Minecraft Dome Generator

Step 1 — Set Your Radius

Use the Radius slider (1-20 blocks) or click a preset button. A radius of 8 creates a 17-block-wide dome — a good starting size for most builds.

Step 2 — Choose Your Dome Type

The generator offers three dome shapes:

• Dome — A hemisphere (top half of a sphere). The standard choice for rooftops and enclosures.
• Dome + Floor — Adds a solid circular floor at the base, creating a complete enclosed structure.
• Full Sphere — Generates the entire sphere for comparison or when you need a globe.

Step 3 — Select Hollow or Filled

Toggle between Hollow (shell only) for walk-inside domes and Filled (solid block mass) for decorative or terrain features.

Step 4 — Browse Layers

Switch to the Layer View tab to see each Y-level cross-section. The table below shows every layer with block count and diameter, and you can click any row to jump to that layer.

Step 5 — 3D Preview & Commands

The 3D Preview tab shows a fully rotatable voxel model. The Commands tab provides WorldEdit //hsphere commands and vanilla /fill equivalents.

Choosing the right dome type depends on your build purpose:

Dome (Hemisphere)

The most common shape for Minecraft builders. A dome is the top half of a sphere — it sits flat on a surface and curves upward. Use it when you need a roof for a circular building, a planetarium cap, or an igloo.

Dome + Floor

Adds a solid circular floor at the base of the dome. This creates a fully enclosed structure — useful for underwater habitats, greenhouse domes, or survival base roofs where you need both the curved top and a flat walking surface.

Full Sphere

Generates the complete sphere (both hemispheres). Use this for floating globe builds, planet decorations, or when you want to compare dome vs sphere block counts side by side.

Method 1: Layer-by-Layer (All Editions)

1. Build the base circle first. Use the bottom layer (Layer 1 for dome mode) as your foundation. Place blocks exactly as shown in the grid.

2. Work upward one layer at a time. Each layer is a slightly smaller circle. The generator shows the exact diameter change at each Y-level.

3. Use scaffolding as support. Place dirt or scaffolding blocks at the dome's peak as a reference point, then fill in the curves between base and peak.

Method 2: WorldEdit Commands (Java Edition)

If you have WorldEdit installed, the Commands tab generates the exact //hsphere command for your dome. Fly to the center point at the base of your dome, run the command, and the dome builds instantly.

Method 3: Bedrock Edition

Bedrock Edition doesn't support WorldEdit, but the layer-by-layer blueprints work identically. Use the Layer View tab and build each cross-section manually. The /fill command tab shows vanilla commands that work on Bedrock for filling rectangular regions.

Pro Tips for Large Domes

For domes with radius 12+, build the base circle first, then every 3rd layer to create a "skeleton" of the dome. Fill in the gaps afterward — this prevents counting errors on long continuous curves.

• Greenhouse Dome — Use glass blocks with "Dome + Floor" mode to create a botanical garden. Add farmland and crops inside.
• Underwater Base — Build a hollow dome on the ocean floor, then use sponges to drain the interior. The dome keeps water out while giving you a panoramic view.
• Observatory — Build a dome on top of a tower. Use sea lanterns or glowstone in the shell for a lit-up effect at night.
• Nether Hub — A dome makes an excellent central hub in the Nether. The curved shape stands out against the flat terrain.
• PvP Arena — Hollow dome arenas create natural boundaries for combat. The height gives spectators viewing positions above the action.
• Cathedral Roof — Use a dome as the roof of a rectangular cathedral build. Offset the dome slightly for a Romanesque or Byzantine look.