Circle Calculator - Radius, Diameter, Circumference, Area
In geometry, a circle is a straightforward closed shape.
To be more precise, it is a collection of all points on a plane that are equally spaced from the center.
Another way to describe it is as a curve that a point traces, with the distance from a point staying constant as the point advances.
Attention: Please provide any value below to calculate the remaining values of a circle.
Calculator
Result
Note: This calculator uses JavaScript. If you have JavaScript turned off or have problems using the calculator, use the formulas found in the corresponding article in the blog section.
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