Pick the footprint
Use odd numbers for a single center block, or even numbers when your build needs a two-block center line. Circles stay locked to equal width and height.
Semicircle blueprint tool
Minecraft half circle generator for arches and domes.
Start with a half circle pattern, adjust the diameter, preview the block grid, and download a PNG blueprint for arches, roofs, bridges, and curved walls.
Blocks
72
Size
31 x 31
Center
15 / 15
Follow the outline
Place only the colored blocks for an outline build, or switch on Filled mode when you need a floor, roof, arena base, or large pixel-art shape.
Export the blueprint
Download the grid as a PNG and keep it beside your game window, send it to a friend, or add it to your build notes.
Circle guide
How to build a half circle in Minecraft
A Minecraft half circle is the top half of a pixel circle. Pick the full diameter first, then build only the upper rows shown in the blueprint.
Best uses for half circles
Half circles work well for arches, bridge supports, domed roofs, tunnel mouths, windows, gates, and organic terrain outlines.
Perfect circle source
The semicircle is generated from the same full-circle math, so the curve matches a perfect Minecraft circle pattern.
Choose the right diameter
Odd diameters give a clear center column. Even diameters are useful when the arch needs a two-block middle span.
Switch to full circles
Use the main circle generator when the build needs a complete tower, arena, floor, portal ring, or circular base.
Explore related Minecraft circle tools
Related Minecraft tools
Choose the right circle workflow
Minecraft Circle Generator
Return to the main visual blueprint tool for full circles, ovals, domes, and pixel-perfect block charts.
Minecraft Circle Command Generator
Learn when commands can build a circle automatically, and when a blueprint, schematic, or datapack is the better option.
Minecraft 3D Circle Generator
Preview simple layered 3D circles by radius, with each Y level shown as a normal Minecraft circle grid.
Built for Minecraft players
Fast planning for survival bases, megabuilds, and pixel art.
Instant preview
Every input updates the blueprint immediately, so you can test sizes before committing resources.
Survival-friendly counts
The block counter helps you estimate materials before a long mining or gathering session.
PNG export
Save the exact grid with the current material color and optional grid lines.
Free forever
MCCircle does not require accounts or subscriptions. Future monetization is planned through lightweight ads.
Minecraft circle generator FAQ
How accurate is the circle pattern?
The generator maps an ellipse equation onto Minecraft's square block grid, then keeps the outer edge blocks for the outline. It is tuned for practical building rather than vector-perfect drawing.
Should I enter radius or diameter?
The tool uses width and height as the full diameter. If you know the radius, double it and add one when you want a single center block. Common 9x9, 11x11, 15x15, and 21x21 layouts are listed in the Minecraft Circle Size Chart.
Do even-number circles work in Minecraft?
Yes. Even sizes create a two-block center line instead of one exact middle block, which is useful for many symmetrical builds. Common 9x9, 11x11, 15x15, and 21x21 layouts are listed in the Minecraft Circle Size Chart.
Can this make half circles and semi circles?
Yes. Choose Half Circle for arches, domes, bridge curves, and other semicircle builds, or open the dedicated Minecraft Half Circle Generator.
Can Minecraft commands generate the circle automatically?
Small circles can be built with repeated setblock commands, but larger circles are usually easier to build from a blueprint, schematic, or datapack. Compare both workflows in the Minecraft Circle Command Generator.
Can I use this for survival builds?
Yes. The block count and PNG export are designed for survival planning, where you need to know roughly how many visible blocks to gather before starting.
Do players need an account?
No. The tool is free and works in the browser without login, registration, or payment.