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Minecraft Sphere Generator

Pick a diameter and step through the sphere one horizontal layer at a time, with the center marked, blocks per row and the total number of blocks for the whole build.

Diameter

Layer 11

The red cells mark the center. Rows are counted from the top.

Blocks per row

How it works

Build a sphere or dome in three steps

Choose the diameter

Enter how many blocks across the sphere should be, from 3 to 200.
Hollow or solid

Hollow spheres are a one-block shell and use far fewer blocks. Solid spheres are filled all the way through.
Build layer by layer

Start with layer 1 at the bottom, place it using the row counts, then move to the next layer.

What you get

Spheres without the guesswork

Every layer

Step through the sphere from bottom to top with the slider or the arrow buttons.

Hollow shell

The hollow mode keeps only the blocks you can see, so there are no holes when viewed from any side.

Domes

Build only the layers from the middle up for a dome or planetarium roof.

Block totals

See the blocks in the current layer and in the whole sphere.

Center marked

Red cells mark the middle of each layer so every layer lines up.

Download PNG

Save any layer as an image to keep beside your game.

Tips

Tips for building spheres in Minecraft

A sphere is a stack of circles that grow toward the middle and shrink toward the top. The generator calculates each layer so that the shape is round from every side, not just from above.

Plan the center column

Place a temporary column of blocks (or scaffolding) at the center, as tall as the diameter. Every layer is built around that column, so the layers stay aligned. Remove it when you are done.

Domes

A dome is the top half of a sphere: start at the middle layer (the widest one) and build upward. For a dome on top of a round tower, use the same diameter for the tower in the circle generator.

How many blocks?

Hollow spheres grow roughly with the square of the diameter, solid ones with the cube. A solid sphere quickly needs thousands of blocks, so check the total before you start mining.

Not an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

FAQ