A binary calculator is a tool used to perform arithmetic operations on binary numbers. Binary numbers are a base-2 numeral system used in computing and digital electronics. Unlike the decimal system, which uses ten digits (0-9), the binary system uses only two digits (0 and 1).

A binary calculator typically has a user interface that allows the user to input binary numbers and select the type of operation to perform (addition, subtraction, multiplication, or division). The calculator then performs the calculation and displays the result in binary format.

For example, if the user inputs the binary numbers 1010 and 1101 and selects the addition operation, the calculator will add the two numbers and display the result, which is 10111 in binary format.

Some binary calculators may also include additional features such as bitwise operations (AND, OR, XOR), decimal to binary conversion, and binary to decimal conversion.