ASCII Code to Text Converter

Convert ASCII/Unicode numeric codes back into readable text strings.

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ASCII Code to Text Converter
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About ASCII Code to Text Converter

This tool converts a sequence of ASCII (or Unicode code point) values back into human-readable text. You can input codes in Decimal, Hexadecimal, Binary, or Octal format, and specify the separator used between them. It's useful for decoding character codes that you might encounter in data streams, programming, or technical specifications.

The tool uses JavaScript's String.fromCharCode() method, which can reconstruct characters from their UTF-16 code unit values. For characters within the standard ASCII range (0-127), this directly corresponds to their ASCII values.

How to Use This Tool

  • Enter or paste the sequence of numerical codes into the "Enter ASCII/Unicode Codes" input area.
  • Select the "Input Format" of your codes (Decimal, Hex, Binary, or Octal).
  • Choose the "Separator Between Codes" that is used in your input (e.g., Space, Comma, Newline, or a Custom one). If your codes are concatenated without separators (e.g., 48656C6C6F for Hex), select "None".
  • If you select "Custom" separator, an input field will appear for you to type your specific custom separator.
  • The corresponding text will be generated automatically in the "Output Text" area as you type or change options. You can also click "Convert to Text".
  • Use the "Copy Text" or "Download Text" buttons to save your result.

Note on "None" Separator: When "None" is selected, the tool assumes fixed lengths for non-decimal codes (2 for Hex, 8 for Binary, 3 for Octal, primarily for the 0-255 character range). Using "None" with decimal codes is less reliable unless your decimal codes are consistently padded to a fixed width (e.g., 3 digits for 0-255). It's generally recommended to use a separator for decimal inputs.

All conversions are performed client-side in your browser.

Frequently Asked Questions

What numerical formats can I input?

You can input character codes in Decimal (base 10), Hexadecimal (base 16, e.g., 4A or 0x4A - prefix is ignored), Binary (base 2, e.g., 01001010), or Octal (base 8, e.g., 101 or 0101 - prefix is ignored).

How should the input codes be separated?

You can use spaces, commas, newlines, or a custom separator of your choice. If your codes are directly concatenated (e.g., 48656C6C6F for "Hello" in Hex), select "None" as the separator. For "None", the tool assumes standard code lengths for Hex (2 chars), Binary (8 chars), and Octal (3 chars) primarily for the 0-255 ASCII range. Decimal with "None" is not recommended unless your codes are padded.

What character set does this tool support?

The tool uses String.fromCharCode() which works with UTF-16 code units. This means it can correctly convert standard ASCII (0-127) and also many common Unicode characters (up to 0xFFFF, the Basic Multilingual Plane). For Unicode characters beyond this (supplementary planes), `String.fromCharCode()` would need to be used with surrogate pairs, which this simple tool does not explicitly handle by parsing multi-code-unit sequences for a single character.

What if I enter an invalid code?

If a code in your input sequence is not valid for the selected numerical base (e.g., "G" in a Hex input, or "2" in a Binary input), or if it's outside the valid range for character codes, an error message will be displayed, and the conversion for that specific code might fail or be skipped.

Is my data processed on a server?

No. All conversions from ASCII/Unicode codes to text are performed directly in your web browser using JavaScript. Your input data is never sent to any external server.

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