Pair it with a circle wall
Build the walls with the circle generator at the same diameter, then put the dome on top. Layer 1 matches the wall outline.
Free Minecraft building tool
Minecraft Dome Generator
Use this Minecraft dome generator to make a dome roof from any width and height, from a true half sphere to a low, flattened roof. Every layer comes with its block count, a 3D preview and downloads for Litematica, WorldEdit, Bedrock or a world.
- Width 1–256
- Adjustable height
- No floor, ready to place on walls
- Layer counts
Odd: 1-block centre
- Blocks needed
- 473
- Stacks
- 7 + 250.3 shulker boxes
- Size (X × Y × Z)
- 15 × 8 × 15
- This layer
- 56
Click or drag over blocks to tick them off as you build.Placed 0 / 56
Download or copy
The Java world is a creative superflat world (Java 1.21.4 or newer) with the build in front of spawn. Unzip it into .minecraft/saves.
WorldEdit commandWorldEdit has no dome command. Use the .schem file with //schem load and //paste.
Minecraft dome sizes
Counts use a one-block shell with an open floor.
| Blueprint | Width × height | Good for | Hollow blocks | Solid blocks |
|---|---|---|---|---|
| 9 × 5 | Tower caps and gazebos | 165 | 229 | |
| 15 × 8 | Chapels and observatories | 473 | 984 | |
| 21 × 11 | Greenhouses and throne rooms | 965 | 2,647 | |
| 31 × 10 | Low arena roofs | 1,585 | 5,150 | |
| 41 × 21 | Cathedrals and biodomes | 3,777 | 18,725 |
How to build a dome
Match the wall
Set the dome width to the outside diameter of the circular wall it will sit on.
Pick the height
Half the width gives a half sphere. Lower values make a flatter roof.
Build from the bottom ring
Layer 1 is the widest ring and sits directly on the wall.
Close the top
The last layers are small discs. Check the 3D preview before you place them.
Dome tips
Flatter domes for wide spans
A 41-block half sphere is 21 blocks tall. Halve the height for a roof that fits a hall without towering over it.
Glass domes
Use glass for greenhouses and observatories. Full glass blocks keep rain and mobs out with either shell. With glass panes, use the default thick shell, as panes only join side to side.
Download formats
Every shape can be downloaded for the tool you already use.
Litematica (.litematic)
Put the file in .minecraft/schematics, open the Litematica menu with M and load it as a hologram to build over.
WorldEdit (.schem)
Put the file in the WorldEdit schematics folder, then run //schem load <name> and //paste. The shape is centred on you.
Bedrock (.mcstructure)
Load it with a structure block, or add it to a behaviour pack and use /structure load. Shapes wider than 64 blocks come as tiles.
Java world (.zip)
Unzip into .minecraft/saves and open it: a creative superflat world with your build in front of spawn.
PNG blueprint
A printable image with a grid, coordinates and centre lines. Spheres and domes also come as one sheet with every layer.
Frequently asked questions
How do you build a dome in Minecraft?
Enter the width and height, then build layer by layer from the widest ring at the bottom to the small cap at the top. The dome has no floor, so it can sit straight on a wall.
How tall should a dome be?
Half the width makes a classic half sphere. For wide roofs a third of the width looks good and saves blocks.
Is a dome just half of a sphere?
At the default height, yes: it matches the top half of a sphere of the same width. Changing the height stretches or flattens it.
Can I paste a dome with WorldEdit?
WorldEdit has no dome command, so download the .schem file and use //schem load and //paste.
More shape tools
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