This free online binary calculator adds, subtracts, multiplies, and divides two binary numbers, showing the result in both binary and decimal. It's useful for students, programmers, and anyone working with base-2 arithmetic.
How to Use the Binary Calculator
Enter a binary value (only 0s and 1s) in the "Binary Number 1" field.
Select an operation: addition (+), subtraction (−), multiplication (×), or division (÷).
Enter the second binary value in the "Binary Number 2" field.
Click "Calculate" to see the result in both binary and decimal, plus a remainder for division.
Frequently Asked Questions
It parses both binary strings into decimal numbers, performs the selected operation on the decimal values, then converts the result back to binary. For example, 1010 (10) + 0011 (3) = 1101 (13).
Only strings made up entirely of 0s and 1s are valid. Any other character, or an empty field, triggers "Invalid input! Please enter valid binary numbers (only 0s and 1s)."
Division by zero is not allowed, so if Binary Number 2 evaluates to 0 the calculator shows "Invalid input! Division by zero is not allowed." instead of a result.
Yes, it's completely free with no sign-up required.