Number Base Converter

Binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16), all kept in sync as you type in any one of them. These are the bases most commonly used in computing and networking, covering everything from low-level bit manipulation to human-readable decimal numbers and compact hexadecimal color codes. Type in any of the four fields and all the others update instantly, so you can work in whichever base is most natural for your task. This simultaneous conversion is faster than using a command-line calculator or converting one base at a time.

Yes — AND, OR, XOR, NOT and left/right bit shifts on two values, with the result shown across every base. Bitwise operations are fundamental to low-level programming, network masks, graphics, and cryptography, and this tool lets you visualize how they work step-by-step. Enter two numbers in any base, pick an operation, and see the binary representation with the operation highlighted and the result in all four bases. This visual approach makes understanding bitwise logic much easier than working through the math manually.

Yes. It uses BigInt, so large integers convert exactly without the rounding errors of normal floating-point numbers. Many calculators and programming languages lose precision with very large numbers due to floating-point representation limits. This tool uses arbitrary-precision integers (JavaScript's BigInt type), so you can convert numbers with hundreds of digits without any rounding. This is critical for cryptography, hashing, and other applications where precision over massive numbers is essential.