About CircleGen
Last content review: 2026-10-26
What this site does
CircleGen is a free Minecraft circle generator. It turns any diameter from 5 to 256 blocks into a block-by-block pixel blueprint for circles, ovals, spheres, domes and arcs. Every blueprint works identically in Java Edition and Bedrock Edition, and everything on this site is free – no accounts, no paywalls.
How the generator works
The tool renders a discrete circle on the pixel grid: for a chosen diameter, every cell whose center distance from the middle falls in the half-block ring around the radius is marked as a block. That is the same family of math as the midpoint circle algorithm, and it is why odd diameters produce a clean, symmetric ring. Spheres and domes are built by stacking rings, one layer per slice, from the bottom up.
The methodology is documented by the following public references:
Editorial standards
Every blueprint on CircleGen is generated by the same discrete-circle algorithm described above. Block counts shown with each blueprint are checked against the generator. If you find an error, a block count that looks wrong, or a blueprint that does not match what you see in your world, corrections are welcome by email at ywbiong@gmail.com or through GitHub issues.
Who builds it
CircleGen is an independent project built by a Minecraft player and developer. The source code is open on GitHub, and you can get in touch via the contact page or by opening an issue on GitHub.
How CircleGen compares
Specs below come from each tool's own published documentation, checked October 2026. We list where the other tools are stronger too — the comparison is only useful if it is accurate.
| Tool | Shapes | Languages | Per-size pages | Exports | 3D preview | .schem |
|---|---|---|---|---|---|---|
| CircleGenpixelcircle.online | 7 | 11 | 3,179 | 5 | yes | no |
| Donat Studios Pixel Circle Generator | 2 | 1 | 1 | 2 | no | no |
| Godlike.Host Circle Generator | 4 | 1 | 1 | 2 | no | yes |
| Mcgic Circle Generator | 3 | 1 | 1 | 4 | yes | yes |
| Plotz | 6 | 1 | 1 | 0 | yes | no |
| Pixel Circle Generator (pixelcirclegenerator.com) | 4 | 1 | 1 | 3 | no | no |
Where the other tools are stronger
- Godlike.Host and Mcgic reach 512 blocks and export .schem files for WorldEdit. CircleGen caps circles at 256 blocks and does not export .schem.
- Plotz has building presets (wizard tower, lighthouse, snowman) and can print. CircleGen has neither.
- Donat Studios has been online since 2012 and its page carries a decade of user comments. CircleGen launched in August 2026.
A note on similarly named tools
This site is CircleGen at pixelcircle.online. It is not pixelcirclegenerator.com, which is a separate tool with a similar name and a smaller feature set — no 3D preview, no multi-language pages and no per-size blueprint pages. CircleGen has interactive drag-to-rotate 3D preview, 11 interface languages, 3,179 pre-rendered per-size blueprint pages, PNG, SVG, CSV, JSON and /setblock exports.
Full capability matrix
| Tool | Layer slicing | Build animation | World coords | Block count | Presets | |
|---|---|---|---|---|---|---|
| CircleGen | yes | yes | yes | yes | no | no |
| Donat Studios Pixel Circle Generator | no | no | no | yes | no | no |
| Godlike.Host Circle Generator | no | no | no | yes | no | no |
| Mcgic Circle Generator | yes | yes | yes | yes | no | no |
| Plotz | yes | no | no | yes | yes | yes |
| Pixel Circle Generator (pixelcirclegenerator.com) | yes | no | no | no | no | no |
Shape counts are the number of shape families each tool generates (CircleGen covers circle, oval, sphere, dome, arc, torus and ellipsoid). Export counts include image, vector, data and in-game command formats.