Circle Area Online Calculator (3 ways)

This online circle area calculator will help you calculate the area of a circle. The solution can be found by three different methods.
Using this calculator, you can get a detailed step-by-step solution with an explanation and output of formulas.

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A circle (circle) is a geometric figure on a plane, all points of which are equidistant from a given point (the center of the circle).
Circle area formula The formula for the area of the circle through the radius where R is the radius of the circle

A circle (circle) is a geometric figure on a plane, all points of which are equidistant from a given point (the center of the circle).
Circle area formula Formula for the area of a circle through diameter where d is the diameter of the circle