How do I use the Hex Decoder & Encoder Online?

Hex Decoder & Encoder Online

Our Online Hex Encoder and Decoder is a powerful, real-time tool designed to transform between standard text and hexadecimal base-16 representations. Whether you are a developer debugging binary data, a student learning number systems, or a security professional analyzing hex-encoded strings, our tool provides instant, accurate results in your browser.

UPPERCASE0x PrefixSpaces

Input Text

Result

63c

6Fo

6En

76v

65e

72r

74t

69i

6En

67g

74t

65e

78x

74t

6Fo

68h

65e

78x

What is Hex Encoder & Decoder?

Hexadecimal (or base-16) is a number system that uses sixteen distinct symbols: 0–9 and A–F. Hexadecimal encoding is the standard way to represent binary data in a compact, human-readable format that is easier for developers to work with than raw 1s and 0s.

Difference Between ASCII and Hex Encoding

While often used together, ASCII and Hex represent different concepts. ASCII (American Standard Code for Information Interchange) is a character encoding standard where each character is assigned a specific numeric value (0-127). Hexadecimal is simply a way of representing those numeric values in base-16.

For example, the character 'A' has an ASCII decimal value of 65. In hexadecimal, this value is represented as 41. Our tool allows you to bridge these two formats instantly.

How to Use the Hex Encoder

Enter your plain text or hexadecimal string into the input area. Our tool automatically detects the input type.

Choose the conversion mode: Hex to Text (Decoding) or Text to Hex (Encoding) using the tabs.

Watch as the result appears instantly in the output section with no delay or page reloads.

Copy the converted data to your clipboard or download it as a text file for your project.

Use the provided ASCII-to-Hex reference table below to understand the character-to-value mapping.

Char	Hex	Dec
0	`30`	48
1	`31`	49
2	`32`	50
3	`33`	51
4	`34`	52
5	`35`	53
6	`36`	54
7	`37`	55
8	`38`	56
9	`39`	57
A	`41`	65
B	`42`	66
C	`43`	67
D	`44`	68
E	`45`	69
F	`46`	70
G	`47`	71
H	`48`	72
I	`49`	73
J	`4A`	74
K	`4B`	75
L	`4C`	76
M	`4D`	77
N	`4E`	78
O	`4F`	79
P	`50`	80
Q	`51`	81
R	`52`	82
S	`53`	83
T	`54`	84
U	`55`	85
V	`56`	86
W	`57`	87
X	`58`	88
Y	`59`	89
Z	`5A`	90
a	`61`	97
b	`62`	98
c	`63`	99
d	`64`	100
e	`65`	101
f	`66`	102
g	`67`	103
h	`68`	104
i	`69`	105
j	`6A`	106
k	`6B`	107
l	`6C`	108
m	`6D`	109
n	`6E`	110
o	`6F`	111
p	`70`	112
q	`71`	113
r	`72`	114
s	`73`	115
t	`74`	116
u	`75`	117
v	`76`	118
w	`77`	119
x	`78`	120
y	`79`	121
z	`7A`	122

Char

Hex

Dec

30

31

32

33

34

35

36

37

38

39

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

61

62

63

64

100

65

101

66

102

67

103

68

104

69

105

6A

106

6B

107

6C

108

6D

109

6E

110

6F

111

70

112

71

113

72

114

73

115

74

116

75

117

76

118

77

119

78

120

79

121

7A

122

Key Features

Bidirectional conversion (text ↔ hex) with smart auto-switch

Instant real-time processing as you type for maximum productivity

Full support for all Unicode characters and symbols

No length limitations for large data strings or large files

One-click copy to clipboard and file download options

100% Client-side processing - your data never leaves your device

Clean, modern responsive interface optimized for all devices

Completely free to use with no hidden limits or accounts required

Common Use Cases

Programming and software development debugging

Data encoding for network transmission analysis

Analyzing hexadecimal data in logs and memory dumps

Converting color codes between formats (#RRGGBB)

Learning the hexadecimal number system and base conversion

Validating hex strings and checking character encodings

Cybersecurity analysis of obfuscated payloads

Inspecting file headers and low-level data structures

Tips & Best Practices

Hexadecimal uses numbers 0-9 and letters A-F to represent 16 values.

Each byte of text is represented exactly by two hexadecimal digits.

Prefixing hex values with "0x" is common in code but not required here.

Spaces between hex bytes help readability but can be removed if needed.

Verify your hex format (ensure valid A-F, 0-9) if decoding errors occur.

Use this tool for debugging binary representation within text packets.

Hex is the standard representation for memory addresses in most systems.

Frequently Asked Questions

Do you need any special software to use this converter?

This is a free to use online tool. No special software or downloads are required to use the tool.

How do you indicate a hex format number?

0x before the number means it is in hexadecimal format like 0x4B, 0x41. Alternately, it is also indicated by 'h' as suffix like 3Ah (means hex 3A or 0x3A).

What is the use of hexadecimal encoding?

It is more compact and a more human readable and understandable format than the binary system of 1's and 0's.

Hexadecimal scheme is also used in URL encoding to escape special reserved characters for transmission over internet.

What is hex code?

In Color coding, hex code is used to represent the Red, Green and Blue colors in hexadecimal format

See RGB To HEX for more details

What does hex 0A , 0D represent?

They are control characters also known as CRLF. 0A is line feed (LF). 0D is carriage return (CR)

Difference between ASCII and Hexadecimal?

Both are used to represent character codes and have different values to represent them. ASCII has a range from 0 to 127 to represent decimals and A-Z, a-z and other commonly used special chars.

In Hexadecimal format, the same ASCII codes are in the range 00 to FF.

What is the range / maximum hexadecimal system can support?

Hexadecimal uses 16 diff values 0-9, A-F to represent 8 bit of data.

So 16 to the power of 7 is the total character that can be represented in hexadecimal format which is 235.4 million (235435456).

Difference between base 64 encoding and hex encoding?

Hex encoding also called as base 16 and it uses 4 bits for represent a character. 1 byte for 2 chars.

Base 64 uses 6 bits to represent a character. 12 bits (1 byte + 4 bits) for 2 characters and 4 bytes for 3 chars.

What is UTF-8 encoding?

UTF-8 is the standard encoding used for encoding text. Every character in Unicode has a unique code point.

UTF-8 is a variable width encoding format. It uses 1 byte (8 bits) to represent ascii range characters and extends to 2, 3 or 4 bytes to cover full range of charset.

UTF-8 is apt for text encoding, hex encoding is more suitable for binary form of data.

Hex Decoder & Encoder Online

Input Text

Result

What is Hex Encoder & Decoder?

Difference Between ASCII and Hex Encoding

How to Use the Hex Encoder

Hexadecimal Reference Table

Key Features

Common Use Cases

Tips & Best Practices

Frequently Asked Questions

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