Diameter of a Circle from Circumference Calculator

A circle is formed by combining a set of all points in a plane that are at a given distance from the centre point. The distance around a circle (i.e) its perimeter gives you the circumference. An online geometry calculator to calculate the diameter of a circle based on the circumference. Just input the circumference value in the input field and the diameter of a circle from circumference calculator will automatically update you with the circle diameter.

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D = C / π Where, D = Diameter C = Circumference


Calculate diameter of a circle from circumference of 20.72 cm.


D =20.72 / π
= 6.5954

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