ASCII Table

Find any standard ASCII value from 0 to 127, compare four number bases, and copy safe visible table rows.

Standard ASCII 0–127

128 entries.

All 128 standard 7-bit ASCII codes. Binary is shown as an 8-bit byte view with a leading zero.
Decimal	Hex	Octal	Binary (8-bit byte view)	Character	Name
0	`0x00`	`0o000`	`00000000`	`[NUL]`	NULL
1	`0x01`	`0o001`	`00000001`	`[SOH]`	START OF HEADING
2	`0x02`	`0o002`	`00000010`	`[STX]`	START OF TEXT
3	`0x03`	`0o003`	`00000011`	`[ETX]`	END OF TEXT
4	`0x04`	`0o004`	`00000100`	`[EOT]`	END OF TRANSMISSION
5	`0x05`	`0o005`	`00000101`	`[ENQ]`	ENQUIRY
6	`0x06`	`0o006`	`00000110`	`[ACK]`	ACKNOWLEDGE
7	`0x07`	`0o007`	`00000111`	`[BEL]`	BELL
8	`0x08`	`0o010`	`00001000`	`[BS]`	BACKSPACE
9	`0x09`	`0o011`	`00001001`	`[HT]`	HORIZONTAL TABULATION
10	`0x0A`	`0o012`	`00001010`	`[LF]`	LINE FEED
11	`0x0B`	`0o013`	`00001011`	`[VT]`	VERTICAL TABULATION
12	`0x0C`	`0o014`	`00001100`	`[FF]`	FORM FEED
13	`0x0D`	`0o015`	`00001101`	`[CR]`	CARRIAGE RETURN
14	`0x0E`	`0o016`	`00001110`	`[SO]`	SHIFT OUT
15	`0x0F`	`0o017`	`00001111`	`[SI]`	SHIFT IN
16	`0x10`	`0o020`	`00010000`	`[DLE]`	DATA LINK ESCAPE
17	`0x11`	`0o021`	`00010001`	`[DC1]`	DEVICE CONTROL 1
18	`0x12`	`0o022`	`00010010`	`[DC2]`	DEVICE CONTROL 2
19	`0x13`	`0o023`	`00010011`	`[DC3]`	DEVICE CONTROL 3
20	`0x14`	`0o024`	`00010100`	`[DC4]`	DEVICE CONTROL 4
21	`0x15`	`0o025`	`00010101`	`[NAK]`	NEGATIVE ACKNOWLEDGE
22	`0x16`	`0o026`	`00010110`	`[SYN]`	SYNCHRONOUS IDLE
23	`0x17`	`0o027`	`00010111`	`[ETB]`	END OF TRANSMISSION BLOCK
24	`0x18`	`0o030`	`00011000`	`[CAN]`	CANCEL
25	`0x19`	`0o031`	`00011001`	`[EM]`	END OF MEDIUM
26	`0x1A`	`0o032`	`00011010`	`[SUB]`	SUBSTITUTE
27	`0x1B`	`0o033`	`00011011`	`[ESC]`	ESCAPE
28	`0x1C`	`0o034`	`00011100`	`[FS]`	FILE SEPARATOR
29	`0x1D`	`0o035`	`00011101`	`[GS]`	GROUP SEPARATOR
30	`0x1E`	`0o036`	`00011110`	`[RS]`	RECORD SEPARATOR
31	`0x1F`	`0o037`	`00011111`	`[US]`	UNIT SEPARATOR
32	`0x20`	`0o040`	`00100000`	`[SP]`	SPACE
33	`0x21`	`0o041`	`00100001`	`!`	EXCLAMATION MARK
34	`0x22`	`0o042`	`00100010`	`"`	QUOTATION MARK
35	`0x23`	`0o043`	`00100011`	`#`	NUMBER SIGN
36	`0x24`	`0o044`	`00100100`	`$`	DOLLAR SIGN
37	`0x25`	`0o045`	`00100101`	`%`	PERCENT SIGN
38	`0x26`	`0o046`	`00100110`	`&`	AMPERSAND
39	`0x27`	`0o047`	`00100111`	`'`	APOSTROPHE
