Hexadecimal ↔ Text Converter

Convert text to hexadecimal (hex) values and back. Essential for developers, security researchers, and anyone working with low-level data.

Hex Converter Tool
Client-Side — 100% Private
100% Private

All processing is done locally. Your text and hex values never leave your browser.

Flexible Formatting

Choose separators, uppercase/lowercase output, and optional 0x prefixes.

Smart Input Parsing

Automatically strips 0x prefixes, colons, spaces, and dashes — paste from any source.

Live Statistics

Track character count and number of hex byte groups in real time.

What is Hexadecimal Encoding?

Hexadecimal (base-16) is a number system that uses 16 symbols: 0–9 and A–F. Each hex digit represents exactly 4 binary bits (a "nibble"), and two hex digits represent one byte (8 bits).

When encoding text to hex, each character's Unicode code point is converted to its two-digit (or more) hexadecimal representation.

Common use cases include:

  • Representing memory addresses and machine code in debuggers
  • Color codes in CSS (#FF5733)
  • MAC addresses (AA:BB:CC:DD:EE:FF)
  • Cryptography (hash outputs like SHA-256, MD5)
  • Network packet analysis and protocol debugging
  • File format signatures (magic bytes)
Frequently Asked Questions

The 0x prefix is a common programming convention to indicate that the following number is in base-16 (hexadecimal). For example, 0xFF means the hex value FF which equals 255 in decimal. This tool's decoder automatically handles and strips this prefix.

Yes. The decoder intelligently strips separators like spaces, colons (:), and dashes before parsing, so you can paste hex strings in common formats like 48:65:6C:6C:6F or 48 65 6C 6C 6F or even 48656C6C6F.

This happens if the hex values represent control characters (like null bytes) or characters that are not displayable in the browser's chosen font. The character was decoded correctly but cannot be rendered visually.