Minecraft Circle & Sphere Generator — Block-Perfect Shapes
Plan block-perfect circles, ellipses, spheres, cylinders, domes, arches, and spiral staircases. See exact block counts, navigate layers for 3D shapes, export relative coordinates, and share your setup with a link.
What's included
- Live block count per layer and for the full shape
- Arc modes for arches, half-circles, and single-quadrant builds
- Coordinate export with ~ relative positions and WorldEdit hints
- Circles and cylinders up to 256-block radius (512 blocks across)
- Spiral staircase planner with tread depth, direction, starting side, and optional center column
- PNG download and shareable configuration URLs
Use ~ for relative coords from your standing position.
Ctrl+scroll to zoom · drag to pan
Minecraft spiral staircase generator
Choose Stairs in the shape panel to plan the staircase one vertical step at a time.
Set the inner radius for the opening around the center and the outer radius for the edge of each tread. Steps per turn controls how quickly the staircase rotates, while total height controls how many blocks it climbs. You can switch direction, choose the side where the first step begins, and add a solid center support column.
Use the layer controls as a build order: layer 1 is the bottom step, layer 2 is one block higher, and so on. The all-layers export lists every relative coordinate in order, which is useful for survival builds and command-based construction in both Java and Bedrock Edition.
How to use it
- Pick a shape and set radius or dimensions.
- For arches, choose a partial arc (top half, quadrant, etc.).
- Toggle hollow for walls and rings, or solid for platforms.
- Step through layers on spheres, cylinders, domes, and spiral staircases.
- Set your build origin (X Y Z) and copy coordinates from the export panel.
Frequently asked questions
Why do small circles look like diamonds in Minecraft?
At radius 1–3, block grids cannot approximate a curve smoothly. Use radius 5+ for recognizable circles, or radius 10+ for smoother outlines.
How do I build a sphere layer by layer?
Select Sphere, set the radius, then step through layers from bottom to top. Each layer is a circle whose radius follows a true sphere formula.
How do I make an arch?
Use Circle or Ellipse with Arc set to Top half. Build only the shown blocks for a semicircular arch or tunnel mouth.
What does hollow vs solid mean?
Hollow shows only edge blocks — good for walls, rings, and tubes. Solid fills the interior — good for platforms and filled domes.
How accurate is the block count?
Counts are exact for the algorithm used: every displayed block is counted. The shape uses the standard x² + y² ≤ r² circle test on the block grid.
How do spiral staircases work in this tool?
Set inner/outer radius, total height, and steps per revolution. Each layer shows where to place blocks for that step. Build upward following the layer slider.
Can I use the exported coordinates in commands?
Yes. Set your build origin to ~ ~ ~ (relative to where you stand) or absolute coordinates. Copy the export panel and use setblock or WorldEdit with your chosen block.
Does this work on Bedrock Edition?
Yes. Circles are block-grid math — the same layouts work in Java and Bedrock. WorldEdit hints apply to Java; Bedrock users can build manually from the coordinate list.