Minecraft Circle Generator

Odd diameters have one true center block, which makes planning from a middle point (a beacon, a fountain) natural. Even diameters center on a 2×2 — fine for symmetric builds like square-based towers. If you're circling something that exists, count its width and match parity.

Exploit symmetry: every circle repeats 8 ways. Build one-eighth of the outline following the chart, then mirror it across the center lines (the teal guides). Marking the four cardinal points first keeps big circles from drifting.

A dome is a stack of shrinking circles: generate the chart for each layer's diameter (a hemisphere's layers follow the same circle math vertically) and build them concentrically. Many builders generate every diameter from the base down to 3 and work up layer by layer.

Anywhere squares approximate curves: Terraria, pixel art, cross-stitch, LEGO baseplates, Perler beads. It's the classic midpoint-circle rasterization, which is the same problem in every medium.