HTML ASCIIReference Manual
ASCII is the first character set (encoding standard) used between computers on the Internet.
ISO-8859-1 (default in HTML 4.01) and UTF-8 (default in HTML5) are both built based on ASCII.
ASCII Character Set
ASCII stands for "American Standard Code for Information Interchange", which is the U.S. standard code for information interchange.
It was designed in the early 1960s as the standard character set for computers and electronic devices.
ASCII is a 7-bit character set containing 128 characters.
Supports digits 0-9, uppercase/lowercase English letters (a-z, A-Z), and some special characters.
The character sets used in modern computers, HTML, and the Internet are all based on ASCII.
The table below lists the 128 ASCII characters and their corresponding HTML entity codes.
ASCII Printable Characters
| Character | Number | Description |
|---|---|---|
| 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 sign |
| = | 61 | Equal sign |
| > | 62 | Greater-than sign |
| ? | 63 | Question mark |
| @ | 64 | At sign |
| A | 65 | Uppercase letter A |
| B | 66 | Uppercase letter B |
| C | 67 | Uppercase letter C |
| D | 68 | Uppercase letter D |
| E | 69 | Uppercase letter E |
| F | 70 | Uppercase letter F |
| G | 71 | Uppercase letter G |
| H | 72 | Uppercase letter H |
| I | 73 | Uppercase letter I |
| J | 74 | Uppercase letter J |
| K | 75 | Uppercase letter K |
| L | 76 | Uppercase letter L |
| M | 77 | Uppercase letter M |
| N | 78 | Uppercase letter N |
| O | 79 | Uppercase letter O |
| P | 80 | Uppercase letter P |
| Q | 81 | Uppercase letter Q |
| R | 82 | Uppercase letter R |
| S | 83 | Uppercase letter S |
| T | 84 | Uppercase letter T |
| U | 85 | Uppercase letter U |
| V | 86 | Uppercase letter V |
| W | 87 | Uppercase letter W |
| X | 88 | Uppercase letter X |
| Y | 89 | Uppercase letter Y |
| Z | 90 | Uppercase letter Z |
| [ | 91 | Left square bracket |
| \ | 92 | Backslash |
| ] | 93 | Right square bracket |
| ^ | 94 | caret |
| _ | 95 | underscore |
| ` | 96 | grave accent |
| a | 97 | lowercase letter a |
| b | 98 | lowercase letter b |
| c | 99 | lowercase letter c |
| d | 100 | lowercase letter d |
| e | 101 | lowercase letter e |
| f | 102 | lowercase letter f |
| g | 103 | lowercase letter g |
| h | 104 | lowercase letter h |
| i | 105 | lowercase letter i |
| j | 106 | lowercase letter j |
| k | 107 | lowercase letter k |
| l | 108 | lowercase letter l |
| m | 109 | lowercase letter m |
| n | 110 | lowercase letter n |
| o | 111 | lowercase letter o |
| p | 112 | lowercase letter p |
| q | 113 | lowercase letter q |
| r | 114 | lowercase letter r |
| s | 115 | lowercase letter s |
| t | 116 | lowercase letter t |
| u | 117 | lowercase letter u |
| v | 118 | lowercase letter v |
| w | 119 | lowercase letter w |
| x | 120 | lowercase letter x |
| y | 121 | lowercase letter y |
| z | 122 | lowercase letter z |
| { | 123 | left curly brace |
| | | 124 | vertical bar |
| } | 125 | right curly brace |
| ~ | 126 | tilde |
ASCII Device Control Characters
The ASCII control characters (00-31, plus 127) were originally designed to control hardware devices such as printers and tape drives.
Control characters (other than horizontal tab, line feed, and carriage return) have no effect in HTML documents.
