Binary Calculator
Add, subtract or multiply two binary numbers.
Quick answer: enter your details below and click Calculate — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
B
Developer
Enter your details below.
How to use
- Enter the first binary number using only 0 and 1.
- Enter the second binary number.
- Choose Add, Subtract or Multiply and press Calculate.
About this tool
Binary is the base-2 system computers use, with only the digits 0 and 1. This tool checks that both inputs are genuine binary numbers, performs the chosen operation, and shows the result in binary with its decimal value for checking. It works on whole binary numbers; fractions are not supported, and very long inputs may lose precision. A negative subtraction result is shown with a minus sign in front of the binary digits.
Frequently asked questions
Can I enter a number containing 2?
No. Binary only allows 0 and 1, so any other digit is rejected with an error.
What happens when subtraction goes negative?
The result is shown with a minus sign in front of the binary digits, together with the negative decimal value.