What is Hex (Base16) Tool?
Hexadecimal (or Hex) is a base-16 numeral system used heavily in computing. It uses sixteen distinct symbols: 0-9 to represent values zero to nine, and A-F to represent values ten to fifteen. Hex is the standard way to represent binary data in a human-readable format because each hex digit represents exactly 4 bits (a nibble), and two hex digits represent a byte (8 bits). This tool allows you to convert any text string into its Hex representation and vice versa, which is essential for debugging binary files, network packets, or working with color codes.
Input Formats
- Plain text
- Hex strings (with or without spaces)
- 0x prefixed strings
Output Results
- Hex string
- Decoded text
- Copy-ready result
Key Features
Who is this for?
Network Debugging
Analyzing packet captures or raw data dumps often displayed in Hex.
Web Design
Converting RGB values or text to Hex color codes (though specific color tools are better for this).
Smart Contracts
Blockchain developers encoding function calls or data fields in Hex for Ethereum transactions.
How to Use
Paste your text or Hex string.
Select 'Encode' to convert text to Hex.
Select 'Decode' to convert Hex to text.
Copy the result.
Examples
Input
HelloOutput
48656c6c6fCommon Errors
- Odd length hex strings (must be pairs)
- Invalid characters (G-Z are not valid hex)
- Confusing Hex with Base64
Code Examples
JavaScript
function toHex(str) {
return Array.from(str).map(c =>
c.charCodeAt(0).toString(16).padStart(2, '0')
).join('');
}Python
text = 'Hello'
hex_string = text.encode('utf-8').hex()
print(hex_string)