ASCII Code
Computers do not understand human language, and that is why there exists ASCII (
The American Standard Code for Information Interchange) — a character encoding scheme
based on the ordering of the English alphabet. ASCII coding is extensively used in computers,
communication equipments, web design, etc. The following table maps ASCII code (in different bases:
decimal, hexadecimal, octal) to real-world characters.
| Dec |
Hex |
Oct |
Bin |
Html |
Char |
Description |
| 0 |
0 |
000 |
00000000 |
N/A |
NUL |
null |
| 1 |
1 |
001 |
00000001 |
N/A |
SOH |
start of heading |
| 2 |
2 |
002 |
00000010 |
N/A |
STX |
start of text |
| 3 |
3 |
003 |
00000011 |
N/A |
ETX |
end of text |
| 4 |
4 |
004 |
00000100 |
N/A |
EOT |
end of transimission |
| 5 |
5 |
005 |
00000101 |
N/A |
ENQ |
enquiry |
| 6 |
6 |
006 |
00000110 |
N/A |
ACK |
acknowledge |
| 7 |
7 |
007 |
00000111 |
N/A |
BEL |
bell |
| 8 |
8 |
010 |
00001000 |
N/A |
BS |
backspace |
| 9 |
9 |
011 |
00001001 |
N/A |
TAB |
horizontal tab |
| 10 |
A |
012 |
00001010 |
N/A |
LF |
NL line feed, new line |
| 11 |
B |
013 |
00001011 |
N/A |
VT |
vertical tab |
| 12 |
C |
014 |
00001100 |
N/A |
FF |
NP form feed, new page |
| 13 |
D |
015 |
00001101 |
N/A |
CR |
carriage return |
| 14 |
E |
016 |
00001110 |
N/A |
SO |
shift out |
| 15 |
F |
017 |
00001111 |
N/A |
SI |
shift in |
| 16 |
10 |
020 |
00010000 |
N/A |
DLE |
data link escape |
| 17 |
11 |
021 |
00010001 |
N/A |
DC1 |
device control 1 |
| 18 |
12 |
022 |
00010010 |
N/A |
DC2 |
device control 2 |
| 19 |
13 |
023 |
00010011 |
N/A |
DC3 |
device control 3 |
| 20 |
14 |
024 |
00010100 |
N/A |
DC4 |
device control 4 |
| 21 |
15 |
025 |
00010101 |
N/A |
NAK |
negative knowledge |
| 22 |
16 |
026 |
00010110 |
N/A |
SYN |
synchronous idle |
| 23 |
17 |
027 |
00010111 |
N/A |
ETB |
end of trans. block |
| 24 |
18 |
030 |
00011000 |
N/A |
CAN |
cancel |
| 25 |
19 |
031 |
00011001 |
N/A |
EM |
end of medium |
| 26 |
1A |
032 |
00011010 |
N/A |
SUB |
substitute |
| 27 |
1B |
033 |
00011011 |
N/A |
ESC |
escape |
| 28 |
1C |
034 |
00011100 |
N/A |
FS |
file separator |
| 29 |
1D |
035 |
00011101 |
N/A |
GS |
group separator |
| 30 |
1E |
036 |
00011110 |
N/A |
RS |
record separator |
| 31 |
1F |
037 |
00011111 |
N/A |
US |
unit separator |
| 32 |
20 |
040 |
00100000 |
  |
Space |
space |
| 33 |
21 |
041 |
00100001 |
! |
! |
|
| 34 |
22 |
042 |
00100010 |
" (") |
" |
|
| 35 |
23 |
043 |
00100011 |
# |
# |
|
| 36 |
24 |
044 |
00100100 |
$ |
$ |
|
| 37 |
25 |
045 |
00100101 |
% |
% |
|
| 38 |
26 |
046 |
00100110 |
& (&) |
& |
|
| 39 |
27 |
047 |
00100111 |
' |
' |
|
| 40 |
28 |
050 |
00101000 |
( |
( |
|
| 41 |
29 |
051 |
00101001 |
) |
) |
|
| 42 |
2A |
052 |
00101010 |
* |
* |
|
| 43 |
2B |
053 |
00101011 |
+ |
+ |
|
| 44 |
2C |
054 |
00101100 |
, |
, |
|
| 45 |
2D |
055 |
00101101 |
- |
- |
|
| 46 |
2E |
056 |
00101110 |
. |
. |
|
| 47 |
2F |
057 |
00101111 |
/ |
/ |
|
| 48 |
30 |
060 |
00110000 |
0 |
0 |
|
| 49 |
31 |
061 |
00110001 |
1 |
1 |
|
| 50 |
32 |
062 |
00110010 |
2 |
2 |
|
| 51 |
