Minecraft Circle Generator & Blueprint Builder
Enter a diameter, radius, width, or height to produce a block-by-block blueprint. The first screen stays focused on inputs, preview, counts, and export actions. The blueprint updates instantly as you edit values.
- Even footprint: the center is between four blocks, so mark the 2×2 center area before mirroring.
Row Segments (top to bottom)
| Z (row) | X start | X end | Length | Blocks | Visual |
|---|---|---|---|---|---|
| -8 | -3 | 2 | 6 | 6 | |
| -7 | -5 | 4 | 2 + 2 | 4 | |
| -6 | -6 | 5 | 2 + 2 | 4 | |
| -5 | -7 | 6 | 2 + 2 | 4 | |
| -4 | -7 | 6 | 1 + 1 | 2 | |
| -3 | -8 | 7 | 1 + 1 | 2 | |
| -2 | -8 | 7 | 1 + 1 | 2 | |
| -1 | -8 | 7 | 1 + 1 | 2 | |
| 0 | -8 | 7 | 1 + 1 | 2 | |
| 1 | -8 | 7 | 1 + 1 | 2 | |
| 2 | -8 | 7 | 1 + 1 | 2 | |
| 3 | -7 | 6 | 1 + 1 | 2 | |
| 4 | -7 | 6 | 2 + 2 | 4 | |
| 5 | -6 | 5 | 2 + 2 | 4 | |
| 6 | -5 | 4 | 2 + 2 | 4 | |
| 7 | -3 | 2 | 6 | 6 |
Odd vs Even Center
Has one exact center block. Perfect symmetry around center.
Center is between middle blocks. Mark the shared center line or 2×2 area before mirroring.
Common diameters
Even footprints center between blocks; odd footprints use one center block. Mixed oval footprints use a center line on only one axis.
Fast blueprint workflow
- Choose Circle, Oval, Sphere, or Dome.
- Enter the full size before collecting materials.
- Check the center guide and row or layer table.
- Copy rows, download PNG/SVG/CSV, print, or share the current setup.
Outputs you can use immediately
- Canvas preview with pan, zoom, center lines, axes, and optional row labels.
- Row segments and block counts generated from the same current blueprint.
- PNG, SVG, CSV, print sheet, copy actions, and share URL for the active settings.
Before you build
- Odd footprints start from one center block; even footprints start from shared grid lines.
- For 3D shapes, finish the current layer before moving to the next layer.
- Use CSV or selected-layer print for large spheres and domes.
Popular blueprint tasks this page handles
- row-by-row Minecraft circle generatorUse row segments instead of copying a screenshot by eye.
- Layer-by-layer sphere generatorSplit large 3D builds into buildable Y layers.
- Minecraft dome blueprint with cap heightPlan roofs and observatory-style domes with selected layer output.
- Minecraft block count calculatorEstimate blocks, stacks, and shulker-style totals from the active blueprint.
FAQ
Does the blueprint update automatically?
Yes. Preview, counts, row segments, and export payloads update as soon as you edit a value.
Why can circles differ between tools?
Block generators use different inclusion rules. BlockLayer uses a block-center approximation and labels center parity so the build is reproducible.
Can I use this while building?
Yes. Companion Mode gives previous/next row controls, row copy, and done marking for a second screen.