Minecraft Circle Generator
Minecraft has no curves, so a circle is really a staircase of blocks you have to plan. This generator plots any diameter from 3 to 40 as a block grid — hollow for walls and rings, filled for floors and domes — and counts exactly how many blocks the shape needs before you start hauling materials.
Lay the widest row first, then work outwards row by row. Odd diameters give a single centre block, which is what you want for a tower; even diameters centre on a 2×2.
More tools
All toolsTriangulate the stronghold from two Eye of Ender throws
Open toolHow much coal, lava or kelp a stack of smelting actually needs
Open toolHow much damage your set actually stops, hit by hit
Open toolTicks to seconds, repeater delays and the day cycle
Open toolEvery food ranked by the hidden saturation buffer, not just hunger
Open toolAll 16 § colour codes and 6 formatting codes, with a live MOTD preview
Open tool