ASCII Table

Standard ASCII Table

ASCII, which stands for the American Standard Code for Information Interchange, is a character encoding standard used for representing text in computers, communication equipment, and other digital devices. Each character is assigned a numeric value between 0 and 127 in the standard ASCII specification. ASCII was developed in the early 1960s and became widely adopted due to its simplicity and compatibility with early computing systems.

Standard ASCII contains:

Control characters (0-31 and 127), such as carriage return (CR), line feed (LF), and backspace (BS), which are used for text formatting and control in data streams.
Printable characters (32-126), including:
- Uppercase and lowercase English letters (A-Z, a-z)
- Digits (0-9)
- Common punctuation marks and symbols (e.g., !, @, #, $, %, &, *)
- Whitespace characters like the space (decimal 32)

Standard ASCII is universally supported across all modern programming languages and systems. It forms the basis for most modern character encodings, including UTF-8.

The standard ASCII table is as follows:

Decimal 0 - 31
Dec	Bin	Oct	Hex	ASCII
0	00000000	000	00	NUL
1	00000001	001	01	SOH
2	00000010	002	02	STX
3	00000011	003	03	ETX
4	00000100	004	04	EOT
5	00000101	005	05	ENQ
6	00000110	006	06	ACK
7	00000111	007	07	BEL
8	00001000	010	08	BS
9	00001001	011	09	TAB
10	00001010	012	0A	LF
11	00001011	013	0B	VT
12	00001100	014	0C	FF
13	00001101	015	0D	CR
14	00001110	016	0E	SO
15	00001111	017	0F	SI
16	00010000	020	10	DLE
17	00010001	021	11	DC1
18	00010010	022	12	DC2
19	00010011	023	13	DC3
20	00010100	024	14	DC4
21	00010101	025	15	NAK
22	00010110	026	16	SYN
23	00010111	027	17	ETB
24	00011000	030	18	CAN
25	00011001	031	19	EM
26	00011010	032	1A	SUB
27	00011011	033	1B	ESC
28	00011100	034	1C	FS
29	00011101	035	1D	GS
30	00011110	036	1E	RS
31	00011111	037	1F	US

Decimal 32 - 63
Dec	Bin	Oct	Hex	ASCII
32	00100000	040	20	SPACE
33	00100001	041	21	!
34	00100010	042	22	"
35	00100011	043	23	#
36	00100100	044	24	$
37	00100101	045	25	%
38	00100110	046	26	&
39	00100111	047	27	'
40	00101000	050	28	(
41	00101001	051	29	)
42	00101010	052	2A	*
43	00101011	053	2B	+
44	00101100	054	2C	,
45	00101101	055	2D	-
46	00101110	056	2E	.
47	00101111	057	2F	/
48	00110000	060	30	0
49	00110001	061	31	1
50	00110010	062	32	2
51	00110011	063	33	3
52	00110100	064	34	4
53	00110101	065	35	5
54	00110110	066	36	6
55	00110111	067	37	7
56	00111000	070	38	8
57	00111001	071	39	9
58	00111010	072	3A	:
59	00111011	073	3B	;
60	00111100	074	3C	<
61	00111101	075	3D	=
62	00111110	076	3E	>
63	00111111	077	3F	?

Decimal 64 - 95
Dec	Bin	Oct	Hex	ASCII
64	01000000	100	40	@
65	01000001	101	41	A
66	01000010	102	42	B
67	01000011	103	43	C
68	01000100	104	44	D
69	01000101	105	45	E
70	01000110	106	46	F
71	01000111	107	47	G
72	01001000	110	48	H
73	01001001	111	49	I
74	01001010	112	4A	J
75	01001011	113	4B	K
76	01001100	114	4C	L
77	01001101	115	4D	M
78	01001110	116	4E	N
79	01001111	117	4F	O
80	01010000	120	50	P
81	01010001	121	51	Q
82	01010010	122	52	R
83	01010011	123	53	S
84	01010100	124	54	T
85	01010101	125	55	U
86	01010110	126	56	V
87	01010111	127	57	W
88	01011000	130	58	X
89	01011001	131	59	Y
90	01011010	132	5A	Z
91	01011011	133	5B	[
92	01011100	134	5C	\
93	01011101	135	5D	]
94	01011110	136	5E	^
95	01011111	137	5F	_

