Calculate the Area of a Circle

This will calculate the area of a circle based on its radius.
ft
in
Area of a 10′6″ radius circle
346.36square feet
49,876square inches
32.178square meters
321,780square centimeters
(results may be rounded)

Area of a Circle Formula

The area of a circle is pi times the square of its radius.

Area = π * Radius2

Radius of a Circle

The radius of a circle is the distance from the center to any edge. It is half of the diameter.

Radius