Browser-local BigInt math

Base Converter

Choose one input base, enter a value once, and get binary, octal, decimal, hexadecimal, and custom 2-36 output at the same time. Built for registers, masks, protocol fields, and log inspection.

Pure front-end, no upload

Input

Source

Choose an input base and click Convert. Empty input shows a friendly prompt.

Multi-output Results

Offline
This converter is built for development, hardware debugging, and operations work. It does not rely on external libraries or remote APIs. All parsing and formatting runs in browser memory, and integer conversion uses BigInt to avoid JavaScript 32-bit bitwise truncation.

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