Surface Area of a Circle Calculator

The circle is the three-dimensional object with no edges. Radius is the distance from the center to the inner edges of the circle. The area of a circle can be defined by knowing the number of square units that can fit inside that circle and if each square inside has an area of 1 cm². The surface area of the sphere and circle, both were same, which is 4 π r². Use our online surface area of a circle calculator to find the circle surface area just by knowing the radius value.

The circle is the three-dimensional object with no edges. Radius is the distance from the center to the inner edges of the circle. The area of a circle can be defined by knowing the number of square units that can fit inside that circle and if each square inside has an area of 1 cm². The surface area of the sphere and circle, both were same, which is 4 π r². Use our online surface area of a circle calculator to find the circle surface area just by knowing the radius value.

Code to add this calci to your website

Just copy and paste the below code to your webpage where you want to display this calculator.

Formula:

Surface Area = 4 Π r² Where, r = Radius