Binary ↔ Text Converter

Convert text to binary (0s and 1s) and back. Every character is represented as its 8-bit binary equivalent. Runs entirely in your browser.

Binary Converter Tool
Client-Side — 100% Private
100% Private

Conversion runs entirely in your browser. No text is uploaded to any server.

Flexible Options

Choose your byte separator (space, dash, none, newline) and bit width (8 or 16-bit) for full control.

Unicode Support

Supports full UTF-16 character encoding for emoji and international characters.

Error Validation

Instantly catches invalid binary input, telling you exactly where the problem is.

What is Binary Encoding?

Binary (base-2) is the foundational number system of all digital computers. Every character in text is stored as a number (its Unicode/ASCII code point), and that number is then represented in binary — a sequence of 0s and 1s.

For example, the letter A has the ASCII/Unicode value 65, which in 8-bit binary is 01000001.

Binary encoding is used in:

  • Computer science education and digital logic design
  • Low-level network protocol analysis
  • Steganography and data puzzles
  • Debugging binary file formats
Frequently Asked Questions

Standard ASCII characters use 7 or 8 bits. Unicode characters (which cover all languages and emojis) can require up to 32 bits. This tool uses JavaScript's default UTF-16 encoding, meaning most characters use 16 bits.

By default, bytes are separated by a space for readability. You can change this to a dash, newline, or no separator using the options above the converter.

The binary input must consist only of 0s and 1s. Each group of bits (byte) must be 8 or 16 bits long depending on your selected bit width. Any other characters will cause a validation error.