Circle Diameter Calculator
Easily calculate the diameter of a circle from its radius using our online calculator. Visualize the circle and understand the relationship between radius and diameter.
Enter Radius
Diameter Result
Visual Representation
Radius (r) is shown in blue, Diameter (d) spans across the circle.
Formula: $$ d = 2r $$
Understanding Circle Diameter
The diameter of a circle is a straight line that passes through the center of the circle and connects two points on the circumference. It is twice the length of the radius.
Formula: The relationship between the diameter (d) and radius (r) is given by the formula: $$ d = 2r $$.
Use Cases: Diameters are used in various fields such as engineering, construction, and design to specify the size of circular objects like pipes, wheels, and cylindrical containers.
For further reading, you can refer to resources like: Wikipedia - Diameter, or explore geometry textbooks for more in-depth explanations.