Text to Binary Converter

Features

Understanding Text Encoding

At the lowest level, computers store all data -- including text -- as binary numbers (sequences of 0s and 1s). Text encoding is the system that maps human-readable characters to specific binary values. Understanding this mapping is fundamental to programming, networking, data processing, and cybersecurity.

ASCII Encoding

ASCII (American Standard Code for Information Interchange) is the foundation of text encoding. Developed in the 1960s, ASCII uses 7 bits to represent 128 characters: 26 uppercase letters (A-Z), 26 lowercase letters (a-z), 10 digits (0-9), 33 punctuation/symbol characters, and 33 control characters. For example, the letter "A" is encoded as decimal 65, binary 01000001, hex 41, and octal 101.

UTF-8 Encoding

UTF-8 is the dominant character encoding on the web, used by over 98% of all web pages. It is a variable-length encoding that uses 1 to 4 bytes per character. ASCII characters (code points 0-127) use exactly 1 byte, making UTF-8 backward compatible with ASCII. Characters outside the ASCII range use 2, 3, or 4 bytes with specific bit patterns to indicate the number of bytes in the sequence.

Number Base Systems

• Binary (Base 2): Uses digits 0 and 1. Each digit is a bit, and 8 bits make a byte. Binary is the native language of computers.
• Octal (Base 8): Uses digits 0-7. Each octal digit represents exactly 3 binary bits. Commonly used in Unix file permissions (chmod 755).
• Decimal (Base 10): Uses digits 0-9. The standard number system humans use daily. Byte values range from 0 to 255.
• Hexadecimal (Base 16): Uses digits 0-9 and letters A-F. Each hex digit represents exactly 4 binary bits, making it a compact way to represent binary data. Widely used in programming, color codes, and memory addresses.

Frequently Asked Questions