Hex Encoder/Decoder - Text to Hexadecimal Converter
Our Hex Encoder/Decoder is a free online tool that converts text to hexadecimal and decodes hex back to text. Essential for developers working with binary data, network protocols, and low-level programming.
Features of Hex Encoder/Decoder
Our tool provides everything you need:
- Instant conversion - Real-time encoding and decoding
- Separator options - Space, none, or colon between bytes
- Case control - Uppercase or lowercase hex output
- Copy to clipboard - One-click copy for results
- Client-side processing - Complete privacy, no server involved
- Works offline - Install as PWA for offline use
What is Hexadecimal?
Hexadecimal (hex) is a base-16 number system using 16 symbols: 0-9 and A-F. It's widely used in computing because it's more compact than binary while still being easy to convert.
One hex digit represents 4 bits, and two hex digits represent one byte (8 bits).
Hex Values Reference
| Decimal | Hex | Binary |
|---|---|---|
| 0 | 0 | 0000 |
| 10 | A | 1010 |
| 15 | F | 1111 |
| 255 | FF | 11111111 |
Common Character Hex Values
| Character | Hex |
|---|---|
| A | 41 |
| Z | 5A |
| a | 61 |
| 0 | 30 |
| Space | 20 |
How to Use Hex Encoder
To Encode (Text → Hex):
- Select the "Text → Hex" tab
- Type or paste your text in the input area
- Choose separator (space, none, colon)
- Toggle uppercase/lowercase as needed
- Copy the result using the Copy button
To Decode (Hex → Text):
- Select the "Hex → Text" tab
- Paste your hex string (0x prefix is optional)
- View the decoded text instantly
- Copy the result using the Copy button
FAQs About Hex Encoder/Decoder
Can I use 0x prefix in hex input?
Yes, the decoder automatically strips 0x prefixes if present.
What happens with invalid hex?
The tool will show an error message if the input contains non-hex characters or has an odd length.
Is my data secure?
Yes! All processing happens in your browser. We never see or store your data.
Why use hex instead of binary?
Hex is more compact - one hex digit represents 4 binary digits. "A5" is easier to read than "10100101".
Use Cases
- Network debugging - Analyze packet data
- Color codes - Work with hex color values (#FF5733)
- Binary file analysis - View file contents in hex
- Programming - Debug hexadecimal values
- MAC addresses - Convert and verify MAC addresses
- Cryptography - Work with encryption keys and hashes