The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways — no matter if you're looking for an area-to-radius calculator …

See How to Calculate the Area below, but first the calculator: Enter the radius, diameter, circumference or area of a Circle to find the other three.

Although often referred to as the area of a circle in informal contexts, strictly speaking, the term disk refers to the interior region of the circle, while circle is reserved for the boundary only, …

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.

Oct 25, 2023 · What is the Area of a Circle The area of a circle is the space occupied by the circle in a two-dimensional plane. It is expressed in square units such as m 2, cm 2, etc. The shaded …

Dec 9, 2025 · Area of a Circle: A Complete Guide The Knowledge Academy 09 December 2025 The Area of a Circle is the space enclosed within its boundary, calculated using the formula A …

Area of a circle The area of a circle is the plane region bounded by the circle's circumference. The region shaded in gray inside of circle A above is its area. The area of a circle can be found …

Calculate area of circle instantly using radius, diameter, or circumference. Free area of circle calculator with step-by-step solutions and visual examples.

Aug 1, 2025 · Calculate the area, circumference, radius and diameter of circles. Find A, C, r and d of a circle. Given any 1 known variable of a circle, calculate the other 3 unknowns. Circle …

Oct 29, 2025 · You can find the area of a circle using the radius, the diameter, or the circumference. To find the area using the radius, or the length from the center of the circle to …