Minecraft circle schematic generator

What the circle kernel builds

Three layers, one on top of the other. The bottom is a filled disk of the palette’s floor block. The second layer is a ring one block wide in the wall block. The third layer is a ring of the fence block, so the edge has a low railing. With a stone brick palette that is stone, stone bricks, and stone brick wall. With oak it is planks and an oak fence. The radius is half the smaller of width and depth, minus one, which keeps the circle off the edge of the box.

That makes it useful as an arena, a fountain base, a plaza, a helipad, or a mob-spawn platform, and less useful if you want only a circle outline to trace. For an outline, place the hologram and remove the floor disk in Litematica with the edit schematic mode, or just build the ring.

Odd and even sizes

Minecraft circles are made of squares, so the shape depends on parity. An odd width gives one centre block; an even width puts the centre between four blocks. This kernel takes the integer centre, so even sizes sit a half block off. If you care about symmetry for a plaza or spawner, type an odd size such as 15 or 19.

Use it

Load the .litematic, then move the placement so the circle’s centre sits where you want it. The origin is the box’s minimum corner, not the centre of the circle. A circle does not need rotation. For a creative paste, download the .schem and follow the WorldEdit import steps. If you only want to fill the floor, the material list shows how much floor block you need.

Related shapes: a dome if you want a roof over the same footprint, a pyramid, or a tower. Java Edition only.