ASCII Encode/Decode

What is ASCII Encode/Decode?

ASCII (American Standard Code for Information Interchange) is the foundational character encoding standard using values 0-255. This tool quickly converts between text and ASCII code sequences for serial debugging, protocol analysis, CTF challenges and low-level development.

Key Features

• Multiple bases: decimal, hexadecimal and binary output.
• Custom separators: space, comma, \x prefix, 0x prefix and more.
• Smart decode: auto-detects decimal, hex, binary and \x input.
• Extended ASCII: supports Latin-1 characters in the 0-255 range.
• Local processing: all conversion runs in your browser.

How to Use

1. Paste text or ASCII code sequences in the input box.
2. Choose output format (decimal/hex/binary) and separator.
3. Click "Encode" to convert text to ASCII codes, or "Decode" to restore text.
4. Click "Copy" to save the result.