Astroworld Circle & Dome Generator vs SchemForge Sphere Generator

Astroworld Circle & Dome Generator is a free web tool for planning Minecraft structures with pixel grids. It generates circle outlines, filled circles, domes and sphere shells from whole-block diameters between 1 and 256. The selected shape’s total block count appears before construction. Gold cells indicate blocks to place, while dark cells indicate empty space; large grids are compressed to fit the screen. A layer slider lets you inspect dome and sphere-shell builds one layer at a time. The page says block positions are calculated in your browser from the diameter entered. You can embed the generator in a website or server wiki with an iframe and set its width, height and theme. The free plan costs nothing, with no sign-up and no ads. It is intended for Minecraft builders planning towers, arenas, greenhouses, planetariums and spheres.

SchemForge Sphere Generator is a browser tool for building Minecraft spheres with custom width, height, and depth, up to 256 blocks. It shows exact Y layers in a top-down guide that marks placed blocks and the previous layer, alongside a rotatable 3D preview. Users can choose a filled sphere or a hollow outline; wall thickness applies only to outline mode. The 3D preview becomes simplified above 31 blocks. Exports include a PNG blueprint, a copied or downloaded layer, and Java Edition or WorldEdit commands. The tool guide suggests WorldEdit for a full sphere and Java Edition commands for layers that are manageable to build. Generation and exports run locally in the browser without an account, AI token, or credit. The Free plan costs nothing and includes one build every day. A 48-hour option costs 0.99 USD one time; Creator costs $3.99 a month, billed yearly at 47.88 USD, with fair-use safeguards. Java Edition exports may require in-game editing for some mod or server configurations.