| character | number | 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 |
| 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 |
ASCII and Hexadecimal Conversion Table
|
hexadecimal code |
MCS character or abbreviation |
DEC multinational character name |
|
ASCII control characters 1 |
||
|
00 |
NUL |
null character |
|
01 |
SOH |
Start of Heading (Ctrl/A) |
|
02 |
STX |
Start of Text (Ctrl/B) |
|
03 |
ETX |
End of Text (Ctrl/C) |
|
04 |
EOT |
End of Transmission (Ctrl/D) |
|
05 |
ENQ |
Enquiry (Ctrl/E) |
|
06 |
ACK |
Acknowledge (Ctrl/F) |
|
07 |
BEL |
Bell (Ctrl/G) |
|
08 |
BS |
Backspace (Ctrl/H) |
|
09 |
HT |
Horizontal Tab (Ctrl/I) |
|
0A |
LF |
Line Feed (Ctrl/J) |
|
0B |
VT |
Vertical Tab (Ctrl/K) |
|
0C |
FF |
Form Feed (Ctrl/L) |
|
0D |
CR |
Carriage Return (Ctrl/M) |
|
0E |
SO |
Shift Out (Ctrl/N) |
|
0F |
SI |
Shift In (Ctrl/O) |
|
10 |
DLE |
Data Link Escape (Ctrl/P) |
|
11 |
DC1 |
Device Control 1 (Ctrl/Q) |
|
12 |
DC2 |
Device Control 2 (Ctrl/R) |
|
13 |
DC3 |
Device Control 3 (Ctrl/S) |
|
14 |
DC4 |
Device Control 4 (Ctrl/T) |
|
15 |
NAK |
Negative Acknowledge (Ctrl/U) |
|
16 |
SYN |
Synchronous Idle (Ctrl/V) |
|
17 |
ETB |
End of Transmission Block (Ctrl/W) |
|
18 |
CAN |
Cancel (Ctrl/X) |
|
19 |
EM |
End of Medium (Ctrl/Y) |
|
1A |
SUB |
Substitute (Ctrl/Z) |
|
1B |
ESC |
Escape Character |
|
1C |
FS |
File Separator |
|
1D |
GS |
Group Separator |
|
1E |
RS |
Record Separator |
|
1F |
US |
Unit Separator |
|
ASCII Special and Digit Characters |
||
|
20 |
SP |
Space |
|
21 |
! |
Exclamation Point |
|
22 |
" |
Quotation Mark (Double Quote) |
|
23 |
# |
Number Sign |
|
24 |
$ |
Dollar Sign |
|
25 |
% |
Percent Sign |
|
26 |
& |
Ampersand |
|
27 |
" |
Apostrophe (Single Quote) |
|
28 |
( |
Left Parenthesis |
|
29 |
) |
Right Parenthesis |
|
2A |
* |
Asterisk |
|
2B |
|
Plus Sign |
|
2C |
, |
Comma |
|
2D |
-- |
Hyphen or Minus Sign |
|
2E |
. |
Period or Decimal Point |
|
2F |
/ |
Slash |
|
30 |
0 |
zero |
|
31 |
1 |
1 |
|
32 |
2 |
2 |
|
33 |
3 |
3 |
|
34 |
4 |
4 |
|
35 |
5 |
5 |
|
36 |
6 |
6 |
|
37 |
7 |
7 |
|
38 |
8 |
8 |
|
39 |
9 |
9 |
|
3A |
: |
Colon |
|
3B |
; |
Semicolon |
|
3C |
< |
Less Than |
|
3D |
= |
Equals Sign |
|
3E |
> |
Greater Than |
|
3F |
? |
Question Mark |
|
ASCII Letter Characters |
||
|
40 |
@ |
Commercial At Sign |
|
41 |
A |
Capital Letter A |
|
42 |
B |
Capital Letter B |
|
43 |
C |
Capital Letter C |
|
44 |
D |
Capital Letter D |
|
45 |
E |
Capital Letter E |
|
46 |
F |
Capital Letter F |
|
47 |
G |
Capital Letter G |
|
48 |
H |
Capital Letter H |
|
49 |
I |
Capital Letter I |
|
4A |
J |
Capital Letter J |
|
4B |
K |
Capital Letter K |
|
4C |
L |
Capital Letter L |
|
4D |
M |
Capital Letter M |
|
4E |
N |
Capital Letter N |
|
4F |
O |
Capital Letter O |
|
50 |
P |
Capital Letter P |
|
51 |
Q |
Capital Letter Q |
|
52 |
R |
Capital Letter R |
|
53 |
S |
Capital Letter S |
|
54 |
T |
Capital Letter T |
|
55 |
U |
Capital Letter U |
|
56 |
