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Minecraft Minecraft Shape Calculator

Calculate the blocks and groups you need to build circles and rounded rectangles in Minecraft, with a zoomable grid preview and cell coordinates.

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How to Use

  1. Pick a shape: a circle or a rounded rectangle.
  2. Set the size (diameter, or width, height and corner radius), choose solid or hollow mode, and adjust the ring thickness for hollow shapes.
  3. Click Calculate to see the total number of blocks and how many groups (64 blocks each) you need.
  4. Inspect the preview: zoom in and drag to look around, hover a cell to see its coordinates, and follow the center guide lines when placing blocks.

Features

  • Pixel-perfect block layout using Minecraft's rounding rules
  • Hover any cell to read its coordinates and follow the center guide lines when building
  • Zoomable SVG preview with drag-to-pan to inspect every block up close
  • All calculations run locally in your browser - nothing is uploaded

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