# Changing a Circle to a Square

Its like magic to change a circle into a square, click the button and poof there you have it!!

This calculator converts the area of a circle into a square with four even length sides and four right angles. The calculation is based on the area of the square being the same as the circle's area.

### Circle Formula's

**Radius**

R = D ÷ 2

where R = radius, D = diameter

**Area;**

A = π * D² ÷ 4

where A = area, π = 3.14159..., D = diameter

**Circumference;**

C = 2 * π * D ÷ 2

where C = circumference, π = 3.14159...., D = diameter

### Square Formula's

AreaArea = length * length

**Side Length**

length = √ (CA)

where CA = the area of the circle

**Perimeter**

perimeter = length * 4

### Circle to Square

#### Calculation

- enter the diameter of a circle
- number of decimal places required in results

#### Results

- radius of the circle
- the area of the circle
- the perimeter of the circle (circumference)
- side of the square's length
- perimeter of the square