V |
Capital Letter V |
|
57 |
W |
Capital Letter W |
|
58 |
X |
Capital Letter X |
|
59 |
Y |
Capital Letter Y |
|
5A |
Z |
Capital Letter Z |
|
5B |
[ |
Left Square Bracket |
|
5C |
\ |
Backslash |
|
5D |
] |
Right Square Bracket |
|
5E |
^ |
Circumflex Accent |
|
5F |
_ |
Underscore |
|
60 |
` |
Grave Accent |
|
61 |
a |
Small Letter a |
|
62 |
b |
Small Letter b |
|
63 |
c |
Small Letter c |
|
64 |
d |
Small Letter d |
|
65 |
e |
Small Letter e |
|
66 |
f |
Small Letter f |
|
67 |
g |
Small Letter g |
|
68 |
h |
Small Letter h |
|
69 |
i |
Small Letter i |
|
6A |
j |
Small Letter j |
|
6B |
k |
Small Letter k |
|
6C |
l |
Small Letter l |
|
6D |
m |
Small Letter m |
|
6E |
n |
Small Letter n |
|
6F |
o |
Small Letter o |
|
70 |
p |
Small Letter p |
|
71 |
q |
Small Letter q |
|
72 |
r |
Small Letter r |
|
73 |
s |
Small Letter s |
|
74 |
t |
Small Letter t |
|
75 |
u |
Small Letter u |
|
76 |
v |
Small Letter v |
|
77 |
w |
Small Letter w |
|
78 |
x |
Small Letter x |
|
79 |
y |
Small Letter y |
|
7A |
z |
Small Letter z |
|
7B |
{ |
Left Curly Brace |
|
7C |
| |
Vertical Line |
|
7D |
} |
Right curly brace (ALTMODE) |
|
7E |
~ |
Tilde (ALTMODE) |
|
7F |
DEL |
Erase (DELETE) |
|
Control character |
||
|
80 |
|
[Reserved] |
|
81 |
|
[Reserved] |
|
82 |
|
[Reserved] |
|
83 |
|
[Reserved] |
|
84 |
IND |
Index |
|
85 |
NEL |
Next line |
|
86 |
SSA |
Start of selected area |
|
87 |
ESA |
End of selected area |
|
88 |
HTS |
Horizontal tabulation set |
|
89 |
HTJ |
Aligned horizontal tabulation set |
|
8A |
VTS |
Vertical tabulation set |
|
8B |
PLD |
Partial line down |
|
8C |
PLU |
Partial line up |
|
8D |
RI |
Reverse index |
|
8E |
SS2 |
Single shift 2 |
|
8F |
SS3 |
Single shift 3 |
|
90 |
DCS |
Device control string |
|
91 |
PU1 |
Private use 1 |
|
92 |
PU2 |
Private use 2 |
|
93 |
STS |
Set transmit state |
|
94 |
CCH |
Cancel character |
|
95 |
MW |
Message waiting |
|
96 |
SPA |
Start of protected area |
|
97 |
EPA |
End of protected area |
|
98 |
|
[Reserved] |
|
99 |
|
[Reserved] |
|
9A |
|
[Reserved] |
|
9B |
CSI |
Control sequence introducer |
|
9C |
ST |
String terminator |
|
9D |
OSC |
Operating system command |
|
9E |
PM |
Privacy message |
|
9F |
APC |
Application program command |
|
Other character |
||
|
A0 |
|
[Reserved] 2 |
|
A1 |
? |
Inverted exclamation mark |
|
A2 |
? |
Cent sign |
|
A3 |
? |
Pound sign |
|
A4 |
|
[Reserved] 2 |
|
A5 |
? |
Renminbi sign |
|
A6 |
|
[Reserved] 2 |
|
A7 |
§ |
Section sign |
|
A8 |
¤ |
General currency sign 2 |
|
A9 |
? |
Copyright sign |
|
AA |
? |
Feminine ordinal indicator |
|
AB |
? |
Left angle quotation mark |
|
AC |
|
[Reserved] 2 |
|
AD |
|
[Reserved] 2 |
|
AE |
|
[Reserved] 2 |
|
AF |
|
[Reserved] 2 |
|
B0 |
° |
Degree sign |
|
B1 |
± |
Plus/minus sign |
|
B2 |
? |
Superscript two |
|
B3 |
? |
Superscript three |
|
B4 |
|
[Reserved] 2 |
|
B5 |
? |
Micro sign |
|
B6 |
? |
Pilcrow (paragraph mark) |
|
B7 |
· |
Middle dot |
|
B8 |