40	`0x28`	`0o050`	`00101000`	`(`	LEFT PARENTHESIS
41	`0x29`	`0o051`	`00101001`	`)`	RIGHT PARENTHESIS
42	`0x2A`	`0o052`	`00101010`	`*`	ASTERISK
43	`0x2B`	`0o053`	`00101011`	`+`	PLUS SIGN
44	`0x2C`	`0o054`	`00101100`	`,`	COMMA
45	`0x2D`	`0o055`	`00101101`	`-`	HYPHEN-MINUS
46	`0x2E`	`0o056`	`00101110`	`.`	FULL STOP
47	`0x2F`	`0o057`	`00101111`	`/`	SOLIDUS
48	`0x30`	`0o060`	`00110000`	`0`	DIGIT ZERO
49	`0x31`	`0o061`	`00110001`	`1`	DIGIT ONE
50	`0x32`	`0o062`	`00110010`	`2`	DIGIT TWO
51	`0x33`	`0o063`	`00110011`	`3`	DIGIT THREE
52	`0x34`	`0o064`	`00110100`	`4`	DIGIT FOUR
53	`0x35`	`0o065`	`00110101`	`5`	DIGIT FIVE
54	`0x36`	`0o066`	`00110110`	`6`	DIGIT SIX
55	`0x37`	`0o067`	`00110111`	`7`	DIGIT SEVEN
56	`0x38`	`0o070`	`00111000`	`8`	DIGIT EIGHT
57	`0x39`	`0o071`	`00111001`	`9`	DIGIT NINE
58	`0x3A`	`0o072`	`00111010`	`:`	COLON
59	`0x3B`	`0o073`	`00111011`	`;`	SEMICOLON
60	`0x3C`	`0o074`	`00111100`	`<`	LESS-THAN SIGN
61	`0x3D`	`0o075`	`00111101`	`=`	EQUALS SIGN
62	`0x3E`	`0o076`	`00111110`	`>`	GREATER-THAN SIGN
63	`0x3F`	`0o077`	`00111111`	`?`	QUESTION MARK
64	`0x40`	`0o100`	`01000000`	`@`	COMMERCIAL AT
65	`0x41`	`0o101`	`01000001`	`A`	LATIN CAPITAL LETTER A
66	`0x42`	`0o102`	`01000010`	`B`	LATIN CAPITAL LETTER B
67	`0x43`	`0o103`	`01000011`	`C`	LATIN CAPITAL LETTER C
68	`0x44`	`0o104`	`01000100`	`D`	LATIN CAPITAL LETTER D
69	`0x45`	`0o105`	`01000101`	`E`	LATIN CAPITAL LETTER E
70	`0x46`	`0o106`	`01000110`	`F`	LATIN CAPITAL LETTER F
71	`0x47`	`0o107`	`01000111`	`G`	LATIN CAPITAL LETTER G
72	`0x48`	`0o110`	`01001000`	`H`	LATIN CAPITAL LETTER H
73	`0x49`	`0o111`	`01001001`	`I`	LATIN CAPITAL LETTER I
74	`0x4A`	`0o112`	`01001010`	`J`	LATIN CAPITAL LETTER J
75	`0x4B`	`0o113`	`01001011`	`K`	LATIN CAPITAL LETTER K
76	`0x4C`	`0o114`	`01001100`	`L`	LATIN CAPITAL LETTER L
77	`0x4D`	`0o115`	`01001101`	`M`	LATIN CAPITAL LETTER M
78	`0x4E`	`0o116`	`01001110`	`N`	LATIN CAPITAL LETTER N
79	`0x4F`	`0o117`	`01001111`	`O`	LATIN CAPITAL LETTER O
80	`0x50`	`0o120`	`01010000`	`P`	LATIN CAPITAL LETTER P
81	`0x51`	`0o121`	`01010001`	`Q`	LATIN CAPITAL LETTER Q
82	`0x52`	`0o122`	`01010010`	`R`	LATIN CAPITAL LETTER R
83	`0x53`	`0o123`	`01010011`	`S`	LATIN CAPITAL LETTER S
84	`0x54`	`0o124`	`01010100`	`T`	LATIN CAPITAL LETTER T
