Adjust the diameter using the slider or buttons. For ovals, switch to Oval mode and set a different width and height. Choose a block colour to preview your build visually, then hit Generate.
Each square on the grid represents one Minecraft block. Filled squares = place a block. Empty squares = leave empty. Use this for towers, domes, arenas, wells, or any curved Minecraft structure.
Click "Copy as Text" to copy the full grid pattern to your clipboard. Paste it into notes and follow it block by block in-game. Works for all sizes from 5×5 to 100×100.