Number Base Converter (Binary, Octal, Decimal, Hex)
Convert arbitrarily large integers between binary, octal, decimal, hexadecimal and any base from 2 to 36.
How to use the Number Base Converter
- Enter or select: Number, Input base, Extra output base (2β36).
- Fill in what you know of: Custom input base (2β36) β leave the unknown empty.
- The results (Binary, Octal, Decimal, Hexadecimal, Extra base, Bit length) are calculated instantly as you type.
- Use βCopy linkβ to share the calculation with the same input values.
Formula
- N = Ξ£ dα΅’ Β· bβ±
About this tool
Uses arbitrary-precision integers, so very large numbers convert exactly.