Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Type in any base and see all the others update live.
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Hexadecimal—
About number bases
A number base (radix) is how many digits are used to represent values: binary uses 2, octal 8, decimal 10, and hexadecimal 16. Programmers convert between them constantly — hex for colors and memory, binary for bit masks, decimal for humans. This converter parses your input in the base you choose and renders it in every other base, entirely in your browser.