What is ASCII character code?

ASCII stands for American Standard Code for Information Interchange. It was developed by ANSI (American National Standards Institute).

It is a set of decimal coded value for all basic printable and non-printable characters. For example – A is represented as 65 in ASCII standard. Similarly, there exists an integer value to represent every printable and non-printable character.

ASCII exists in two versions 7-bit ASCII and 8-bit ASCII. The first 7-bit version of ASCII contains 128 characters (including upper and lower case alphabets, digits, punctuations, special characters, non-printable and control characters). It uses 7 bit in memory to represent single character.
Later 7 bit variant of ASCII was extended to 8 bit and is popularly known as Extended ASCII. It uses 8 bit to represent a character and can represent upto 255 characters.

List of all ASCII character codes

Non-Printable ASCII characters
Printable ASCII characters
Extended ASCII characters

Binary	Octal	Decimal	Hexadecimal	Symbol
00000000	000	0	00	NULL
00000001	001	1	01	SOH
00000010	002	2	02	STX
00000011	003	3	03	ETX
00000100	004	4	04	EOT
00000101	005	5	05	ENQ
00000110	006	6	06	ACK
00000111	007	7	07	BEL
00001000	010	8	08	BS
00001001	011	9	09	HT
00001010	012	10	0A	LF
00001011	013	11	0B	VT
00001100	014	12	0C	FF
00001101	015	13	0D	CR
00001110	016	14	0E	SO
00001111	017	15	0F	SI
00010000	020	16	10	DLE
00010001	021	17	11	DC1
00010010	022	18	12	DC2
00010011	023	19	13	DC3
00010100	024	20	14	DC4
00010101	025	21	15	NAK
00010110	026	22	16	SYN
00010111	027	23	17	ETB
00011000	030	24	18	CAN
00011001	031	25	19	EM
00011010	032	26	1A	SUB
00011011	033	27	1B	ESC
00011100	034	28	1C	FS
00011101	035	29	1D	GS
00011110	036	30	1E	RS
00011111	037	31	1F	US
00100000	040	32	20	SPACE
00100001	041	33	21	!
00100010	042	34	22	“
00100011	043	35	23	#
00100100	044	36	24	$
00100101	045	37	25	%
00100110	046	38	26	&
00100111	047	39	27	‘
00101000	050	40	28	(
00101001	051	41	29	)
00101010	052	42	2A	*
00101011	053	43	2B	+
00101100	054	44	2C	,
00101101	055	45	2D	–
00101110	056	46	2E	.
00101111	057	47	2F	/
00110000	060	48	30	0
00110001	061	49	31	1
00110010	062	50	32	2
00110011	063	51	33	3
00110100	064	52	34	4
00110101	065	53	35	5
00110110	066	54	36	6
00110111	067	55	37	7
00111000	070	56	38	8
00111001	071	57	39	9
00111010	072	58	3A	:
00111011	073	59	3B	;
00111100	074	60	3C	<
00111101	075	61	3D	=
00111110	076	62	3E	>
00111111	077	63	3F	?
01000000	100	64	40	@
01000001	101	65	41	A
01000010	102	66	42	B
01000011	103	67	43	C
01000100	104	68	44	D
01000101	105	69	45	E
01000110	106	70	46	F
01000111	107	71	47	G
01001000	110	72	48	H
01001001	111	73	49	I
01001010	112	74	4A	J
01001011	113	75	4B	K
01001100	114	76	4C	L
01001101	115	77	4D	M
01001110	116	78	4E	N
01001111	117	79	4F	O
01010000	120	80	50	P
01010001	121	81	51	Q
01010010	122	82	52	R
01010011	123	83	53	S
01010100	124	84	54	T
01010101	125	85	55	U
01010110	126	86	56	V
01010111	127	87	57	W
01011000	130	88	58	X
01011001	131	89	59	Y
01011010	132	90	5A	Z
01011011	133	91	5B	[
01011100	134	92	5C
01011101	135	93	5D	]
01011110	136	94	5E	^
01011111	137	95	5F	_
01100000	140	96	60	`
01100001	141	97	61	a
01100010	142	98	62	b
01100011	143	99	63	c
01100100	144	100	64	d
01100101	145	101	65	e
01100110	146	102	66	f
01100111	147	103	67	g
01101000	150	104	68	h
01101001	151	105	69	i
