🎓 Computer Science • Computer Science Calculators 100% Client-Side Privacy

Searchable ASCII Table (0 to 127)

Searchable, filterable 7-bit ASCII table displaying decimal, hex, octal, binary, glyph, and description.

Standard 7-Bit ASCII Table (0 to 127)

American Standard Code for Information Interchange

Dec	Hex	Oct	Binary	Char / Name	Description
0	0x00	000	00000000	NUL	Null character / String terminator
1	0x01	001	00000001	SOH	Start of Heading
2	0x02	002	00000010	STX	Start of Text
3	0x03	003	00000011	ETX	End of Text
4	0x04	004	00000100	EOT	End of Transmission
5	0x05	005	00000101	ENQ	Enquiry
6	0x06	006	00000110	ACK	Acknowledge
7	0x07	007	00000111	BEL	Bell / Audible Alert
8	0x08	010	00001000	BS	Backspace
9	0x09	011	00001001	HT	Horizontal Tab (\t)
10	0x0A	012	00001010	LF	Line Feed / New Line (\n)
11	0x0B	013	00001011	VT	Vertical Tab
12	0x0C	014	00001100	FF	Form Feed / Page Break
13	0x0D	015	00001101	CR	Carriage Return (\r)
14	0x0E	016	00001110	SO	Shift Out
15	0x0F	017	00001111	SI	Shift In
16	0x10	020	00010000	DLE	Data Link Escape
17	0x11	021	00010001	DC1	Device Control 1 (XON)
18	0x12	022	00010010	DC2	Device Control 2
19	0x13	023	00010011	DC3	Device Control 3 (XOFF)
20	0x14	024	00010100	DC4	Device Control 4
21	0x15	025	00010101	NAK	Negative Acknowledge
22	0x16	026	00010110	SYN	Synchronous Idle
23	0x17	027	00010111	ETB	End of Transmission Block
24	0x18	030	00011000	CAN	Cancel
25	0x19	031	00011001	EM	End of Medium
26	0x1A	032	00011010	SUB	Substitute
27	0x1B	033	00011011	ESC	Escape
28	0x1C	034	00011100	FS	File Separator
29	0x1D	035	00011101	GS	Group Separator
30	0x1E	036	00011110	RS	Record Separator
31	0x1F	037	00011111	US	Unit Separator
32	0x20	040	00100000		Space character
33	0x21	041	00100001	!	Punctuation / Symbol
34	0x22	042	00100010	"	Punctuation / Symbol
35	0x23	043	00100011	#	Punctuation / Symbol
36	0x24	044	00100100	$	Punctuation / Symbol
37	0x25	045	00100101	%	Punctuation / Symbol
38	0x26	046	00100110	&	Punctuation / Symbol
39	0x27	047	00100111	'	Punctuation / Symbol
40	0x28	050	00101000	(	Punctuation / Symbol
41	0x29	051	00101001	)	Punctuation / Symbol
42	0x2A	052	00101010	*	Punctuation / Symbol
43	0x2B	053	00101011	+	Punctuation / Symbol
44	0x2C	054	00101100	,	Punctuation / Symbol
45	0x2D	055	00101101	-	Punctuation / Symbol
46	0x2E	056	00101110	.	Punctuation / Symbol
47	0x2F	057	00101111	/	Punctuation / Symbol
48	0x30	060	00110000	0	Numeric digit
49	0x31	061	00110001	1	Numeric digit
50	0x32	062	00110010	2	Numeric digit
51	0x33	063	00110011	3	Numeric digit
52	0x34	064	00110100	4	Numeric digit
53	0x35	065	00110101	5	Numeric digit
54	0x36	066	00110110	6	Numeric digit
55	0x37	067	00110111	7	Numeric digit
56	0x38	070	00111000	8	Numeric digit
57	0x39	071	00111001	9	Numeric digit
58	0x3A	072	00111010	:	Punctuation / Symbol
59	0x3B	073	00111011	;	Punctuation / Symbol
60	0x3C	074	00111100	<	Punctuation / Symbol
61	0x3D	075	00111101	=	Punctuation / Symbol
62	0x3E	076	00111110	>	Punctuation / Symbol
63	0x3F	077	00111111	?	Punctuation / Symbol
64	0x40	100	01000000	@	Punctuation / Symbol
65	0x41	101	01000001	A	Uppercase Latin
66	0x42	102	01000010	B	Uppercase Latin
67	0x43	103	01000011	C	Uppercase Latin
68	0x44	104	01000100	D	Uppercase Latin
69	0x45	105	01000101	E	Uppercase Latin
70	0x46	106	01000110	F	Uppercase Latin
71	0x47	107	01000111	G	Uppercase Latin
72	0x48	110	01001000	H	Uppercase Latin
73	0x49	111	01001001	I	Uppercase Latin
