HTML ASCII Reference Manual

ASCII character sets are used to transmit information between different computers on the Internet.

ASCII character set

ASCII, whose full name is "U.S. Information Exchange Standard Code." Designed in the early 1960s, it is a standard character set for computers and hardware devices such as printers and tape drives.

ASCII is a 7-bit character set that contains 128 different character values.

ASCII supports 0-9 numbers, A-Z capital and lowercase Letters, and some special characters.

Character sets that are widely used on modern computers, HTML, and the Internet are based on ASCII.

The following table lists 128 ASCII characters and the corresponding HTML entity encoding.

ASCII printable characters

Character	Number	Describe
	32	Space
!	33	exclamation mark
"	34	quotation mark
#	35	number sign
$	36	dollar sign
%	37	percent sign
&	38	ampersand
'	39	apostrophe
(	40	left parenthesis
)	41	right parenthesis
*	42	asterisk
+	43	plus sign
,	44	comma
-	45	hyphen
.	46	period
/	47	slash
0	48	digit 0
1	49	digit 1
2	50	digit 2
3	51	digit 3
4	52	digit 4
5	53	digit 5
6	54	digit 6
7	55	digit 7
8	56	digit 8
9	57	digit 9
:	58	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

The ASCII device controls the characters

ASCII device control characters were originally designed to control hardware devices such as printers and tape drives.

The code doesn't work in HTML documentation.

character	serial number	describe
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)

HTML ASCII Reference Manual

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