Free online area of a circle calculator which helps you calculate the are of any circle , given its radius. Supports many different metrics such as in, ft, yd, mm, cm, meters, etc. The area of a circle calculator will compute the surface of a circle using a radius or a diameter. The area of a circle is the space enclosed within the boundary of a circle. It is calculated using the formula A = πr^2 , where 'r' is the radius of the circle. It is measured in square units. The area of a Circle is the measure of the two-dimensional space enclosed within its boundaries. It is mostly calculated by the size of the circle 's radius which is the distance from the center of the circle to any point on its edge. The area of a circle is proportional to the radius of the circle .
