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 …

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, which is a …

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 …

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.

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 …

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 region …

May 8, 2024 · In math, it is important to be able to calculate the area of a shape (i.e. the total space that a shape takes up) by using a formula. When it comes to finding the area of a circle, you can easily …

The formula to find a circle's area $$ \pi $$ (radius) 2 usually expressed as $$ \pi \cdot r^2 $$ where r is the radius of a circle.

Jul 23, 2025 · In this article, we'll delve into five methods for calculating the area of a circle: using the radius, diameter, circumference, sector, and segment. Along the way, we'll cover the fundamentals of …