Quick answer
Set the diameter below and the generator draws a buildable block pattern immediately. Copy the row plan or mirror one quadrant in your world.
Build your circle
How to use this generator
Enter the width in blocks. Odd widths have one center block; even widths center between four blocks. Set wall thickness to 1 for a thin outline, or choose Filled for a platform.
- Mark the four farthest points in your world.
- Build rows from the displayed grid, top to bottom. Each █ is one placed block; each · is empty space.
- Use the Copy row plan button for a text layout you can keep beside the game.
Best dimensions for domes and towers
| Project | Starter diameter | What to build |
|---|---|---|
| Small tower | 11–15 blocks | Trace the outline, then stack rings of the same width. |
| Large tower | 21–31 blocks | Start with a 2–3 block wall thickness for readable curvature. |
| Dome base | 25–41 blocks | Build the base circle, then shrink later rings gradually. |
These are design suggestions. A dome is a series of circles at different heights, not one circle repeated unchanged.
Common questions
Why does it look jagged?
Square blocks only approximate a curve; increasing the diameter smooths the silhouette.
Does the generator place blocks in game?
No. It produces a visible grid and copyable row plan for manual building.
Sources and review
Reviewed 12 October 2026. Primary reference. Confirm live codes, prices, patch notes and account rules before publication.