Number Base Converter
Convert between binary, octal, decimal, and hexadecimal — 100% local processing
How to use Number Base Converter
Select the input base, enter your number, and click Convert. Binary values are displayed in 4-bit groups for readability. Supports 0x, 0b, 0o prefixes.
Supported formats
Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16). Handles large numbers using BigInt. All conversion happens locally in your browser.