W3cubDocs

ASCII Chart

The following chart contains all 128 ASCII decimal (dec), octal (oct), hexadecimal (hex) and character (ch) codes.

`dec`	`oct`	`hex`	`ch`	`dec`	`oct`	`hex`	`ch`	`dec`	`oct`	`hex`	`ch`	`dec`	`oct`	`hex`	`ch`
`0`	`0`	`00`	`NUL` (null)	`32`	`40`	`20`	(space)	`64`	`100`	`40`	`@`	`96`	`140`	`60`	`
`1`	`1`	`01`	`SOH` (start of header)	`33`	`41`	`21`	`!`	`65`	`101`	`41`	`A`	`97`	`141`	`61`	`a`
`2`	`2`	`02`	`STX` (start of text)	`34`	`42`	`22`	`"`	`66`	`102`	`42`	`B`	`98`	`142`	`62`	`b`
`3`	`3`	`03`	`ETX` (end of text)	`35`	`43`	`23`	`#`	`67`	`103`	`43`	`C`	`99`	`143`	`63`	`c`
`4`	`4`	`04`	`EOT` (end of transmission)	`36`	`44`	`24`	`$`	`68`	`104`	`44`	`D`	`100`	`144`	`64`	`d`
`5`	`5`	`05`	`ENQ` (enquiry)	`37`	`45`	`25`	`%`	`69`	`105`	`45`	`E`	`101`	`145`	`65`	`e`
`6`	`6`	`06`	`ACK` (acknowledge)	`38`	`46`	`26`	`&`	`70`	`106`	`46`	`F`	`102`	`146`	`66`	`f`
`7`	`7`	`07`	`BEL` (bell)	`39`	`47`	`27`	`'`	`71`	`107`	`47`	`G`	`103`	`147`	`67`	`g`
`8`	`10`	`08`	`BS` (backspace)	`40`	`50`	`28`	`(`	`72`	`110`	`48`	`H`	`104`	`150`	`68`	`h`
`9`	`11`	`09`	`HT` (horizontal tab)	`41`	`51`	`29`	`)`	`73`	`111`	`49`	`I`	`105`	`151`	`69`	`i`
`10`	`12`	`0a`	`LF` (line feed - new line)	`42`	`52`	`2a`	`*`	`74`	`112`	`4a`	`J`	`106`	`152`	`6a`	`j`
`11`	`13`	`0b`	`VT` (vertical tab)	`43`	`53`	`2b`	`+`	`75`	`113`	`4b`	`K`	`107`	`153`	`6b`	`k`
`12`	`14`	`0c`	`FF` (form feed - new page)	`44`	`54`	`2c`	`,`	`76`	`114`	`4c`	`L`	`108`	`154`	`6c`	`l`
`13`	`15`	`0d`	`CR` (carriage return)	`45`	`55`	`2d`	`-`	`77`	`115`	`4d`	`M`	`109`	`155`	`6d`	`m`
`14`	`16`	`0e`	`SO` (shift out)	`46`	`56`	`2e`	`.`	`78`	`116`	`4e`	`N`	`110`	`156`	`6e`	`n`
`15`	`17`	`0f`	`SI` (shift in)	`47`	`57`	`2f`	`/`	`79`	`117`	`4f`	`O`	`111`	`157`	`6f`	`o`
`16`	`20`	`10`	`DLE` (data link escape)	`48`	`60`	`30`	`0`	`80`	`120`	`50`	`P`	`112`	`160`	`70`	`p`
`17`	`21`	`11`	`DC1` (device control 1)	`49`	`61`	`31`	`1`	`81`	`121`	`51`	`Q`	`113`	`161`	`71`	`q`
`18`	`22`	`12`	`DC2` (device control 2)	`50`	`62`	`32`	`2`	`82`	`122`	`52`	`R`	`114`	`162`	`72`	`r`
`19`	`23`	`13`	`DC3` (device control 3)	`51`	`63`	`33`	`3`	`83`	`123`	`53`	`S`	`115`	`163`	`73`	`s`
`20`	`24`	`14`	`DC4` (device control 4)	`52`	`64`	`34`	`4`	`84`	`124`	`54`	`T`	`116`	`164`	`74`	`t`
`21`	`25`	`15`	`NAK` (negative acknowledge)	`53`	`65`	`35`	`5`	`85`	`125`	`55`	`U`	`117`	`165`	`75`	`u`
`22`	`26`	`16`	`SYN` (synchronous idle)	`54`	`66`	`36`	`6`	`86`	`126`	`56`	`V`	`118`	`166`	`76`	`v`
`23`	`27`	`17`	`ETB` (end of transmission block)	`55`	`67`	`37`	`7`	`87`	`127`	`57`	`W`	`119`	`167`	`77`	`w`
`24`	`30`	`18`	`CAN` (cancel)	`56`	`70`	`38`	`8`	`88`	`130`	`58`	`X`	`120`	`170`	`78`	`x`
`25`	`31`	`19`	`EM` (end of medium)	`57`	`71`	`39`	`9`	`89`	`131`	`59`	`Y`	`121`	`171`	`79`	`y`
`26`	`32`	`1a`	`SUB` (substitute)	`58`	`72`	`3a`	`:`	`90`	`132`	`5a`	`Z`	`122`	`172`	`7a`	`z`
`27`	`33`	`1b`	`ESC` (escape)	`59`	`73`	`3b`	`;`	`91`	`133`	`5b`	`[`	`123`	`173`	`7b`	`{`
`28`	`34`	`1c`	`FS` (file separator)	`60`	`74`	`3c`	`<`	`92`	`134`	`5c`	`\`	`124`	`174`	`7c`	`\|`
`29`	`35`	`1d`	`GS` (group separator)	`61`	`75`	`3d`	`=`	`93`	`135`	`5d`	`]`	`125`	`175`	`7d`	`}`
`30`	`36`	`1e`	`RS` (record separator)	`62`	`76`	`3e`	`>`	`94`	`136`	`5e`	`^`	`126`	`176`	`7e`	`~`
`31`	`37`	`1f`	`US` (unit separator)	`63`	`77`	`3f`	`?`	`95`	`137`	`5f`	`_`	`127`	`177`	`7f`	`DEL` (delete)

Note: in Unicode, the ASCII character block is known as U+0000..U+007F Basic Latin.

Example

#include <stdio.h>
 
int main(void)
{
    puts("Printable ASCII:");
    for (int i = 32; i < 127; ++i) {
        putchar(i);
        putchar(i % 16 == 15 ? '\n' : ' ');
    }
}

Possible output:

Printable ASCII:
  ! " # $ % & ' ( ) * + , - . /
0 1 2 3 4 5 6 7 8 9 : ; < = > ?
@ A B C D E F G H I J K L M N O
P Q R S T U V W X Y Z [ \ ] ^ _
` a b c d e f g h i j k l m n o
p q r s t u v w x y z { | } ~

ASCII Chart

Example

See also