Minecraft Hexagon Generator

A hexagon has six equal sides, and on a square block grid only its top and bottom sides run along the grid. The other four sides run at 60 degrees, so they turn into a repeating stair of blocks. Eyeballing that stair is where hexagons go wrong, because one side ends up a block longer than the mirror side. The Minecraft hexagon generator draws the shape exactly: it places a regular polygon inside a circle of the size you give and fills every block whose centre falls inside all its sides. The result is symmetrical, so you can build one half and mirror it.

With rotation at 0 the shape stands on a flat side: a hexagon has a flat top and bottom, a triangle points up and an octagon has flat sides on all four edges. Turn it 30 degrees and the hexagon stands on a corner instead.

The same tool builds a Minecraft octagon generator plan: set the sides to 8. It builds a Minecraft triangle generator plan at 3 sides, a pentagon at 5 and a dodecagon at 12. An octagon with a size of 20 blocks between corners uses 52 blocks as an outline and 284 filled, and it covers an 18×18 footprint, because the width over the flat sides is less than the size measured between corners. A triangle with a size of 15 uses 31 blocks as an outline and 71 filled, and it covers a 13×11 footprint.

1. Set the sides. Use the Sides slider or a preset: hexagon, octagon, triangle, pentagon or dodecagon.
2. Set the size. Corner to corner is the width of the circle around the polygon. Choose Side length instead if you know how long each side should be; the generator converts it to the size and shows both.
3. Turn it. Rotation from 0 to 359 degrees. A hexagon repeats every 60 degrees, an octagon every 45.
4. Choose hollow or filled. Hollow draws a line you set from 1 to 8 blocks wide; filled gives a solid floor.
5. Build row by row. Mark blocks on the plan as you place them, or follow the row counts in the table under the plan.
6. Export. Save the plan as a PNG or download a .litematic file that lays the shape flat on the ground.

• Hex towers and gazebos: a hexagon with a cone roof on top from the cone generator.
• Octagonal keeps and lighthouses: an octagon looks rounder than a square and is far easier to build than a circle.
• Hexagon floors and arenas with a filled floor and a hollow outline in another block.
• Triangles for pyramids, flags, road signs and gable ends.
• Honeycomb builds: repeat one hexagon at the same size and rotation, then trim the shared walls by hand.

The size is measured across the circle around the polygon, so a square of size 20 is only 14 blocks on each side. If you need a specific wall length, switch to Side length. For a thicker wall, raise the line width instead of building a second ring. To fit a polygon in a space, choose the size that matches the shorter of the space's two dimensions, then check the bounding size in the stats, which gives the exact width and height in blocks.