ASCII, the acronym for the "American Standard Code for Information Interchange" is the first character-encoding scheme used between computers on the Internet.

Modern character encoding schemes like UTF-8 and ISO-8859 are built on ASCII.

The ASCII Character Set

ASCII Character Set was designed in the '60s, as a standard character set for computers and hardware devices, such as printers and tape drives.

Originally ASCII is based on the English alphabet, and it's a 7-bit character set containing 128 characters: the numbers 0-9, uppercase and lowercase English letters from A to Z, some basic punctuation symbols and some special characters.

The character sets used in modern computers, HTML, and Internet are all based on ASCII.

Below, you can find table lists that contain 128 ASCII characters and their equivalent HTML entity codes

ASCII Printable Characters

ASCII Character HTML Entity Code Description
    space
! ! exclamation mark
" " quotation mark
# # number sign
$ $ dollar sign
% % percent sign
& & ampersand
' ' apostrophe
( ( left parenthesis
) ) right parenthesis
* * asterisk
+ + plus sign
, , comma
- - hyphen
. . period
/ / slash
0 0 digit 0
1 1 digit 1
2 2 digit 2
3 3 digit 3
4 4 digit 4
5 5 digit 5
6 6 digit 6
7 7 digit 7
8 8 digit 8
9 9 digit 9
: : colon
; &#59; semicolon
< &#60; less-than
= &#61; equals-to
> &#62; greater-than
? &#63; question mark
@ &#64; at sign
A &#65; uppercase A
B &#66; uppercase B
C &#67; uppercase C
D &#68; uppercase D
E &#69; uppercase E
F &#70; uppercase F
G &#71; uppercase G
H &#72; uppercase H
I &#73; uppercase I
J &#74; uppercase J
K &#75; uppercase K
L &#76; uppercase L
M &#77; uppercase M
N &#78; uppercase N
O &#79; uppercase O
P &#80; uppercase P
Q &#81; uppercase Q
R &#82; uppercase R
S &#83; uppercase S
T &#84; uppercase T
U &#85; uppercase U
V &#86; uppercase V
W &#87; uppercase W
X &#88; uppercase X
Y &#89; uppercase Y
Z &#90; uppercase Z
[ &#91; left square bracket
\ &#92; backslash
] &#93; right square bracket
^ &#94; caret
_ &#95; underscore
` &#96; grave accent
a &#97; lowercase a
b &#98; lowercase b
c &#99; lowercase c
d &#100; lowercase d
e &#101; lowercase e
f &#102; lowercase f
g &#103; lowercase g
h &#104; lowercase h
i &#105; lowercase i
j &#106; lowercase j
k &#107; lowercase k
l &#108; lowercase l
m &#109; lowercase m
n &#110; lowercase n
o &#111; lowercase o
p &#112; lowercase p
q &#113; lowercase q
r &#114; lowercase r
s &#115; lowercase s
t &#116; lowercase t
u &#117; lowercase u
v &#118; lowercase v
w &#119; lowercase w
x &#120; lowercase x
y &#121; lowercase y
z &#122; lowercase z
{ &#123; left curly brace
| &#124; vertical bar
} &#125; right curly brace
~ &#126; tilde

ASCII Device Control Characters

The ASCII device control characters (except horizontal tab, line feed, and carriage return) have nothing to do inside an HTML document. Originally ASCII control characters (range 00-31, plus 127) were designed to control hardware devices.

ASCII Character HTML Entity Code Description
NUL &#00; null character
SOH &#01; start of header
STX &#02; start of text
ETX &#03; end of text
EOT &#04; end of transmission
ENQ &#05; enquiry
ACK &#06; acknowledge
BEL &#07; bell (ring)
BS &#08; backspace
HT &#09; horizontal tab
LF &#10; line feed
VT &#11; vertical tab
FF &#12; form feed
CR &#13; carriage return
SO &#14; shift out
SI &#15; shift in
DLE &#16; data link escape
DC1 &#17; device control 1
DC2 &#18; device control 2
DC3 &#19; device control 3
DC4 &#20; device control 4
NAK &#21; negative acknowledge
SYN &#22; synchronize
ETB &#23; end transmission block
CAN &#24; cancel
EM &#25; end of medium
SUB &#26; substitute
ESC &#27; escape
FS &#28; file separator
GS &#29; group separator
RS &#30; record separator
US &#31; unit separator
DEL &#127; delete (rubout)

Practice Your Knowledge

What are the uses of ASCII in HTML?

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