What is ASCII to HEX Converter?

A browser-based tool that converts ASCII text to hexadecimal format instantly. Essential for debugging, binary data verification, and network protocol analysis in development workflows.

Text input is converted to hexadecimal in real-time, with multiple output formats and line break options to ensure readable display for your specific use case.

How to Use

Enter ASCII text in the input area and it will be converted to hexadecimal according to your selected format settings.

Format Settings

Choose from 5 output formats based on your needs.

• Space (AA BB) - Inserts spaces between bytes. Human-readable and commonly used format
• None (AABB) - Continuous hex string without separators. Ideal for compact display
• 0x (0xAA) - Adds 0x prefix to each byte. C-style notation
• Comma (AA, BB) - Separates bytes with commas and spaces. Easy to use as array notation
• 0x + Comma (0xAA, 0xBB) - Combines 0x prefix with comma separation. Perfect for array definitions in code

Line Break Settings

Specify line break positions to format long data for better readability.

• No Line Break - Display everything on one line
• Every 8 Bytes - Break every 8 bytes for compact display
• Every 16 Bytes - Break every 16 bytes, common in memory dump format
• Every 32 Bytes - Break every 32 bytes, useful for large data inspection

Case Settings

Display hexadecimal characters in uppercase or lowercase.

• Uppercase - 48656C6C6F (A-F)
• Lowercase - 48656c6c6f (a-f)

Use Cases

• Debugging - Verify binary data content
• Data analysis - Check file and network packet content
• Protocol development - Verify and validate byte sequences
• Memory dumps - View memory content in hexadecimal
• Character encoding - Check byte representation of ASCII characters

ASCII and Hexadecimal Relationship

Each ASCII character has a value from 0 to 127, represented in hexadecimal notation.

Character 'A' → ASCII code: 65 → Hex: 41
Character 'a' → ASCII code: 97 → Hex: 61
Character '0' → ASCII code: 48 → Hex: 30

Example: Converting "Hello" to hexadecimal

H → 0x48
e → 0x65
l → 0x6C
l → 0x6C
o → 0x6F

Result: 48 65 6C 6C 6F

Hexadecimal notation represents 1 byte (8 bits) with 2 hexadecimal digits, making data compact and human-readable.