|
[Reserved] 2 |
|
B9 |
? |
Superscript one |
|
BA |
? |
Masculine ordinal indicator |
|
BB |
? |
Right angle quotation mark |
|
BC |
? |
Fraction one quarter |
|
BD |
? |
Fraction one half |
|
BE |
|
[Reserved] 2 |
|
BF |
? |
Inverted question mark |
|
C0 |
? |
Capital A with grave accent |
|
C1 |
? |
Capital A with acute accent |
|
C2 |
? |
Capital A with circumflex |
|
C3 |
? |
Capital A with tilde |
|
C4 |
? |
Capital A with diaeresis (umlaut) |
|
C5 |
? |
Capital A with ring above |
|
C6 |
? |
Capital AE diphthong |
|
C7 |
? |
Capital C with cedilla |
|
C8 |
? |
Capital E with grave accent |
|
C9 |
? |
Capital E with acute accent |
|
CA |
? |
Capital E with circumflex |
|
CB |
? |
Capital E with diaeresis (umlaut) |
|
CC |
? |
Capital I with grave accent |
|
CD |
? |
Capital I with acute accent |
|
CE |
? |
Capital I with circumflex |
|
CF |
? |
Capital I with diaeresis (umlaut) |
|
D0 |
|
[Reserved] 2 |
|
D1 |
? |
Capital N with tilde |
|
D2 |
? |
Capital O with grave accent |
|
D3 |
? |
Capital O with acute accent |
|
D4 |
? |
Capital O with circumflex |
|
D5 |
? |
Capital O with tilde |
|
D6 |
? |
Capital O with diaeresis (umlaut) |
|
D7 |
OE |
Capital OE ligature 2 |
|
D8 |
? |
Capital O with slash |
|
D9 |
? |
Capital U with grave accent |
|
DA |
? |
Capital U with acute accent |
|
DB |
? |
Capital U with circumflex |
|
DC |
? |
Capital U with diaeresis (umlaut) |
|
DD |
Y |
Capital Y with diaeresis (umlaut) |
|
DE |
|
[Reserved] 2 |
|
DF |
? |
German sharp s |
|
E0 |
à |
Lowercase a with grave accent |
|
E1 |
á |
Lowercase a with acute accent |
|
E2 |
? |
Lowercase a with circumflex |
|
E3 |
? |
Lowercase a with tilde |
|
E4 |
? |
Lowercase a with diaeresis (umlaut) |
|
E5 |
? |
Lowercase letter a with ring |
|
E6 |
? |
Lowercase ae diphthong |
|
E7 |
? |
Lowercase letter c with cedilla |
|
E8 |
è |
Lowercase letter e with grave accent |
|
E9 |
é |
Lowercase letter e with acute accent |
|
EA |
ê |
Lowercase letter e with circumflex |
|
EB |
? |
Lowercase letter e with umlaut (diaeresis) |
|
EC |
ì |
Lowercase letter i with grave accent |
|
ED |
í |
Lowercase letter i with acute accent |
|
EE |
? |
Lowercase letter i with circumflex |
|
EF |
? |
Lowercase letter i with umlaut (diaeresis) |
|
F0 |
|
Reserved 2 |
|
F1 |
? |
Lowercase letter n with tilde |
|
F2 |
ò |
Lowercase letter o with grave accent |
|
F3 |
ó |
Lowercase letter o with acute accent |
|
F4 |
? |
Lowercase letter o with circumflex |
|
F5 |
? |
Lowercase letter o with tilde |
|
F6 |
? |
Lowercase letter o with umlaut (diaeresis) |
|
F7 |
oe |
Lowercase oe ligature 2 |
|
F8 |
? |
Lowercase letter o with slash |
|
F9 |
ù |
Lowercase letter u with grave accent |
|
FA |
ú |
Lowercase letter u with acute accent |
|
FB |
? |
Lowercase letter u with circumflex |
|
FC |
ü |
Lowercase letter u with umlaut (diaeresis) |
|
FD |
? |
Lowercase letter y with umlaut (diaeresis) 2 |
|
FE |
|
Reserved 2 |
|
FF |
|
Reserved 2 |