Minecraft Dome Generator
Build a dome or hemisphere roof — the top half of a sphere, widest circle on the ground. A hollow dome is open underneath so you can walk inside. Step through it layer by layer or rotate it in 3D.
How to Use the Dome Generator
Build a dome or hemisphere roof — the top half of a sphere, widest circle on the ground — with the block count and a 3D preview.
Quick Steps
- 1Set the diameter
- 2Choose filled or a hollow shell (open underneath)
- 3Build each circle at its height, widest first
- 4Rotate the 3D view to check it
Example Use Cases
- Roofs over rooms and arenas
- Observatories and planetariums
- Turret caps and rotundas
Tips
A hollow dome is open at the base so you can build inside it
Sit a dome on a cylinder for a round tower with a roof
The 3D view shows only the outer surface, so it stays fast at large sizes
Frequently Asked Questions
How do you build a dome in Minecraft?
A dome is the top half of a sphere: the widest circle sits on the ground and the layers shrink as they rise to a point. Build each circle at its height. This generator shows every layer, the block count, and a 3D preview of the finished dome.
Is a dome hollow underneath?
A hollow dome is just the curved shell and is open at the bottom, so you can walk inside — perfect for a roof over a room or an arena. A filled dome is a solid hemisphere. Choose whichever you need.
What is the difference between a dome and a sphere?
A dome is exactly the top half of a sphere. If you want a full ball, use the sphere generator; for a roof or hemisphere, the dome is the half you need, already sitting flat on the ground.
How many blocks does a dome need?
Roughly half of the equivalent sphere. A hollow dome uses far fewer than a filled one since it is only the shell. The generator shows the exact total and the count for the layer you are viewing.