Minecraft Circle & Dome Generator

How to Use the Circle & Dome Generator

Building circles and domes in Minecraft is one of the most common challenges players face because the game world is made up of square blocks. Creating a smooth-looking circular shape requires knowing exactly which blocks to place on each row. This tool generates a pixel grid that shows you precisely which blocks to fill for any diameter from 1 to 256.

Select a shape type at the top. Circle (Outline) creates a hollow ring. Circle (Filled) fills the entire disc. Dome generates the top half of a sphere, and Sphere Shell creates a hollow sphere. For 3D shapes, use the layer slider to browse each horizontal slice from bottom to top. Each layer shows a 2D grid that you can follow to place blocks at that Y level.

Common Use Cases

Builders use circular shapes for towers, wells, fountains, arenas, domes for greenhouses, planetariums, cathedral ceilings and astronomical observatories. Sphere shapes appear in globe builds, death stars and decorative orbs. The block count display helps you gather the right amount of materials before starting a large build in survival mode.

The grid scales automatically based on the diameter. Small circles show detailed cells with visible borders so you can count blocks easily. Large circles compress the grid to fit on screen while still showing the shape clearly. Gold cells represent blocks to place, and dark cells are empty space.