# Online calculator Complex number

This online calculator is designed to calculate the complex number multiplication, division, and square root problems.

## Calculator

## Formula

**Multiplication** = (a+bi) × (a+bi)

**Division** = (a+bi) / (a+bi)

**Square root:**

r = sqrt(a² + b²)

y = sqrt((r-a) / 2)

x = b / 2y

r1 = x + yi

r2 = -x – yi

This statistical complex number calculator is provided for your personal use and should be used as a guide only.