# Diameter of a Circle from Radius Calculator

A circle is a plane geometric shape where the distance from the center to the corner of the circle remains the same. The radius is the distance from the center outwards. A circle has about 80% of the area of a similar width square. Below given an online geometry calculator to calculate the diameter of a circle based on the radius. Just input the radius value in the input field and the diameter of a circle from radius calculator will update you with the resultant value.

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A circle is a plane geometric shape where the distance from the center to the corner of the circle remains the same. The radius is the distance from the center outwards. A circle has about 80% of the area of a similar width square. Below given an online geometry calculator to calculate the diameter of a circle based on the radius. Just input the radius value in the input field and the diameter of a circle from radius calculator will update you with the resultant value.

Code to add this calci to your website  #### Formula:

D = 2 × R Where, D = Diameter R = Radius

### Example:

Calculate diameter of a circle from radius of about 15 cm.

D = 2 x 15
= 30 cm.