Circle Calculator

A circle is the set of all points in a plane at a fixed distance, called the radius, from a given point, the center. The Radius of the circle is the distance from the center of the circle outwards. The Diameter of the circle goes straight across the circle, through the center. The Circumference is the distance once around the circle. This online circle calculator allows you to calculate the area, diameter, circumference and sector area of a circle.

Circle Calculator - Calculate Area, Diameter, Circumference and Sector

circleDiameter of Circle : [ 2r ]

circleArea of Circle[πr² ]

circleCircumference of Circle : [2πr]

circleArea of Sector : [ ½×arc×(angle in degree) ]

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