CartoVoxel Minecraft Shape Maker

CartoVoxel Minecraft Shape Maker is a free browser tool for planning Minecraft block geometry and exporting coordinates. It suits builders who want to shape more than circles and can work from a layer guide, JSON, or a Java command function; it is not a fit for workflows that require schematic or Bedrock structure files.

Overview

The tool combines adjustable shape dimensions, material choices and filled-geometry controls with a live 3D preview and a grid of coordinates arranged by Y level. That makes it useful for planning structures before placing blocks, especially when a builder wants to inspect each horizontal layer. Generation, previews and downloads run locally in the browser after the page loads, and the tool says it does not upload shapes or settings.

Key features

Shape planning and inspection

Eleven shape types cover spheres, cylinders, cones, pyramids, domes, prisms, tori, ogive cones, hyperboloids, stars and spirals. Dimensions can be adjusted, geometry can be filled or left unfilled, and materials can be selected by color preset or Minecraft block ID. The 3D preview helps assess the overall form, while the layer view turns it into a stepwise coordinate plan. That combination is more useful for deliberate builds than a shape preview alone.

Export choices

Exports include a browser-readable layer guide, JSON containing coordinates and shape settings, and a Java .mcfunction. The function export is intended for Java creative worlds or datapack workflows. The tool does not produce Litematic, schem, Bedrock structure, mcworld or complete world files, so builders who need those formats will need another route.

Pricing

The Minecraft Shape Maker plan costs nothing. It includes all 11 shapes, live 3D and layer views, and JSON, layer-guide and Java .mcfunction exports. There is no paid tier or usage cap described for this plan, making it a straightforward choice for builders who can use its supported formats. Its main trade-off is export compatibility, not a stated quota or feature gate.

Platforms

CartoVoxel runs on the web, with no download or heavy software required. Shape generation and file downloads take place locally in the browser once the page has loaded, which keeps the shape data on the device according to the tool. CartoVoxel's privacy policy also says it may collect email and basic usage or device information; for third-party payment processing, it says full card numbers are not stored. It describes reasonable technical and organizational safeguards while noting that no internet service can guarantee absolute security.

Who it's for

This is a good fit for Minecraft builders who want to plan varied block forms, inspect coordinates level by level, or carry a Java-oriented design into a creative-world or datapack workflow. It is less suitable for players who need a ready-made Bedrock structure, a complete world, or a Litematic or schem file. For those users, the absent export formats are a decisive limitation.

Pros and cons

• Pros: Eleven shape types, adjustable dimensions, material selection and a filled-geometry toggle support more than basic circular planning.
• Pros: A layer-by-layer coordinate grid and three export formats give builders both a visual plan and usable output.
• Pros: The free browser tool processes shapes locally after page load and requires no install.
• Cons: No Litematic, schem, Bedrock structure, mcworld or complete world exports means it cannot directly serve several common build-sharing workflows.
• Cons: The .mcfunction export is specifically aimed at Java creative worlds or datapacks, so it is not a universal Minecraft export.

Alternatives

For a narrower circle-focused tool, Mcgic Circle Generator is free on web, Android and iOS, supports circles up to 512 × 512 blocks, and uses full blocks only. Choose it if cross-device access and circle sizing matter more than CartoVoxel's broader shape selection.

SchemForge Sphere Generator focuses on spheres, offers an interactive 3D voxel preview and private build history, and limits its free plan to one build each day; its 48-hour unlimited option costs $0.99, paid once. It is a better match when sphere-specific building history is useful and occasional paid access is acceptable.

Minecraft Shape Generator offers all shapes and blueprints for browser, desktop or mobile use on its free plan. Pick it if that stated device range and blueprint focus better suit your workflow.

Plotz is another free web option with no paid plans stated. MinecraftCircle Tools is a free web option. Better Plotz Modeller is a free HTML5 modeller for Minecraft. Pixel Circle Generator is a free web tool for circles, ellipses, arcs and spheres. MC Circle is a free, no-signup web option for circles from 3–128 blocks, with Java and Bedrock support.

Browse Minecraft Shape Generators for more options, or use Minecraft Map Repositories when you want maps rather than a shape-planning tool.

Verdict

Choose CartoVoxel Minecraft Shape Maker if you want a free, install-free way to plan a range of Minecraft forms, inspect their coordinates by layer and export JSON or Java commands. Its strongest case is the combination of broad shape coverage and practical coordinate views. Look elsewhere if your build depends on schematic, Bedrock or complete-world files.