Hex ↔ Text Converter

What is Hexadecimal?

Hexadecimal (base-16) is a number system using digits 0–9 and letters A–F. It's the standard way to represent binary data in computing because each hex digit equals exactly 4 bits. You'll encounter hex in color codes (#FF5733), memory addresses, cryptography, and data analysis.

How to Use the Hex Converter

Text to Hex: Paste any text on the left. Select your encoding (UTF-8 handles emoji and all Unicode), choose a separator format, and toggle between uppercase/lowercase. The conversion happens instantly.

Hex to Text: Paste hex values on the right in any format (spaces, colons, 0x prefixes). The converter auto-detects separators and decodes back to readable text. Use the same encoding as the original.

Byte View: Shows each character as a hex/decimal pair, helping you understand raw byte values. Emoji and multi-byte characters display all their bytes.

Use Cases

• Converting and analyzing color codes (RGB hex)
• Debugging protocols, APIs, and binary data
• Understanding Unicode and emoji byte sequences
• Encoding/decoding for cryptography and security
• Analyzing network packets and memory dumps
• Data validation and format verification

Frequently Asked Questions

What's the difference between UTF-8, ASCII, and Latin-1?

ASCII supports only 128 characters (English letters, numbers, symbols). Latin-1 supports 256 characters (adds accented letters). UTF-8 supports all Unicode—emoji, Asian scripts, everything. Use UTF-8 unless you need a specific encoding.

Why does one emoji produce 4 hex pairs?

Emoji are multi-byte characters in UTF-8. Most emoji use 4 bytes (8 hex digits), some use 3 or more. This is normal and correct—one character can have multiple bytes.

Which separator should I use?

Space: Most readable (48 65 6C). Colon: Used in MAC addresses (48:65:6C). None: Compact (48656C). 0x Prefix: Programmer-style (0x48 0x65 0x6C).

Is my data private?

Yes. All conversion runs entirely in your browser. No data is sent to servers, stored, or logged. You have complete privacy and control.

Can I convert very large files?

The tool works with large inputs (your browser is the only limit), but mega-files (>50MB) may slow your device. For huge files, use command-line tools like `xxd` or `hexdump`.

How do I convert a color code to hex?

RGB hex colors (like FF5733) are already in hex format—use them directly as #FF5733 in CSS. Type the RGB values into the hex panel to see the decimal breakdown.