Base Converter — Binary, Decimal, Hex, Octal

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About Base Number Converter

Convert Across Number Bases

Enter a value in one numeral system and watch the other bases update automatically. Supports negative numbers and large integers via BigInt.

Highlights

Four synchronized inputs: binary, decimal, hex, and octal.
Input validation to catch invalid characters per base.
Copy all representations at once for documentation.

Perfect For

Developers working with bit masks or memory offsets.
Computer science students studying base arithmetic.
Security and networking pros translating numeric IDs.

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