Decimal 96 - 127
Dec	Bin	Oct	Hex	ASCII
96	01100000	140	60	`
97	01100001	141	61	a
98	01100010	142	62	b
99	01100011	143	63	c
100	01100100	144	64	d
101	01100101	145	65	e
102	01100110	146	66	f
103	01100111	147	67	g
104	01101000	150	68	h
105	01101001	151	69	i
106	01101010	152	6A	j
107	01101011	153	6B	k
108	01101100	154	6C	l
109	01101101	155	6D	m
110	01101110	156	6E	n
111	01101111	157	6F	o
112	01110000	160	70	p
113	01110001	161	71	q
114	01110010	162	72	r
115	01110011	163	73	s
116	01110100	164	74	t
117	01110101	165	75	u
118	01110110	166	76	v
119	01110111	167	77	w
120	01111000	170	78	x
121	01111001	171	79	y
122	01111010	172	7A	z
123	01111011	173	7B	{
124	01111100	174	7C	\|
125	01111101	175	7D	}
126	01111110	176	7E	~
127	01111111	177	7F	DEL

Extended ASCII Table

Extended ASCII refers to the set of characters that occupy the decimal values 128 through 255. These characters are not part of the original ASCII standard but are commonly used in many systems to support additional characters needed for various languages and symbols.

Since the original ASCII only used 7 bits (128 values), the extended ASCII set uses the 8th bit to allow for 256 total values. The characters in this range vary depending on the specific character encoding used, but common implementations include:

ISO 8859-1 (Latin-1): Adds accented characters for Western European languages, currency symbols, and additional punctuation.
Windows-1252: A superset of ISO 8859-1 used by Microsoft Windows, which includes typographic quotation marks, the euro sign, and more.
Box-drawing characters and graphic symbols in certain legacy DOS-based encodings (e.g., Code Page 437).

Extended ASCII is not standardized in the same way as the original ASCII set, which can lead to inconsistencies across different systems and encodings. For modern applications, Unicode (such as UTF-8) is typically used to represent a much larger set of characters across multiple languages and symbols while maintaining backward compatibility with standard ASCII.

Decimal 128 - 159
Dec	Bin	Oct	Hex	ASCII
128	10000000	200	80	€
129	10000001	201	81	unused
130	10000010	202	82	‚
131	10000011	203	83	ƒ
132	10000100	204	84	„
133	10000101	205	85	…
134	10000110	206	86	†
135	10000111	207	87	‡
136	10001000	210	88	ˆ
137	10001001	211	89	‰
138	10001010	212	8A	Š
139	10001011	213	8B	‹
140	10001100	214	8C	Œ
141	10001101	215	8D	unused
142	10001110	216	8E	Ž
143	10001111	217	8F	unused
144	10010000	220	90	unused
145	10010001	221	91	‘
146	10010010	222	92	’
147	10010011	223	93	“
148	10010100	224	94	”
149	10010101	225	95	•
150	10010110	226	96	–
151	10010111	227	97	—
152	10011000	230	98	˜
153	10011001	231	99	™
154	10011010	232	9A	š
155	10011011	233	9B	›
156	10011100	234	9C	œ
157	10011101	235	9D	unused
158	10011110	236	9E	ž
159	10011111	237	9F	Ÿ

