How do I build a circle in Minecraft?

Approximate the curve with horizontal and vertical block runs that get shorter toward the diagonals. This generator computes the mathematically best approximation for any diameter so you can just copy the pattern.

What's the difference between thin and thick outlines?

Thin outlines connect blocks diagonally and use the fewest blocks; thick outlines guarantee every block touches the next one orthogonally - important for walls you want to walk on or seal against water.

Should I use an odd or even diameter?

Odd diameters have a single center block, which makes them ideal around a central feature like a beacon. Even diameters center on a 2x2 area and pair better with even-sized builds.

Can I generate spheres and domes?

Yes - switch to sphere mode and step through the horizontal layers. For a dome, simply build only the top half of the layers.

How many blocks does my circle need?

The tool counts outline and fill blocks for every shape and size, so you know exactly how much material to farm before you start.

Does this work for other block games?

Yes - the blueprints are pure pixel geometry and work in any voxel or grid-based game, from Minecraft to Terraria and beyond.

Circle Generator

Generate pixel-perfect circles, ellipses and spheres for your builds

Settings

Width

Height

Style

Grid numbers

Tip: The thick outline has no diagonal gaps, so you can walk along the wall. The thin outline uses the fewest blocks.

Preview

Blocks

32 × 32

Dimensions

Blueprints for round builds

Round shapes are the hardest part of building in a block world. This generator turns any diameter into a pixel-perfect block blueprint: circles, ellipses and full spheres up to 256 blocks, with thin, thick or filled outlines, block counts and a zoomable grid you can follow layer by layer while you build.

Circles, ellipses and spheres

Generate perfect circles, stretched ellipses with independent width and height, or complete spheres sliced into layers.

Up to 256 blocks wide

From tiny 3-block rings to monumental 256-block domes - large enough for any survival or creative project.

Thin, thick and filled modes

Choose classic thin outlines, fully connected thick outlines without diagonal gaps, or filled discs with block counts.

Layer-by-layer sphere view

Step through every horizontal slice of a sphere and build it layer by layer like a schematic.

Exact block counts

See how many blocks the shape needs before you gather materials - split by outline and fill.

Zoom, pan and grid guides

Navigate big blueprints with zoom and center guides, and count comfortably with highlighted axis lines.

How to build a perfect circle in Minecraft

1
Set the size
Enter the diameter - or width and height for an ellipse. Odd sizes give you a single center block, even sizes a 2x2 center.
2
Pick the outline style
Thin for classic circles, thick for walkable walls without gaps, filled for floors and ceilings.
3
Build along the grid
Follow the blueprint quadrant by quadrant - the symmetry means you only really need to count one quarter.

Frequently asked questions

How do I build a circle in Minecraft?: Approximate the curve with horizontal and vertical block runs that get shorter toward the diagonals. This generator computes the mathematically best approximation for any diameter so you can just copy the pattern.
What's the difference between thin and thick outlines?: Thin outlines connect blocks diagonally and use the fewest blocks; thick outlines guarantee every block touches the next one orthogonally - important for walls you want to walk on or seal against water.
Should I use an odd or even diameter?: Odd diameters have a single center block, which makes them ideal around a central feature like a beacon. Even diameters center on a 2x2 area and pair better with even-sized builds.
Can I generate spheres and domes?: Yes - switch to sphere mode and step through the horizontal layers. For a dome, simply build only the top half of the layers.
How many blocks does my circle need?: The tool counts outline and fill blocks for every shape and size, so you know exactly how much material to farm before you start.
Does this work for other block games?: Yes - the blueprints are pure pixel geometry and work in any voxel or grid-based game, from Minecraft to Terraria and beyond.