Free Minecraft planning tools
Circle and sphere generators with buildable plans, portal coordinate maths and beacon planning, all in your browser. No sign-up, nothing uploaded.
- 100% client-side math
- Java & Bedrock friendly
- Copyable build plans
The toolkit
- Minecraft Circle Generator
Pixel-perfect circles and ovals on the block grid, with build plans you can copy.
Most used - Sphere Generator
Layer-by-layer sphere and dome plans, with per-layer radii for clean builds.
- Nether Portal Calculator
Overworld and Nether coordinates at the correct 8:1 ratio, both directions.
- Beacon Calculator
Pyramid materials and effect range for every beacon level.
Planner
Why CraftCalc
- Standard algorithms, verified. The circle generator uses the midpoint circle algorithm; mechanics follow the game's documented values with sources on the methodology page.
- Everything runs locally. No uploads, no accounts, no tracking of what you plan.
- Built for actual builds. Copyable plans, layer-by-layer spheres, and honest notes on where small sizes stop looking round.
- Free, plain and fast. No interstitials, no sign-up walls, no watermarks.
Learn the methods
Who runs this site
CraftCalc is an independent, builder-run toolset, not affiliated with Mojang or Microsoft. Read the full story or check the methodology behind every number.