Choose the opening
Start with the clear doorway, road, or tunnel width. Pick the closest preset, then tune the rise before placing blocks.
Door, bridge, and tunnel blueprint tool
Minecraft arch generator for real building openings.
Choose a doorway, castle gate, bridge, or tunnel preset, then adjust the opening and copy the block-by-block arch outline.
Blocks
72
Size
31 x 31
Center
15 / 15
Stacks (64)
1 + 8
Circumference
97.4
Mark center and spring line
Place the center marker and both side supports first. Build the curve outward from the top so both halves stay mirrored.
Add structural thickness
Repeat the outline one or two blocks behind it, connect the layers, and add the wall, bridge deck, or tunnel shell above.
Circle guide
How to use an arch blueprint for doors, bridges, and tunnels
An arch is a semicircle used as a structural opening. Choose the clear span first, match the rise to the build, and add thickness after the front outline is correct.
Doorway arches
Use a 7-wide opening for compact entrances, then frame it with stairs, slabs, or contrasting blocks.
Bridge arches
Use a wide, low rise below the deck. Repeat the front outline to create a support with convincing depth.
Tunnel mouths
Use a taller rise and extend the arch profile backward to form the tunnel shell or rail portal.
Arch vs. half circle
The Arch Generator starts from construction presets; the Half Circle Generator is for unrestricted semicircle geometry.
Continue planning the build
Related Minecraft building tools
Move from the current blueprint to the next structural detail without starting the measurements again.
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 arch generator FAQ
What size should a Minecraft doorway arch be?
A 7-block-wide arch works well over a compact entrance. Use an odd width for a clear center block, then increase the preset for gates, bridges, or tunnels.
How do I make a Minecraft arch look less flat?
Increase the height relative to the width and keep the outline mode on. A taller opening creates a pointed visual rhythm, while a lower height creates a broad bridge arch.
Can I use this blueprint for a bridge?
Yes. Select the Bridge arch preset, build the curve as the lower edge of the span, then add thickness above it and mirror the support on the other side.
Should an arch use an odd or even width?
Odd widths have one center block and align cleanly with peaked details. Even widths create a two-block center and often fit double doors or roads better.