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ASCII Converter

Convert text to ASCII character codes in decimal, hex, binary or octal and back, with a full character table.

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How to use the ASCII Converter

  1. 1

    Choose a direction and a number base.

  2. 2

    Type text or paste character codes.

  3. 3

    Copy the result or look up each character in the table.

Frequently asked questions

What about characters outside ASCII?

ASCII covers codes 0 to 127. Other characters, such as é or emoji, are shown with their Unicode code point, which is the same number for the ASCII range.

Which separators can I use when decoding?

Spaces, commas, semicolons or line breaks between codes. Prefixes like 0x, 0b and &# are ignored.