Sphere Calculator is an easy to use, simple, small application that can show you where to place blocks to make circles and/or spheres.
To use Sphere Calculator, enter a diameter for the sphere you want to build. Hit Draw, and Sphere Calculator will show the block placement for the first layer of the sphere.
Click the Next Layer and Previous layers to move between layers as you complete them. You can also enter a layer number and hit draw to jump to that layer.