85	`0x55`	`0o125`	`01010101`	`U`	LATIN CAPITAL LETTER U
86	`0x56`	`0o126`	`01010110`	`V`	LATIN CAPITAL LETTER V
87	`0x57`	`0o127`	`01010111`	`W`	LATIN CAPITAL LETTER W
88	`0x58`	`0o130`	`01011000`	`X`	LATIN CAPITAL LETTER X
89	`0x59`	`0o131`	`01011001`	`Y`	LATIN CAPITAL LETTER Y
90	`0x5A`	`0o132`	`01011010`	`Z`	LATIN CAPITAL LETTER Z
91	`0x5B`	`0o133`	`01011011`	`[`	LEFT SQUARE BRACKET
92	`0x5C`	`0o134`	`01011100`	`\`	REVERSE SOLIDUS
93	`0x5D`	`0o135`	`01011101`	`]`	RIGHT SQUARE BRACKET
94	`0x5E`	`0o136`	`01011110`	`^`	CIRCUMFLEX ACCENT
95	`0x5F`	`0o137`	`01011111`	`_`	LOW LINE
96	`0x60`	`0o140`	`01100000`	`	GRAVE ACCENT
97	`0x61`	`0o141`	`01100001`	`a`	LATIN SMALL LETTER A
98	`0x62`	`0o142`	`01100010`	`b`	LATIN SMALL LETTER B
99	`0x63`	`0o143`	`01100011`	`c`	LATIN SMALL LETTER C
100	`0x64`	`0o144`	`01100100`	`d`	LATIN SMALL LETTER D
101	`0x65`	`0o145`	`01100101`	`e`	LATIN SMALL LETTER E
102	`0x66`	`0o146`	`01100110`	`f`	LATIN SMALL LETTER F
103	`0x67`	`0o147`	`01100111`	`g`	LATIN SMALL LETTER G
104	`0x68`	`0o150`	`01101000`	`h`	LATIN SMALL LETTER H
105	`0x69`	`0o151`	`01101001`	`i`	LATIN SMALL LETTER I
106	`0x6A`	`0o152`	`01101010`	`j`	LATIN SMALL LETTER J
107	`0x6B`	`0o153`	`01101011`	`k`	LATIN SMALL LETTER K
108	`0x6C`	`0o154`	`01101100`	`l`	LATIN SMALL LETTER L
109	`0x6D`	`0o155`	`01101101`	`m`	LATIN SMALL LETTER M
110	`0x6E`	`0o156`	`01101110`	`n`	LATIN SMALL LETTER N
111	`0x6F`	`0o157`	`01101111`	`o`	LATIN SMALL LETTER O
112	`0x70`	`0o160`	`01110000`	`p`	LATIN SMALL LETTER P
113	`0x71`	`0o161`	`01110001`	`q`	LATIN SMALL LETTER Q
114	`0x72`	`0o162`	`01110010`	`r`	LATIN SMALL LETTER R
115	`0x73`	`0o163`	`01110011`	`s`	LATIN SMALL LETTER S
116	`0x74`	`0o164`	`01110100`	`t`	LATIN SMALL LETTER T
117	`0x75`	`0o165`	`01110101`	`u`	LATIN SMALL LETTER U
118	`0x76`	`0o166`	`01110110`	`v`	LATIN SMALL LETTER V
119	`0x77`	`0o167`	`01110111`	`w`	LATIN SMALL LETTER W
120	`0x78`	`0o170`	`01111000`	`x`	LATIN SMALL LETTER X
121	`0x79`	`0o171`	`01111001`	`y`	LATIN SMALL LETTER Y
122	`0x7A`	`0o172`	`01111010`	`z`	LATIN SMALL LETTER Z
123	`0x7B`	`0o173`	`01111011`	`{`	LEFT CURLY BRACKET
124	`0x7C`	`0o174`	`01111100`	`\|`	VERTICAL LINE
125	`0x7D`	`0o175`	`01111101`	`}`	RIGHT CURLY BRACKET
126	`0x7E`	`0o176`	`01111110`	`~`	TILDE
127	`0x7F`	`0o177`	`01111111`	`[DEL]`	DELETE

