ASCII to Hex Converter - Free Online Tool

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🔒 Client-side — Your data never leaves your browser ✅ 100% Free — No signup, no limits ⚡ Instant — No server processing

📋 How to Use

1. Enter Text/Hex — Enter your ASCII text in the input box
2. Choose Direction — Choose conversion direction (ASCII→Hex or Hex→ASCII)
3. View Result — View real-time conversion results
4. Copy & Use — Click copy to get the converted result

ASCII (American Standard Code for Information Interchange) is a character encoding scheme using numbers 0-127 for letters, digits, and symbols. Hex (hexadecimal) is base-16 using digits 0-9 and A-F. ASCII to Hex converts each character's ASCII code value to its hexadecimal representation.

This tool supports the standard ASCII character set (0-127), including English letters (A-Z, a-z), digits (0-9), common punctuation marks, and control characters. Unicode extended characters (Chinese, emoji) are not supported.

Input Hex strings can be space-separated or comma-separated, e.g., '48 65 6C 6C 6F' or '48,65,6C,6C,6F'. Continuous Hex without separators is also supported but must have even length.

ASCII↔Hex conversion is commonly used for: 1) Debugging network protocols and binary data; 2) Embedded systems programming; 3) Analyzing and modifying binary files; 4) Shellcode development in cybersecurity; 5) Learning computer fundamentals.