Online Calculators since 2009
A Stadium is a two dimensional geometric shape consisting of a rectangle with semicircles at each end
It is also known as a Discorectangle
A Capsule is the three dimensional version of a stadium shape. You can use the Capsule Calculator here for three dimensional calculations.
Height = 2r (2 x radius)
Overall length = 2r+a (radius x 2 plus length of straight sides)
Area = π x r2 + 2ra (area of a circle formed by the two semicircles plus area of rectangle formed by length a x height)
Perimeter = 2(πr + a) (circumference of a circle formed by the two semicircles plus length of both sides[a] )
π = 3.141592654 to 9 decimal places
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