Minecraft Cylinder Generator: Round Tower and Pillar Charts

Round towers and pillars

A cylinder has the same outline on every layer, so the chart is one circle repeated for the full height. The page still lists each layer, which is useful when a floor or a roof changes the first and last layers. Open Oval cylinder to give a width and depth that differ.

How the cylinder is calculated

A block belongs to the cylinder when its center lies inside the ideal shape. The page tests the center of every block in the bounding box and keeps the ones that pass, so the result is symmetric and the counts are exact for the size you type.

Hollow keeps only blocks that have at least one face open to the outside, which leaves a shell you can walk through with no gaps between blocks that share a face. A thick shell also keeps blocks that touch the outside only at an edge or a corner, which gives a sturdier wall. Filled keeps every block.

In the default hollow style there is no floor and no roof, so every layer is only the wall ring. Tick Closed floor or Closed roof to make the bottom or top layer a solid disc.

Building it layer by layer

Layer 1 is the bottom. Use the slider or the arrow buttons to step up, and compare each chart with the faint gray blocks, which are the layer you just placed underneath. The center lines run through the middle of the build, and the number at the end of each row is how many blocks to place in that row.

• Build one ring, copy it straight up, and only stop to change something at a floor or roof level.
• The block count per layer is the same for every wall layer, so multiply it by the height for a quick estimate.
• For a wide base with floors inside, plan a cylinder first and then add stairs or ladders in the interior.
• A thick shell also keeps blocks that meet the outside only at a corner, which makes the diagonal parts of the curve sturdier.