Text to Binary Converter Online

Convert any text to its binary representation instantly in your browser. This free tool runs entirely client-side — no data is sent to any server.

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Text ↔ Binary Converter

Convert text to binary, hexadecimal, octal, or decimal — and back. Supports full Unicode via UTF-8 encoding.

Text

Binary

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Quick Reference — Text Encoding

How it works: Each character is first encoded to bytes using UTF-8, then each byte is represented in the selected number base (binary, hex, octal, or decimal).

Binary (Base 2): Uses digits 0 and 1. Each byte is 8 bits (e.g., "A" = 01000001). Fundamental to how computers store data.

Hexadecimal (Base 16): Uses 0-9 and a-f. Each byte is 2 hex digits (e.g., "A" = 41). Common in color codes, memory addresses, and debugging.

Octal (Base 8): Uses digits 0-7. Each byte is up to 3 octal digits (e.g., "A" = 101). Used in Unix file permissions.

Decimal (Base 10): Standard numbers 0-255 for each byte (e.g., "A" = 65). Same as ASCII values for the basic Latin alphabet.

Unicode support: Non-ASCII characters (emoji, CJK, etc.) produce multiple UTF-8 bytes. For example, "hello" in Chinese (你好) produces 6 bytes.

What is binary code?

Binary code represents data using only two digits: 0 and 1. In computing, each character of text is stored as a sequence of binary digits (bits). Using standard ASCII or UTF-8 encoding, each character maps to a specific binary number. For example, the letter 'A' is represented as 01000001 in 8-bit binary.

Common use cases for text to binary conversion

Text to binary conversion is used in computer science education to teach how computers store data, in programming challenges and CTF competitions, for encoding messages in binary format, and in understanding character encoding systems like ASCII and UTF-8. It is also useful for debugging data transmission issues at the bit level.

Frequently Asked Questions

How many bits represent one character in binary?

In standard ASCII, each character uses 8 bits (1 byte). Extended characters in UTF-8 encoding can use 2 to 4 bytes (16 to 32 bits) depending on the character.

Is binary text human-readable?

Binary consists only of 0s and 1s, which is not practical for humans to read directly. However, it is the fundamental language of all computers and digital systems, and understanding it helps with low-level programming and debugging.