Given the radius and height of a cylinder and the desired width of each layer, this simple calculator calculates the width of each layer and the total area of the layers. For example, this could be used to make a cylinder out of a sheet of metal by stacking rectangular strips (and avoiding having to cut circles). Open this post and click the “calculate” button to see how it works.

Use any units but all units must be the same. Decimals are fine. The “done” checkboxes are for the user to keep track of which layers have been made.