Binary Arithmetic Calculator

Binary math with step-by-step

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About Binary Arithmetic Calculator

A binary arithmetic calculator that performs addition, subtraction, multiplication, and division on binary numbers. Shows carry/borrow chains, step-by-step computation, and converts results to decimal for verification. Supports signed (two's complement) numbers. All processing is client-side. Essential for computer science, digital logic, and low-level programming.

Binary Arithmetic Calculator Features

  • 4 operations
  • Carry/borrow
  • Decimal verify
  • Two's complement
  • Steps
Binary arithmetic follows the same rules as decimal, but with only 0 and 1. Addition: 0+0=0, 0+1=1, 1+1=10 (carry 1). Subtraction uses borrowing or two's complement. Multiplication is repeated shifting and adding. Division is repeated shifting and subtracting.

How to Use

Enter two binary numbers:

  • Numbers: Binary (0s and 1s)
  • Operation: +, −, ×, ÷
  • Result: Binary with decimal

Binary Rules

  • 0 + 0 = 0
  • 0 + 1 = 1
  • 1 + 1 = 10 (carry 1)
  • 1 + 1 + 1 = 11 (carry 1)

Two's Complement

For negative numbers: invert all bits and add 1. −5 in 8-bit: 00000101 → 11111010 → 11111011. This makes subtraction = addition of negative.

Step-by-Step Instructions

  1. 1Enter first binary number.
  2. 2Enter second binary number.
  3. 3Select operation.
  4. 4View binary result.
  5. 5Check decimal verification.

Binary Arithmetic Calculator — Frequently Asked Questions

How does binary subtraction work?+

Either borrow (like decimal subtraction) or convert to two's complement and add. 1010 − 0011: borrow method or add 1010 + 1101 (two's complement of 0011) = 0111.

Why do computers use binary?+

Transistors have two states: on (1) and off (0). Binary maps directly to electronic switches. All computation, storage, and communication fundamentally uses binary.

What is overflow in binary?+

When the result exceeds the bit width. In 8-bit unsigned: 255 + 1 = 0 (overflow). In signed: 127 + 1 = −128. This is a common source of bugs.

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