Binary Converter
DeveloperConvert between text, binary, hexadecimal, octal, and decimal formats. Multi-base number system converter.
Other Formats
What is a Binary Converter?
A binary converter translates data between text, binary (base-2), and hexadecimal (base-16) representations. Every character in text has a numeric ASCII or Unicode code point that can be expressed in binary (sequences of 0s and 1s) or hexadecimal (0-9 and A-F) notation.
Binary is the fundamental language of computers — every piece of data, from images to executable code, is ultimately stored as binary. Understanding binary and hex representations is essential for low-level programming, network protocol analysis, debugging memory dumps, and digital forensics.
Number Systems Explained
Binary (Base-2)
Uses only 0 and 1. Each digit is a bit. 8 bits form a byte. The letter "A" (ASCII 65) is 01000001 in binary.
Decimal (Base-10)
The standard human-readable number system using digits 0-9. Used for ASCII code points and general arithmetic.
Hexadecimal (Base-16)
Uses 0-9 and A-F. Each hex digit represents 4 bits, so one byte is exactly 2 hex characters. The letter "A" is 0x41.
Frequently Asked Questions
How do I convert text to binary manually?
Find each character's ASCII code (e.g., "A" = 65), then convert that number to binary (65 = 01000001). Separate each character's binary with a space for readability.
Why is hexadecimal used instead of binary?
Hex is more compact and human-readable. One hex digit represents 4 bits, so a byte is just 2 hex characters instead of 8 binary digits. This makes memory addresses, color codes, and data dumps much easier to read.
What is the ASCII table?
ASCII (American Standard Code for Information Interchange) maps 128 characters to numeric values 0-127. It includes control characters (0-31), printable characters (32-126), and is the foundation for modern text encoding like UTF-8.