74	0x4A	112	01001010	J	Uppercase Latin
75	0x4B	113	01001011	K	Uppercase Latin
76	0x4C	114	01001100	L	Uppercase Latin
77	0x4D	115	01001101	M	Uppercase Latin
78	0x4E	116	01001110	N	Uppercase Latin
79	0x4F	117	01001111	O	Uppercase Latin
80	0x50	120	01010000	P	Uppercase Latin
81	0x51	121	01010001	Q	Uppercase Latin
82	0x52	122	01010010	R	Uppercase Latin
83	0x53	123	01010011	S	Uppercase Latin
84	0x54	124	01010100	T	Uppercase Latin
85	0x55	125	01010101	U	Uppercase Latin
86	0x56	126	01010110	V	Uppercase Latin
87	0x57	127	01010111	W	Uppercase Latin
88	0x58	130	01011000	X	Uppercase Latin
89	0x59	131	01011001	Y	Uppercase Latin
90	0x5A	132	01011010	Z	Uppercase Latin
91	0x5B	133	01011011	[	Punctuation / Symbol
92	0x5C	134	01011100	\	Punctuation / Symbol
93	0x5D	135	01011101	]	Punctuation / Symbol
94	0x5E	136	01011110	^	Punctuation / Symbol
95	0x5F	137	01011111	_	Punctuation / Symbol
96	0x60	140	01100000	`	Punctuation / Symbol
97	0x61	141	01100001	a	Lowercase Latin
98	0x62	142	01100010	b	Lowercase Latin
99	0x63	143	01100011	c	Lowercase Latin
100	0x64	144	01100100	d	Lowercase Latin
101	0x65	145	01100101	e	Lowercase Latin
102	0x66	146	01100110	f	Lowercase Latin
103	0x67	147	01100111	g	Lowercase Latin
104	0x68	150	01101000	h	Lowercase Latin
105	0x69	151	01101001	i	Lowercase Latin
106	0x6A	152	01101010	j	Lowercase Latin
107	0x6B	153	01101011	k	Lowercase Latin
108	0x6C	154	01101100	l	Lowercase Latin
109	0x6D	155	01101101	m	Lowercase Latin
110	0x6E	156	01101110	n	Lowercase Latin
111	0x6F	157	01101111	o	Lowercase Latin
112	0x70	160	01110000	p	Lowercase Latin
113	0x71	161	01110001	q	Lowercase Latin
114	0x72	162	01110010	r	Lowercase Latin
115	0x73	163	01110011	s	Lowercase Latin
116	0x74	164	01110100	t	Lowercase Latin
117	0x75	165	01110101	u	Lowercase Latin
118	0x76	166	01110110	v	Lowercase Latin
119	0x77	167	01110111	w	Lowercase Latin
120	0x78	170	01111000	x	Lowercase Latin
121	0x79	171	01111001	y	Lowercase Latin
122	0x7A	172	01111010	z	Lowercase Latin
123	0x7B	173	01111011	{	Punctuation / Symbol
124	0x7C	174	01111100	\|	Punctuation / Symbol
125	0x7D	175	01111101	}	Punctuation / Symbol
126	0x7E	176	01111110	~	Punctuation / Symbol
127	0x7F	177	01111111	DEL	Delete

What is the ASCII Table?

The ASCII table is the complete directory of the 128 standard character codes, including 33 non-printable control characters and 95 printable characters.

Formula & Step-by-Step Calculation

Codes 0–31: Control Characters; Codes 32–126: Printable Characters; Code 127: DEL

Standard ASCII character map.

Worked Step-by-Step Examples

Example 1

What is the ASCII code for lowercase 'a'?

Solution: Decimal 97, Hex 0x61, Binary 01100001

• Lowercase letters start at 97 ('a') to 122 ('z')

Common Real-World & Academic Use Cases

✓ Software development character code lookups
✓ Regular expression character class ranges ([0-9], [A-Z])
✓ Embedded microcontroller terminal displays

How to Use the Searchable ASCII Table (0 to 127)

Filter Search

Type decimal, hex, or character in the search box.

Inspect Details

View full base conversions and control code definitions.

Frequently Asked Questions

Q: What is the difference between Extended ASCII and standard ASCII?

Standard ASCII uses 7 bits (128 characters); Extended ASCII uses 8 bits (256 characters) to include European accented letters and symbols.

Related Computer Science Calculators

🔗 Cs Ascii Converter → 🔗 Cs Unicode Converter →