Base16 Encode/Decode - Base64 Tools - Free Online Base64 Tool: Image to Base64/SQL Base64/Multi-format Decoding

Function Description

🔢 Hexadecimal Encoding

Convert text to hexadecimal (Base16) format

🔓 Hexadecimal Decoding

Convert hexadecimal string back to original text

🔤 Character Set

Uses 0-9 and A-F characters (16 characters total)

🔒 Local Processing

All operations are performed locally to protect data security

Usage Steps

Input Text: Enter the text to be encoded in the input box
Encode: Click "Text → Hex" button to perform hexadecimal encoding
Decode: Enter hexadecimal in the output box, click "Hex → Text" to decode
Copy Result: Use "Copy Output" button to copy the result

Case Examples

📝 Simple Text

Original: Hello

Hex: 48656c6c6f

🔢 Number Encoding

Original: 123

Hex: 313233

🌐 URL Encoding

Original: https://

Hex: 68747470733a2f2f

🎨 Special Characters

Original: @#$

Hex: 402324

Application Scenarios

🔍

Debug Analysis

View hexadecimal representation of text

💾

Data Storage

Store data in hexadecimal format

🔧

Development Tools

Program development and debugging tools

📊

Data Analysis

Analyze binary data content

🔍 Base16 (Hexadecimal) Working Principle

Character Set: Base16 uses 16 symbols 0-9 and A-F to represent bytes
Grouping: Each byte (8 bits) is split into two 4-bit nibbles, each nibble maps to one hexadecimal digit
Encoding Example: Byte 0x4F → Binary 0100 1111 → Hexadecimal "4F"
Decoding: Decoding groups every two hexadecimal digits into one byte, spaces and newlines are ignored
Security Note: Hexadecimal is a representation method, not encryption, it does not provide confidentiality

Notes

Case Sensitivity: Hexadecimal letters are case-insensitive, A-F and a-f are equivalent
Length Requirement: Hexadecimal string length must be even, odd length will cause error
Character Limit: Can only contain 0-9, A-F (or a-f) characters, other characters will be ignored
Whitespace Handling: Spaces, newlines and other whitespace characters in input will be automatically ignored
Encoding Efficiency: Hexadecimal encoding will double the data size

Base16 (Hex) Converter