Minecraft cylinder generator

Width, depth and height — the generator extrudes a circle into a block cylinder: a castle tower, a temple column, a farm silo, a factory pipe. Wall thickness or solid fill, in 3D at once, export to .litematic and .schem.

How it works

1. Set the dimensions with the sliders — the shape is recalculated instantly and shown in 3D.
2. Pick a block (some tools take two: main and secondary).
3. Turn on Layers to see the shape slice by slice — handy for building by hand.
4. Download .litematic for Litematica or .schem for WorldEdit.

Examples

• Tower 11×20
• Column 5×12
• Oval tower 21×11

FAQ

How do I make a tower with thick walls?

Set the thickness to 2–3 blocks: there is still room inside for stairs and rooms. For a solid column turn on Filled.

How do I build this without mods?

Open the schematic in the viewer, turn on Layers and place blocks layer by layer on the grid. With Litematica or WorldEdit the schematic is pasted in one go.

Why does the shape look stepped?

Blocks are whole, so every curve turns into steps — the game does the same. An odd size gives a clean centre block, an even size gives two.

Is it free, no sign-up?

Yes. Everything is computed in the browser; the file is built locally and never uploaded.

See also: Sphere & dome · Minecraft builder tools