Decimal 160 - 191
Dec	Bin	Oct	Hex	ASCII
160	10100000	240	A0
161	10100001	241	A1	¡
162	10100010	242	A2	¢
163	10100011	243	A3	£
164	10100100	244	A4	¤
165	10100101	245	A5	¥
166	10100110	246	A6	¦
167	10100111	247	A7	§
168	10101000	250	A8	¨
169	10101001	251	A9	©
170	10101010	252	AA	ª
171	10101011	253	AB	«
172	10101100	254	AC	¬
173	10101101	255	AD
174	10101110	256	AE	®
175	10101111	257	AF	¯
176	10110000	260	B0	°
177	10110001	261	B1	±
178	10110010	262	B2	²
179	10110011	263	B3	³
180	10110100	264	B4	´
181	10110101	265	B5	µ
182	10110110	266	B6	¶
183	10110111	267	B7	·
184	10111000	270	B8	¸
185	10111001	271	B9	¹
186	10111010	272	BA	º
187	10111011	273	BB	»
188	10111100	274	BC	¼
189	10111101	275	BD	½
190	10111110	276	BE	¾
191	10111111	277	BF	¿

Decimal 192 - 223
Dec	Bin	Oct	Hex	ASCII
192	11000000	300	C0	À
193	11000001	301	C1	Á
194	11000010	302	C2	Â
195	11000011	303	C3	Ã
196	11000100	304	C4	Ä
197	11000101	305	C5	Å
198	11000110	306	C6	Æ
199	11000111	307	C7	Ç
200	11001000	310	C8	È
201	11001001	311	C9	É
202	11001010	312	CA	Ê
203	11001011	313	CB	Ë
204	11001100	314	CC	Ì
205	11001101	315	CD	Í
206	11001110	316	CE	Î
207	11001111	317	CF	Ï
208	11010000	320	D0	Ð
209	11010001	321	D1	Ñ
210	11010010	322	D2	Ò
211	11010011	323	D3	Ó
212	11010100	324	D4	Ô
213	11010101	325	D5	Õ
214	11010110	326	D6	Ö
215	11010111	327	D7	×
216	11011000	330	D8	Ø
217	11011001	331	D9	Ù
218	11011010	332	DA	Ú
219	11011011	333	DB	Û
220	11011100	334	DC	Ü
221	11011101	335	DD	Ý
222	11011110	336	DE	Þ
223	11011111	337	DF	ß

Decimal 224 - 255
Dec	Bin	Oct	Hex	ASCII
224	11100000	340	E0	à
225	11100001	341	E1	á
226	11100010	342	E2	â
227	11100011	343	E3	ã
228	11100100	344	E4	ä
229	11100101	345	E5	å
230	11100110	346	E6	æ
231	11100111	347	E7	ç
232	11101000	350	E8	è
233	11101001	351	E9	é
234	11101010	352	EA	ê
235	11101011	353	EB	ë
236	11101100	354	EC	ì
237	11101101	355	ED	í
238	11101110	356	EE	î
239	11101111	357	EF	ï
240	11110000	360	F0	ð
241	11110001	361	F1	ñ
242	11110010	362	F2	ò
243	11110011	363	F3	ó
244	11110100	364	F4	ô
245	11110101	365	F5	õ
246	11110110	366	F6	ö
247	11110111	367	F7	÷
248	11111000	370	F8	ø
249	11111001	371	F9	ù
250	11111010	372	FA	ú
251	11111011	373	FB	û
252	11111100	374	FC	ü
253	11111101	375	FD	ý
254	11111110	376	FE	þ
255	11111111	377	FF	ÿ

More About Extended ASCII

You might have noticed that some characters are unused, namely decimal values 141, 143, 144, and 157. This is because the ISO/IEC 8859-1 (Latin-1) character set, a widely adopted standard, does not assign visible characters to these positions. Instead, they were reserved for control characters in older standards like CP437 or Windows-1252.

The character at the decimal value 160 is the Non-Breaking Space character. It appears invisible, but it's simply an empty character.

Additionally, character 173 is the Soft Hyphen (SHY). It is an invisible character used to suggest where a word can break at the end of a line. Most modern browsers do not render it unless a line break occurs at that point, which is why it often appears blank in character tables.