Positional notation represents the same integer with different digits
Each place contributes its digit multiplied by a power of the selected base. CalcOS parses the complete integer with arbitrary-precision arithmetic, then emits its exact representation in the destination base.
255₁₀ = 11111111₂ = 377₈ = FF₁₆
Explicit scope
This converter supports signed whole integers in bases 2, 8, 10, and 16. It intentionally excludes fractions, floating-point encodings, Roman numerals, and written number names because those require different representation contracts.
Input rules
Binary accepts 0–1, octal accepts 0–7, decimal accepts 0–9, and hexadecimal accepts 0–9 plus A–F. Optional underscore separators are ignored.