Hex Encoder/Decoder Online - EXUtil Extended Utilities
Free online hexadecimal encoder and decoder. Convert text to hex strings and back with configurable case and separator options for low-level data analysis.
How to use
- Paste or import the content you want to process.
- Choose an available action and run the tool.
- Review the result, then copy or download the output.
Frequently asked questions
- What is Hex encoding used for?
- Commonly used for debugging, network protocol analysis, color value representation, viewing binary file contents, making binary data human-readable.
- How to separate bytes?
- Choose from no separator, space-separated, or colon-separated formats. Space-separated is more readable; no separator is more compact.
- Does case matter?
- No, case doesn't matter in Hex encoding. AB and ab represent the same value. Lowercase is commonly used, but uppercase is equally valid.
- What's the difference between Hex and Base64?
- Hex uses 2 characters per byte, very readable but doubles size; Base64 uses 4 characters per 3 bytes, more compact but less readable.
- How are color values represented?
- Web colors use #RRGGBB format, like #FF5733 for red FF, green 57, blue 33. Also supports #RRGGBBAA format with alpha transparency.