Popular Minecraft build sizes
Every count below is produced by the same algorithms the generators use, so the numbers match the blocks you will actually place. Open any size for a ready-made blueprint with row-by-row instructions.
Flat rings and discs. The hollow count is a 1 block wall; the filled count is every block inside the boundary.
| Size | Dimensions | Hollow | Filled | Centre | Good for | Blueprint |
|---|---|---|---|---|---|---|
| 10 blocks | 10 x 10 | 28 | 80 | 2 x 2 centre | Fountains, silos and small round rooms | Open blueprint |
| 15 blocks | 15 x 15 | 40 | 177 | single centre block | Fountains, silos and small round rooms | Open blueprint |
| 20 blocks | 20 x 20 | 60 | 316 | 2 x 2 centre | Round houses, tower bases and farm plots | Open blueprint |
| 25 blocks | 25 x 25 | 68 | 489 | single centre block | Round houses, tower bases and farm plots | Open blueprint |
| 30 blocks | 30 x 30 | 100 | 716 | 2 x 2 centre | Round houses, tower bases and farm plots | Open blueprint |
| 40 blocks | 40 x 40 | 140 | 1,264 | 2 x 2 centre | Arenas, city walls and megabuild footprints | Open blueprint |
| 50 blocks | 50 x 50 | 172 | 1,976 | 2 x 2 centre | Arenas, city walls and megabuild footprints | Open blueprint |
| 64 blocks | 64 x 64 | 204 | 3,228 | 2 x 2 centre | Arenas, city walls and megabuild footprints | Open blueprint |
| 100 blocks | 100 x 100 | 304 | 7,860 | 2 x 2 centre | Arenas, city walls and megabuild footprints | Open blueprint |
Circle pages with full instructions
The most-requested circle diameters each have their own page with building advice.
How to choose a size
Small circles have very few blocks to work with, so they always look slightly angular. From about 15 blocks across the curve starts to read properly, and by 25 the outline looks genuinely round from ground level. Above 50 the shape is smooth but the material cost grows quickly — a filled 100 block disc is nearly 8,000 blocks.
Odd or even?
Odd diameters have one true centre block, which matters if you want a beacon, a pillar or a fountain jet in the middle. Even diameters have a 2 x 2 core, which suits doorways and 2-wide staircases. Neither is rounder than the other — pick by what goes in the middle.
Matching shapes together
A dome sits neatly on a tower when both use the same diameter, and the widest layer of a sphere is exactly the circle of the same size. Keep the diameter consistent across the circle, tower and dome generators and the parts line up without adjustment.
Need a different number?
These are the sizes people ask for most, but every generator accepts any value in its range — see all generators for the full list.