ContentsASCII Table
ASCII stands for American Standard Code for Information Interchange. Computers can only understand numbers, so an ASCII code is the numerical representation of a character such as 'a' or '@' or an action of some sort. Below is the standard ASCII character set and includes descriptions of the first 32 non-printing characters.
Decimal |
Hex |
Character |
|
0 |
0 |
NUL |
(null) |
1 |
1 |
SOH |
(start of heading) |
2 |
2 |
STX |
(start of text) |
3 |
3 |
ETX |
(end of text) |
4 |
4 |
EOT |
(end of transmission) |
5 |
5 |
ENQ |
(enquiry) |
6 |
6 |
ACK |
(acknowledge) |
7 |
7 |
BEL |
(bell) |
8 |
8 |
BS |
(backspace) |
9 |
9 |
TAB |
(horizontal tab) |
10 |
A |
LF |
(NL line feed, new line) |
11 |
B |
VT |
(vertical tab) |
12 |
C |
FF |
(NP form feed, new page) |
13 |
D |
CR |
(carriage return) |
14 |
E |
SO |
(shift out) |
15 |
F |
SI |
(shift in) |
16 |
10 |
DLE |
(data link escape) |
17 |
11 |
DC1 |
(device control 1) |
18 |
12 |
DC2 |
(device control 2) |
19 |
13 |
DC3 |
(device control 3) |
20 |
14 |
DC4 |
(device control 4) |
21 |
15 |
NAK |
(negative acknowledge) |
22 |
16 |
SYN |
(synchronous idle) |
23 |
17 |
ETB |
(end of trans. block) |
24 |
18 |
CAN |
(cancel) |
25 |
19 |
EM |
(end of medium) |
26 |
1A |
SUB |
(substitute) |
27 |
1B |
ESC |
(escape) |
28 |
1C |
FS |
(file separator) |
29 |
1D |
GS |
(group separator) |
30 |
1E |
RS |
(record separator) |
31 |
1F |
US |
(unit separator) |
32 |
20 |
Space |
|
33 |
21 |
! |
|
34 |
22 |
" |
|
35 |
23 |
# |
|
36 |
24 |
$ |
|
37 |
25 |
% |
|
38 |
26 |
& |
|
39 |
27 |
' |
|
40 |
28 |
( |
|
41 |
29 |
) |
|
42 |
2A |
* |
|
43 |
2B |
+ |
|
44 |
2C |
, |
|
45 |
2D |
- |
|
46 |
2E |
. |
|
47 |
2F |
/ |
|
48 |
30 |
0 |
|
49 |
31 |
1 |
|
50 |
32 |
2 |
|
51 |
33 |
3 |
|
52 |
34 |
4 |
|
53 |
35 |
5 |
|
54 |
36 |
6 |
|
55 |
37 |
7 |
|
56 |
38 |
8 |
|
57 |
39 |
9 |
|
58 |
3A |
: |
|
59 |
3B |
; |
|
60 |
3C |
< |
|
61 |
3D |
= |
|
62 |
3E |
> |
|
63 |
3F |
? |
|
64 |
40 |
@ |
|
65 |
41 |
A |
|
66 |
42 |
B |
|
67 |
43 |
C |
|
68 |
44 |
D |
|
69 |
45 |
E |
|
70 |
46 |
F |
|
71 |
47 |
G |
|
72 |
48 |
H |
|
73 |
49 |
I |
|
74 |
4A |
J |
|
75 |
4B |
K |
|
76 |
4C |
L |
|
77 |
4D |
M |
|
78 |
4E |
N |
|
79 |
4F |
O |
|
80 |
50 |
P |
|
81 |
51 |
Q |
|
82 |
52 |
R |
|
83 |
53 |
S |
|
84 |
54 |
T |
|
85 |
55 |
U |
|
86 |
56 |
V |
|
87 |
57 |
W |
|
88 |
58 |
X |
|
89 |
59 |
Y |
|
90 |
5A |
Z |
|
91 |
5B |
[ |
|
92 |
5C |
\ |
|
93 |
5D |
] |
|
94 |
5E |
^ |
|
95 |
5F |
_ |
|
96 |
60 |
` |
|
97 |
61 |
a |
|
98 |
62 |
b |
|
99 |
63 |
c |
|
100 |
64 |
d |
|
101 |
65 |
e |
|
102 |
66 |
f |
|
103 |
67 |
g |
|
104 |
68 |
h |
|
105 |
69 |
i |
|
106 |
6A |
j |
|
107 |
6B |
k |
|
108 |
6C |
l |
|
109 |
6D |
m |
|
110 |
6E |
n |
|
111 |
6F |
o |
|
112 |
70 |
p |
|
113 |
71 |
q |
|
114 |
72 |
r |
|
115 |
73 |
s |
|
116 |
74 |
t |
|
117 |
75 |
u |
|
118 |
76 |
v |
|
119 |
77 |
w |
|
120 |
78 |
x |
|
121 |
79 |
y |
|
122 |
7A |
z |
|
123 |
7B |
{ |
|
124 |
7C |
| |
|
125 |
7D |
} |
|
126 |
7E |
~ |
|
127 |
7F |
DEL |
|