01101010	152	106	6A	j
01101011	153	107	6B	k
01101100	154	108	6C	l
01101101	155	109	6D	m
01101110	156	110	6E	n
01101111	157	111	6F	o
01110000	160	112	70	p
01110001	161	113	71	q
01110010	162	114	72	r
01110011	163	115	73	s
01110100	164	116	74	t
01110101	165	117	75	u
01110110	166	118	76	v
01110111	167	119	77	w
01111000	170	120	78	x
01111001	171	121	79	y
01111010	172	122	7A	z
01111011	173	123	7B	{
01111100	174	124	7C	\|
01111101	175	125	7D	}
01111110	176	126	7E	~
01111111	177	127	7F	DEL
10000000	200	128	80	Ç
10000001	201	129	81	ü
10000010	202	130	82	é
10000011	203	131	83	â
10000100	204	132	84	ä
10000101	205	133	85	à
10000110	206	134	86	å
10000111	207	135	87	ç
10001000	210	136	88	ê
10001001	211	137	89	ë
10001010	212	138	8A	è
10001011	213	139	8B	ï
10001100	214	140	8C	î
10001101	215	141	8D	ì
10001110	216	142	8E	Ä
10001111	217	143	8F	Å
10010000	220	144	90	É
10010001	221	145	91	æ
10010010	222	146	92	Æ
10010011	223	147	93	ô
10010100	224	148	94	ö
10010101	225	149	95	ò
10010110	226	150	96	û
10010111	227	151	97	ù
10011000	230	152	98	ÿ
10011001	231	153	99	Ö
10011010	232	154	9A	Ü
10011011	233	155	9B	¢
10011100	234	156	9C	£
10011101	235	157	9D	¥
10011110	236	158	9E	₧
10011111	237	159	9F	ƒ
10100000	240	160	A0	á
10100001	241	161	A1	í
10100010	242	162	A2	ó
10100011	243	163	A3	ú
10100100	244	164	A4	ñ
10100101	245	165	A5	Ñ
10100110	246	166	A6	ª
10100111	247	167	A7	º
10101000	250	168	A8	¿
10101001	251	169	A9	⌐
10101010	252	170	AA	¬
10101011	253	171	AB	½
10101100	254	172	AC	¼
10101101	255	173	AD	¡
10101110	256	174	AE	«
10101111	257	175	AF	»
10110000	260	176	B0	░
10110001	261	177	B1	▒
10110010	262	178	B2	▓
10110011	263	179	B3	│
10110100	264	180	B4	┤
10110101	265	181	B5	╡
10110110	266	182	B6	╢
10110111	267	183	B7	╖
10111000	270	184	B8	╕
10111001	271	185	B9	╣
10111010	272	186	BA	║
10111011	273	187	BB	╗
10111100	274	188	BC	╝
10111101	275	189	BD	╜
10111110	276	190	BE	╛
10111111	277	191	BF	┐
11000000	300	192	C0	└
11000001	301	193	C1	┴
11000010	302	194	C2	┬
11000011	303	195	C3	├
11000100	304	196	C4	─
11000101	305	197	C5	┼
11000110	306	198	C6	╞
11000111	307	199	C7	╟
11001000	310	200	C8	╚
11001001	311	201	C9	╔
11001010	312	202	CA	╩
11001011	313	203	CB	╦
11001100	314	204	CC	╠
11001101	315	205	CD	═
11001110	316	206	CE	╬
11001111	317	207	CF	╧
11010000	320	208	D0	╨
11010001	321	209	D1	╤
11010010	322	210	D2	╥
11010011	323	211	D3	╙
11010100	324	212	D4	╘
11010101	325	213	D5	╒
11010110	326	214	D6	╓
11010111	327	215	D7	╫
11011000	330	216	D8	╪
11011001	331	217	D9	┘
11011010	332	218	DA	┌
11011011	333	219	DB	█
11011100	334	220	DC	▄
11011101	335	221	DD	▌
11011110	336	222	DE	▐
11011111	337	223	DF	▀
11100000	340	224	E0	α
11100001	341	225	E1	ß
11100010	342	226	E2	Γ
11100011	343	227	E3	π
11100100	344	228	E4	Σ
11100101	345	229	E5	σ
11100110	346	230	E6	µ
11100111	347	231	E7	τ
11101000	350	232	E8	Φ
11101001	351	233	E9	Θ
11101010	352	234	EA	Ω
11101011	353	235	EB	δ
11101100	354	236	EC	∞
11101101	355	237	ED	φ
11101110	356	238	EE	ε
11101111	357	239	EF	∩
11110000	360	240	F0	≡
11110001	361	241	F1	±
11110010	362	242	F2	≥
11110011	363	243	F3	≤
11110100	364	244	F4	⌠
11110101	365	245	F5	⌡
11110110	366	246	F6	÷
11110111	367	247	F7	≈
11111000	370	248	F8	°
11111001	371	249	F9	∙
11111010	372	250	FA	·
11111011	373	251	FB	√
11111100	374	252	FC	ⁿ
11111101	375	253	FD	²
11111110	376	254	FE	■
11111111	377	255	FF