The Binary Calculator is a free online tool that lets you perform arithmetic operations — addition, subtraction, multiplication and division — directly with binary numbers (base-2). It also converts between binary, decimal, octal and hexadecimal representations, making it an essential resource for students, programmers and digital electronics engineers.

Working with binary arithmetic by hand is error-prone and time-consuming. This calculator handles the math instantly and shows the step-by-step working so you can learn the process, not just get the answer.

How to Use the Binary Calculator

• Enter the first binary number in field 1
• Select the operation: +, -, ×, ÷
• Enter the second binary number in field 2
• Click Calculate — get the binary result plus decimal, hex and octal equivalents

Features

• Supports 8-bit, 16-bit and 32-bit binary numbers
• Shows step-by-step workings for learning purposes
• Handles two's complement for negative number arithmetic
• Instant binary-to-decimal and decimal-to-binary conversion

Ideal for computer science coursework, programming interviews, digital logic design and understanding how computers process numbers at the hardware level. Free, no login required.