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 or a radius to the …

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, which is a …

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.

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 the edge, use the formula …

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 using the …

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.

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 = πr², …

1 day ago · Calculate circle area instantly using radius, diameter, or circumference. Step-by-step solutions with π formulas. Free tool with real-world examples.

Learn how to calculate the area of a circle using simple formulas, examples, and real-life applications. Includes step-by-step explanation with π.

This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.