Pixotile

Minecraft Dome Generator

Any width, any height, layer by layer.

Tap a block to see its coordinates. Grey dashed blocks belong to the layer below.

Style, wall thickness and world coordinates
Center of the base layer in your world (optional)
Shows real X, Y and Z for every layer and block, and in copied coordinates.
This layer
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Total blocks
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In stacks of 64
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Shulker boxes
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Blocks per row, top-right quarter
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Placed
0 of 0 (0%)
Print layers
Small layers print several to a page; big layers get a page of their own, split like the circle plan.
All layers
LayerBlocksPlaced
Total––

How to use the dome generator

  1. Pick how to set it. Width and height lets you choose any base and height. Cut a sphere keeps the top part of a sphere.
  2. Choose a profile: Round, Onion or Cone, and Hollow or Filled under the settings button.
  3. Build from the base up. Layer 1 is the base. The stepper shows each ring, the blocks per row and the layer below.
  4. Track your build by tapping blocks or marking a layer done, and switch to 3D to check the shape.
  5. Print the layers, download a PNG or get a Minecraft file to paste it in one go.

Any height

Many dome tools only make a half sphere. Here the height is up to you, from 1 to 192 layers, with three quick buttons for a 21-block base:

  • Half sphere: 11 layers, 569 blocks hollow. The classic dome for observatories and temples.
  • Shallow: 7 layers, 445 blocks. A low roof for halls, towers and greenhouses.
  • Tall: 21 layers, 965 blocks. A dome as high as it is wide, for cathedrals and landmarks.

Round, Onion and Cone profiles

Round follows a smooth curve: at half the base width it is a true half sphere, lower or higher it becomes a flattened or stretched half ellipsoid. Onion bulges out past the base in the lower third, then pulls in to a point: on a 21 base and 21 layers it reaches 25 blocks wide and takes 974 blocks. Cone has straight sides from the base to the tip, for spires, witch hats and tents; a 21 by 11 cone takes 349 blocks.

The 3D view of a hollow onion dome on a 21-block base, 21 layers high, wider than its base in the lower part and ending in a point.
An onion dome in the 3D view, 21 blocks at the base and 21 layers high.

Cut a sphere mode

Switch to Cut a sphere to take the top part of a sphere: half, two-thirds or any number of layers. Every layer is exactly the matching layer of the sphere generator, so a cut dome lines up with a sphere you already built or planned. Keeping half of a 21 sphere gives the same 11 layers and 569 blocks as the Round half sphere on a 21 base. Two-thirds curves back in at the bottom, like a planetarium.

Dome on a round tower

The bottom layer of every Round or Onion dome taller than a third of its width is exactly the circle of the same width from the circle generator: a thin circle for a hollow dome (56 blocks for 21) and a filled circle for a filled one (349 blocks). Build your tower wall with the circle generator, then start the dome on top of it at the same width and the curve continues without a ledge. A hollow dome has no floor, so you can put it straight on the wall.

The dome generator showing layer 4 of a round half-sphere dome on a 21-block base, with the layer below shown as grey dashed blocks.
Layer 4 of a round 21-block dome. The base layer matches the 21-block circle.

Glass domes

For a glass dome, choose Hollow with a 1-block wall. The shell is sealed, with no corner-only gaps, so it holds out water for an underwater base and keeps mobs out of a garden. A 31-block glass half dome takes 1,233 blocks. Use the tracker: glass rings are easy to lose count of.

Minecraft files and commands

Open Minecraft files and commands under the tool and type a block id such as minecraft:glass. Download a .schem file for WorldEdit on Java (//schem load with the file name including .schem, then //paste -a), a .mcstructure file for Bedrock (/structure load from a behavior pack; the corner goes at the position you give), or copy /fill commands or a .mcfunction file. The bottom center of the dome goes on the block where you paste or run the commands.

What was tested: every format was loaded on real servers, Paper 1.21.11 with WorldEdit 7.4.2 for Java and Bedrock Dedicated Server 1.26.63.1, and checked block by block against the plan, including an onion dome on a 15-block base. Every block matched. The Bedrock structure block Import screen was not part of the test. If a file does not work for you, use Report a problem in the panel.

Dome block counts

Round half-sphere domes, from the same engine as the generator. Hollow domes have a 1-block wall and no floor. Select a size to open it.

Blocks needed for round half-sphere Minecraft domes by base width
BaseHeightHollowFilled
7 blocks 4 57 108
9 blocks 5 105 229
11 blocks 6 153 418
15 blocks 8 285 984
21 blocks 11 569 2,647
25 blocks 13 809 4,353
31 blocks 16 1,233 8,132
41 blocks 21 2,177 18,725
51 blocks 26 3,393 35,826
64 blocks 32 5,272 69,168
75 blocks 38 7,309 112,770
101 blocks 51 13,313 274,067

Frequently asked questions

How do I build a dome in Minecraft?

Choose the base width and height in the generator, mark the center of the base in your world and build up from layer 1, one ring at a time. A round half-sphere dome on a 21-block base has 11 layers and takes 569 blocks with a 1-block wall.

How tall should a dome be?

Half the base width gives a classic half sphere (11 layers on a 21 base). A third of the width gives a shallow roof for halls and towers, and a height equal to the width gives a tall dome that reads well from far away. Any height from 1 to 192 works.

How do I put a dome on a round tower?

Build the tower wall with the circle generator at the same width, using a thin circle for a hollow dome. With the Round or Onion profile and a height of more than a third of the width, the bottom layer of the dome is exactly that circle, block for block, so the dome sits straight on top of the wall.

How do I make a glass dome?

Pick Hollow with a 1-block wall and build it from glass, or type minecraft:glass as the block for the files. The shell has no corner gaps, so it keeps water out under the sea. A 31-block glass half dome takes 1,233 glass blocks.

How do I make an onion dome?

Choose the Onion profile. It swells out past the base in the lower part and then narrows to a point, like the domes on Russian churches. Give it a tall height; on a 21-block base and 21 layers it widens to 25 blocks. The onion base goes up to 222.

How many blocks does a dome roof need?

The generator shows the total with stacks and shulker boxes. A hollow half-sphere roof on a 21-block base takes 569 blocks (8 stacks and 57); a shallow one takes 445. A hollow dome has no floor, so the count is just the roof. See the table for common sizes.

Related

Last updated: November 13, 2026