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.

Calculation

1. enter the diameter of a circle
2. number of decimal places required in results
3. number of digits after the decimal point

Results

1. radius of the circle
2. the area of the circle
3. the perimeter of the circle (circumference)
4. side of the square's length
5. perimeter of the square

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

Area

Area = length * length

The square side length (calculated from the circle's area)

side length = √ (A)

where A = the area of the circle

Perimeter

perimeter = length * 4