Hex Encoder
Convert text to hexadecimal and decode hex back to text. Essential tool for developers and programmers.
How Hexadecimal Encoding Works
Hexadecimal (base-16) uses 16 symbols: digits 0-9 and letters A-F. Each hex digit represents exactly 4 binary bits (a "nibble"), making it a compact way to represent binary data.
Hex Digits:
Example: "Hi" in Hex
'H' → ASCII 72 → 48
'i' → ASCII 105 → 69
Result: 48 69 (or 0x48 0x69)
ASCII to Hex Reference
| Char | ASCII | Hex | Binary |
|---|---|---|---|
| A | 65 | 41 | 0100 0001 |
| Z | 90 | 5A | 0101 1010 |
| a | 97 | 61 | 0110 0001 |
| 0 | 48 | 30 | 0011 0000 |
| (space) | 32 | 20 | 0010 0000 |
| @ | 64 | 40 | 0100 0000 |
Hex Color Codes in Web Design
In web development, hex codes represent colors in #RRGGBB format. Each pair (00-FF) represents the intensity of Red, Green, and Blue respectively.
White
#FFFFFF
RGB: 255, 255, 255
Black
#000000
RGB: 0, 0, 0
Red
#FF0000
RGB: 255, 0, 0
Green
#00FF00
RGB: 0, 255, 0
Blue
#0000FF
RGB: 0, 0, 255
Yellow
#FFFF00
RGB: 255, 255, 0
Hex in Programming
Hexadecimal is essential in programming for memory addresses, color codes, and byte manipulation. Most languages use the 0x prefix for hex literals.
// JavaScript
const value = 0xFF; // 255
const color = "#FF5733";
// Python
value = 0xFF # 255
hex_string = hex(255) # '0xff'
Frequently Asked Questions
Tool Features
Instant Conversion
Real-time encoding and decoding as you type.
Multiple Formats
Output with spaces, 0x prefix, or continuous string.
Privacy Focused
All processing happens in your browser. No data sent to servers.
Free Forever
No registration, no limits, completely free to use.