Encoding tools

Convert Hexadecimal - Ascii and Ascii to Hex

HEX
Paste hex bytes or type ASCII text. Useful for ISO8583 message payloads.

HEX → ASCII

hex in

Paste hex like 492077616e742031303030206170706c6573, then press Convert.

ready

ASCII → HEX

text in

Type ASCII text, then press Convert to get hex.

—
  How it works

Hex to ASCII conversion

The simple method is to convert each pair of hex digits to one ASCII character using the table on the right.

JavaScript

var asciiValue="1234567890ABCDEFGHIJ";
function asciiToHex(asciiValue){
  var arr1 = [];
  for (var n = 0, l = asciiValue.length; n < l; n++) {
    var hex = Number(asciiValue.charCodeAt(n)).toString(16);
    arr1.push(hex);
  }
  return arr1.join('');
}

Java

String asciiValue="1234567890ABCDEFGHIJ";
private static String asciiToHex(String asciiValue) {
  char[] chars = asciiValue.toCharArray();
  StringBuffer hex = new StringBuffer();
  for (int i = 0; i < chars.length; i++) {
    hex.append(Integer.toHexString((int) chars[i]));
  }
  return hex.toString();
}

C++

string hex = "1234567890ABCDEFGHIJ";
int len = hex.length();
std::string newString;
for(int i=0; i< len; i+=2) {
  string byte = hex.substr(i,2);
  char chr = (char) (int)strtol(byte.c_str(), null, 16);
  newString.push_back(chr);
}
  Reference

Hex to ASCII table

Hexadecimal Binary ASCII
Character
00 00000000 NUL
01 00000001 SOH
02 00000010 STX
03 00000011 ETX
04 00000100 EOT
05 00000101 ENQ
06 00000110 ACK
07 00000111 BEL
08 00001000 BS
09 00001001 HT
0A 00001010 LF
0B 00001011 VT
0C 00001100 FF
0D 00001101 CR
0E 00001110 SO
0F 00001111 SI
10 00010000 DLE
11 00010001 DC1
12 00010010 DC2
13 00010011 DC3
14 00010100 DC4
15 00010101 NAK
16 00010110 SYN
17 00010111 ETB
18 00011000 CAN
19 00011001 EM
1A 00011010 SUB
1B 00011011 ESC
1C 00011100 FS
1D 00011101 GS
1E 00011110 RS
1F 00011111 US
20 00100000 Space
21 00100001 !
22 00100010 "
23 00100011 #
24 00100100 $
25 00100101 %
26 00100110 &
27 00100111 '
28 00101000 (
29 00101001 )
2A 00101010 *
2B 00101011 +
2C 00101100 ,
2D 00101101 -
2E 00101110 .
2F 00101111 /
30 00110000 0
31 00110001 1
32 00110010 2
33 00110011 3
34 00110100 4
35 00110101 5
36 00110110 6
37 00110111 7
38 00111000 8
39 00111001 9
3A 00111010 :
3B 00111011 ;
3C 00111100 <
3D 00111101 =
3E 00111110 >
3F 00111111 ?
40 01000000 @
41 01000001 A
42 01000010 B
43 01000011 C
44 01000100 D
45 01000101 E
46 01000110 F
47 01000111 G
48 01001000 H
49 01001001 I
4A 01001010 J
4B 01001011 K
4C 01001100 L
4D 01001101 M
4E 01001110 N
4F 01001111 O
50 01010000 P
51 01010001 Q
52 01010010 R
53 01010011 S
54 01010100 T
55 01010101 U
56 01010110 V
57 01010111 W
58 01011000 X
59 01011001 Y
5A 01011010 Z
5B 01011011 [
5C 01011100 \
5D 01011101 ]
5E 01011110 ^
5F 01011111 _
60 01100000 `
61 01100001 a
62 01100010 b
63 01100011 c
64 01100100 d
65 01100101 e
66 01100110 f
67 01100111 g
68 01101000 h
69 01101001 i
6A 01101010 j
6B 01101011 k
6C 01101100 l
6D 01101101 m
6E 01101110 n
6F 01101111 o
70 01110000 p
71 01110001 q
72 01110010 r
73 01110011 s
74 01110100 t
75 01110101 u
76 01110110 v
77 01110111 w
78 01111000 x
79 01111001 y
7A 01111010 z
7B 01111011 {
7C 01111100 |
7D 01111101 }
7E 01111110 ~
7F 01111111 DEL
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