Base Converter

Base Converter

Convert whole numbers between arbitrary radices for debugging, low-level formats, and teaching. One call returns the target base representation and the same value in the most common bases.

Capabilities

• Any base 2–36: Digits 0-9 then a-z for values 10–35; output uses lowercase letters.
• Unified view: Along with result in to_base, the tool always includes binary, octal, decimal, and hexadecimal forms of the signed value.
• Signed integers: A leading - applies to the entire parsed value; all representations preserve the sign.

Gotchas

• Letters above base 10: Bases greater than 10 use a–z for digit values 10–35; input is case-insensitive.
• Prefixes: Strips 0x when from_base is 16, 0b when from_base is 2, and 0o when from_base is 8 (case-insensitive). Other bases do not use these prefixes.
• Validation: Every digit must be strictly less than from_base; invalid digits raise a clear error.