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Text to Binary Cipher

Convert text into 8-bit binary groups with a separator you choose, and decode them back.

Text to binary cipher

No text converted yet.
Each byte becomes eight binary digits, so one plain ASCII character gives one group of eight and accented letters give two or more.

How to use the Text to Binary Cipher

  1. Choose whether you want text to binary or binary to text.
  2. Pick the separator that suits where the output is going.
  3. Copy the result, or send it back through the tool to check it.

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Frequently Asked Questions

Common questions about the free online text to binary cipher.

Type your text in the box and the tool writes each byte as eight binary digits. Choose a separator if you want the groups split apart.
A byte holds eight bits, and binary shows every bit as a zero or a one. Plain ASCII characters take one byte, so they need eight digits.
Switch to the binary to text mode and paste the digits. Separators are ignored, but the total count of digits must be a whole number of bytes.
A space is easiest to read, a comma is handy for code, a new line puts one byte per line, and no separator gives the shortest output.
Yes. Text is encoded as UTF-8 first, so an emoji becomes four bytes and therefore four groups of eight binary digits.
Binary is just a way of writing numbers using only zeros and ones. ASCII is a table that gives each character a number, and UTF-8 extends that table.
No. The conversion runs in your browser, so nothing you type is transmitted, logged or stored anywhere.
Yes. The tool is completely free, needs no account, and there is no limit on how much text you convert.

Last updated: October 10, 2026