Number Base Converter (Bin / Oct / Dec / Hex)

Number systems with different bases are fundamental to computer science and programming. This converter handles the four most common bases:

- Binary (base 2) — the language of computers, using only 0 and 1 - Octal (base 8) — common in Unix file permissions (chmod 755) - Decimal (base 10) — standard human number system - Hexadecimal (base 16) — compact representation for binary, used in colors, memory addresses, and binary files

Type a number in any base and all other representations update in real-time. The tool also shows the 32-bit binary representation, two's complement, and byte count — useful for low-level programming.

Supports very large numbers using JavaScript's BigInt, so there's no overflow at 32-bit or 64-bit limits.