How it works
The Hex Text Converter encodes text as hexadecimal byte values and decodes hex strings back to readable text. Each character is represented as two hexadecimal digits representing its UTF-8 byte value — "A" becomes "41", "Hello" becomes "48 65 6c 6c 6f".
Hexadecimal is the standard representation used in memory dumps, network packet captures, color values, SHA hashes, UUID strings, and binary file inspection. Web developers encounter hex constantly in color codes (#FF5733), ASCII escape sequences (A), and URL encoding (%20 for space).
How to use it: type or paste text to encode it to hex. Paste a space-separated or continuous hex string to decode it back. The tool accepts both uppercase (4F) and lowercase (4f) hex input and handles multi-byte Unicode characters correctly by encoding their UTF-8 byte sequences.
Use cases include: inspecting hidden characters in text (zero-width spaces, non-breaking spaces, and Unicode control characters all show up distinctly in hex), solving encoding puzzles, verifying byte-level content of strings before sending them in network requests, and debugging character encoding issues between systems that use different text encodings.
Privacy: hex strings sometimes contain encoded credentials, API responses, or proprietary data. Processing them locally ensures none of that content is transmitted.
Frequently Asked Questions
- Text is encoded to its UTF-8 byte values in hexadecimal. ASCII characters produce two hex digits per character. Non-ASCII characters (like é or 中) produce 4 or 6 hex digits because they require 2 or 3 UTF-8 bytes.
- Hex color codes (#FF5733) represent RGB color channel values. Hex text encoding represents character byte values. They both use hexadecimal notation but for completely different purposes.
- Yes. Zero-width spaces (U+200B), non-breaking spaces (U+00A0), and Unicode control characters all have distinct hex values that are invisible in plain text but visible in hex output.
- Yes. The decoder accepts both space-separated hex pairs ('48 65 6c 6c 6f') and continuous hex strings ('48656c6c6f').