33 |
063 |
00110011 |
3 |
3 |
|
| 52 |
34 |
064 |
00110100 |
4 |
4 |
|
| 53 |
35 |
065 |
00110101 |
5 |
5 |
|
| 54 |
36 |
066 |
00110110 |
6 |
6 |
|
| 55 |
37 |
067 |
00110111 |
7 |
7 |
|
| 56 |
38 |
070 |
00111000 |
8 |
8 |
|
| 57 |
39 |
071 |
00111001 |
9 |
9 |
|
| 58 |
3A |
072 |
00111010 |
: |
: |
|
| 59 |
3B |
073 |
00111011 |
; |
; |
|
| 60 |
3C |
074 |
00111100 |
< (<) |
< |
|
| 61 |
3D |
075 |
00111101 |
= |
= |
|
| 62 |
3E |
076 |
00111110 |
> (>) |
> |
|
| 63 |
3F |
077 |
00111111 |
? |
? |
|
| 64 |
40 |
100 |
01000000 |
@ |
@ |
|
| 65 |
41 |
101 |
01000001 |
A |
A |
|
| 66 |
42 |
102 |
01000010 |
B |
B |
|
| 67 |
43 |
103 |
01000011 |
C |
C |
|
| 68 |
44 |
104 |
01000100 |
D |
D |
|
| 69 |
45 |
105 |
01000101 |
E |
E |
|
| 70 |
46 |
106 |
01000110 |
F |
F |
|
| 71 |
47 |
107 |
01000111 |
G |
G |
|
| 72 |
48 |
110 |
01001000 |
H |
H |
|
| 73 |
49 |
111 |
01001001 |
I |
I |
|
| 74 |
4A |
112 |
01001010 |
J |
J |
|
| 75 |
4B |
113 |
01001011 |
K |
K |
|
| 76 |
4C |
114 |
01001100 |
L |
L |
|
| 77 |
4D |
115 |
01001101 |
M |
M |
|
| 78 |
4E |
116 |
01001110 |
N |
N |
|
| 79 |
4F |
117 |
01001111 |
O |
O |
|
| 80 |
50 |
120 |
01010000 |
P |
P |
|
| 81 |
51 |
121 |
01010001 |
Q |
Q |
|
| 82 |
52 |
122 |
01010010 |
R |
R |
|
| 83 |
53 |
123 |
01010011 |
S |
S |
|
| 84 |
54 |
124 |
01010100 |
T |
T |
|
| 85 |
55 |
125 |
01010101 |
U |
U |
|
| 86 |
56 |
126 |
01010110 |
V |
V |
|
| 87 |
57 |
127 |
01010111 |
W |
W |
|
| 88 |
58 |
130 |
01011000 |
X |
X |
|
| 89 |
59 |
131 |
01011001 |
Y |
Y |
|
| 90 |
5A |
132 |
01011010 |
Z |
Z |
|
| 91 |
5B |
133 |
01011011 |
[ |
[ |
|
| 92 |
5C |
134 |
01011100 |
\ |
\ |
|
| 93 |
5D |
135 |
01011101 |
] |
] |
|
| 94 |
5E |
136 |
01011110 |
^ |
^ |
|
| 95 |
5F |
137 |
01011111 |
_ |
_ |
|
| 96 |
60 |
140 |
01100000 |
` |
` |
|
| 97 |
61 |
141 |
01100001 |
a |
a |
|
| 98 |
62 |
142 |
01100010 |
b |
b |
|
| 99 |
63 |
143 |
01100011 |
c |
c |
|
| 100 |
64 |
144 |
01100100 |
d |
d |
|
| 101 |
65 |
145 |
01100101 |
e |
e |
|
| 102 |
66 |
146 |
01100110 |
f |
f |
|
| 103 |
67 |
147 |
01100111 |
g |
g |
|
| 104 |
68 |
150 |
01101000 |
h |
h |
|
| 105 |
69 |
151 |
01101001 |
i |
i |
|
| 106 |
6A |
152 |
01101010 |
j |
j |
|
| 107 |
6B |
153 |
01101011 |
k |
k |
|
| 108 |
6C |
154 |
01101100 |
l |
l |
|
| 109 |
6D |
155 |
01101101 |
m |
m |
|
| 110 |
6E |
156 |
01101110 |
n |
n |
|
| 111 |
6F |
157 |
01101111 |
o |
o |
|
| 112 |
70 |
160 |
01110000 |
p |
p |
|
| 113 |
71 |
161 |
01110001 |
q |
q |
|
| 114 |
72 |
162 |
01110010 |
r |
r |
|
| 115 |
73 |
163 |
01110011 |
s |
s |
|
| 116 |
74 |
164 |
01110100 |
t |
t |
|
| 117 |
75 |
165 |
01110101 |
u |
u |
|
| 118 |
76 |
166 |
01110110 |
v |
v |
|
| 119 |
77 |
167 |
01110111 |
w |
w |
|
| 120 |
78 |
170 |
01111000 |
x |
x |
|
| 121 |
79 |
171 |
01111001 |
y |
y |
|
| 122 |
7A |
172 |
01111010 |
z |
z |
|
| 123 |
7B |
173 |
01111011 |
{ |
{ |
|
| 124 |
7C |
174 |
01111100 |
| |
| |
|
| 125 |
7D |
175 |
01111101 |
} |
} |
|
| 126 |
7E |
176 |
01111110 |
~ |
~ |
|
| 127 |
7F |
177 |
01111111 |
 |
DEL |
delete |