By Wei Chieh Liao. ASCII lookups and explicit table copies run in your browser.

Standard ASCII is a 7-bit code

ASCII assigns 128 values from decimal 0 through 127. The first 32 values are controls, 32 is SPACE, 33 through 126 are graphic characters, and 127 is DELETE. The table follows the control abbreviations and names in RFC 20, with graphic names pinned to Unicode 17.0.0.

Read the 8-bit byte view correctly

The Binary column pads each 7-bit ASCII value to eight positions because bytes are commonly displayed that way. Its high-order bit is always 0. For example, capital A is decimal 65, hex 0x41, octal 0o101, and the 8-bit byte view 01000001.

Search without cross-column surprises

Number forms are exact: 65, 0x41, 0o101, and 0b01000001 all select capital A. An exact abbreviation such as LF takes priority before a name search. Plain digits are decimal codes; find the graphic digit 0 with 0x30, 0o060, 0b00110000, or its formal name.

Copy controls as visible labels

A copied row contains decimal, hex, octal, the 8-bit byte view, character, and name as tab-separated plain text. Invisible control values use bracketed labels: line feed copies as [LF], SPACE as [SP], and DELETE as [DEL]. The page never places a raw C0 control or DELETE byte into copied fields.

Why extended ASCII is excluded

Values 128 through 255 do not belong to standard ASCII. CP437, Windows-1252, ISO-8859-1, and other encodings assign different characters to that range, so combining them under one “extended ASCII” label would hide the encoding choice. Use an encoding-specific reference when those bytes matter.

Private, fixed, and available without scripts

All 128 rows are part of the page before JavaScript runs. JavaScript only adds filtering and explicit clipboard actions. The dataset is fixed, makes no runtime source request, and sends no query, code, character, name, count, or copied payload to analytics.

Frequently asked questions

How many characters are in standard ASCII?

Standard ASCII has 128 code positions, numbered 0 through 127. It is a 7-bit coded character set: 32 positions are controls, 94 are visible graphic characters, one is SPACE, and one is DELETE.

Why does the binary column contain eight bits?

The table shows each 7-bit ASCII value in a common 8-bit byte view. The high-order bit is always 0, so decimal 65 appears as 01000001. This display does not redefine ASCII as an 8-bit standard.

Can I search by decimal, hexadecimal, octal, or binary?

Yes. Enter a decimal value from 0 to 127, or use 0x for hexadecimal, 0o for octal, or 0b for binary. You can also search by one printable character, a control abbreviation such as LF, or a name such as line feed.

What happens when I copy a control character?

Control rows copy a visible bracketed label such as [LF], never the raw invisible control byte. This makes pasted table rows inspectable and avoids unintended tabs, line breaks, or device-control effects.

Does this include extended ASCII?

No. Extended ASCII is not one standard: CP437, Windows-1252, ISO-8859-1, and other code pages assign different meanings above 127. This page stays within standard US-ASCII 0 through 127.

Is my search saved or sent anywhere?

No. Filtering and copying run in this browser tab. ToolNeko does not place the query, matching codes, names, result count, or copied text in URLs, storage, cookies, network requests, logs, or analytics.