What is hexadecimal encoding?

Hexadecimal encoding converts text into a sequence of hex digits (0-9, A-F). Each character is represented by its ASCII or UTF-8 byte value in hexadecimal. For example, 'A' (ASCII 65) becomes '41'. Hex is more compact than binary and commonly used in programming.

Hexadecimal is widely used because: it's more compact than binary (2 hex digits = 8 bits), it's easy to convert to/from binary (each hex digit = 4 bits), it's used in memory addresses, color codes, and binary data representation. It's the standard way to display binary data in a readable format.

What's the difference between hex encoding and hex numbers?

Hex encoding converts text character-by-character to hex bytes. Hex numbers represent numeric values in base 16. For example, '255' as a hex number is 'FF', but as hex-encoded text it's '32 35 35' (three characters). This tool does text encoding, not number conversion.

Can I use the 0x prefix?

Yes! When decoding, the tool automatically removes the '0x' prefix if present. This is common in programming (e.g., 0x48656C6C6F). You can also use spaces between bytes or enter continuous hex strings.

How does UTF-8 encoding work?

UTF-8 is a variable-width encoding. ASCII characters (0-127) use 1 byte (2 hex digits). Other characters use 2-4 bytes. For example, 'A' is '41', 'é' is 'C3 A9', and '你' is 'E4 BD A0'. This allows representing all Unicode characters efficiently.

What can I use this for?

Hex encoding is useful for: debugging network protocols, working with binary files, analyzing memory dumps, understanding data encoding, and educational purposes. It's commonly used when working with low-level systems, cryptography, or when you need to see the raw byte representation of text.

Tools

Mode

Input (Text)

Output (Hex)

48 65 6C 6C 6F

Hex Converter — Encode & Decode Text to Hexadecimal

Free hexadecimal converter to encode text to hex and decode hex to text. Support for UTF-8 encoding. Perfect for working with hex data and debugging. All conversion runs locally in your browser.

Features

✓Encode text to hexadecimal representation
✓Decode hexadecimal back to text
✓Support for UTF-8 encoding
✓Handle multi-byte characters
✓Instant conversion as you type
✓Copy result with one click
✓Perfect for debugging hex data
✓Useful for working with binary protocols
✓No data sent to server
✓All conversion runs locally in your browser

How to Use

1Select conversion mode (encode or decode).
2Enter your text or hexadecimal in the input field.
3The result appears instantly.
4Click copy button to copy the result.
5Switch modes to convert in the opposite direction.

Frequently Asked Questions

Related Tools

Binary Converter — Encode & Decode Text to Binary

Free binary converter to encode text to binary and decode binary to text. Support for UTF-8 encoding. Perfect for learning binary representation and data encoding. All conversion runs locally in your browser.

Number Base Converter — Convert Between Binary, Octal, Decimal & Hex

Free number base converter to convert numbers between binary, octal, decimal, and hexadecimal. Instant conversion with step-by-step explanation. Perfect for programmers and students. All calculations run locally in your browser.