Binary, Octal, Decimal, Hex Calculator - Arithmetic & Bitwise Ops

Free binary, octal, decimal, and hex calculator. Enter two numbers in any base, pick an operator (add, subtract, multiply, integer-divide, modulo, AND, OR, XOR, left/right shift), and see the result shown in all four bases at once. Perfect for low-level programming, bit-manipulation, and computer-science coursework. Runs entirely in your browser. Binary, Octal, Decimal, Hex Calculator - Arithmetic & Bitwise Ops on 712 Tools runs entirely inside your browser using modern JavaScript APIs - no server ever sees your data. That means instant results, complete privacy, and no upload limits.

Whether you need to do arithmetic and bitwise operations in binary, octal, decimal, or hex - see the result in all four for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.