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How to Convert Hexadecimal to Text

Converting hexadecimal (hex) to text involves interpreting hexadecimal numbers as characters based on a character encoding standard, such as ASCII or Unicode. Hexadecimal, a base-16 system, uses sixteen symbols (0-9 and A-F) to represent values. Characters like letters, digits, and symbols are mapped to specific values within these encoding standards.

Understanding the Systems

  • Hexadecimal System (Base-16):Hex uses digits 0-9 to represent values 0 to 9 and letters A-F to represent values 10 to 15. Two hex digits can represent a byte (0x00 to 0xFF), which in turn can correspond to a character in various encoding schemes.
  • Character Encoding: ASCII and Unicode are common standards for mapping characters to numeric values. ASCII uses one byte per character, fitting within a single hex pair, while Unicode extends this to support a vast array of global characters and symbols.:

Conversion Process: Hex to text

  1. Step 1: Break Down the Hexadecimal String

    2. Split the hexadecimal string into pairs, as each pair represents a byte (or a character in ASCII). Fr example, the hex string 48656C6C6F is broken down into the pairs 48, 65 6C, 6C, 6F.

  2. Step 2: Convert Hex Pairs to Decimal

    3. Convert each hex pair to its decimal equivalent using the base-16 conversion formula. This step is crucial for mapping to the correct character in the encoding scheme.

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  4. Step 3: Map Decimal Values to Characters
  5. Following the example above, 48656C6C6F converts to “Hello”.

Example Conversion

Let’s convert the hex string 48656C6C6F to text using the steps outlined above.

  1. Breakdown: 48 65 6C 6C 6F
    • 48 → 72 (H)
    • 65 → 101 (e)
    • 6C → 108 (l)
    • 6C → 108 (l)
    • 6F → 111 (o)
  3. Decimal to Character Mapping: 48656C6C6F → “Hello”
  4. Concatenate: The hex string 48656C6C6F converts to the text “Hello”.

Conclusion

This process demonstrates the bridge between hexadecimal data and human-readable text through character encoding standards. Understanding this conversion is fundamental in various computing tasks, such as programming, data encoding, and cybersecurity, where hex is frequently used to represent binary data compactly.