Number Base Converter
Convert numbers simultaneously between binary, octal, decimal, and hexadecimal online for free. Fast, interactive, and client-side.
Real-time multi-base number conversion. Type in any radix (Binary 2, Octal 8, Decimal 10, Hexadecimal 16, or custom bases 2-36) and all other formats update instantly.
How to use
- Type or paste a number into any base field (Binary, Octal, Decimal, or Hexadecimal).
- All other bases update instantly in real time with high-precision BigInt arithmetic.
- Click the Copy button next to any base to copy its representation.
Frequently asked questions
Does this converter support arbitrarily large integers?
Yes, JavaScript native BigInt is used, preventing standard 32-bit or 64-bit floating-point precision loss.