Minecraft Sphere Generator (Java & Bedrock)
Choose a diameter, then build one layer at a time from the bottom. A hollow 21-block sphere takes 1,850 blocks across 21 layers.
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Blocks for a hollow sphere (solid wall, thickness 1)
| Diameter | Hollow blocks | Stacks + blocks | Filled blocks |
|---|---|---|---|
| 5 | 74 | 1 + 10 | 81 |
| 7 | 146 | 2 + 18 | 179 |
| 9 | 290 | 4 + 34 | 389 |
| 11 | 458 | 7 + 10 | 739 |
| 15 | 890 | 13 + 58 | 1,791 |
| 21 | 1,850 | 28 + 58 | 4,945 |
| 25 | 2,642 | 41 + 18 | 8,217 |
| 31 | 4,130 | 64 + 34 | 15,515 |
| 41 | 7,394 | 115 + 34 | 36,137 |
| 51 | 11,642 | 181 + 58 | 69,599 |
Counts come from the same generator as the tool above, so they always match the grid.
How to use it
- Set the diameter. The sphere is that many blocks wide, deep and tall.
- Mark the centre column on the ground, then start at layer 1 (the bottom).
- Build the layer shown on the grid, go up one block and press › for the next layer.
- The middle layer is the widest. After it, the layers shrink again in the same order.
- Pick Hollow to save blocks, and raise Wall thickness if you want a stronger shell.
How it works
Each block is placed if its centre falls inside the perfect shape that fits your size exactly. Hollow shapes keep only the blocks within your chosen wall thickness of the outside, so walls never have gaps. Every number on this page is calculated, not typed by hand.
Questions
Which layer do I build first?
Start with layer 1, the bottom. Each press of › moves one block up. Building bottom-up means every layer has something to stand on.
How many blocks does a sphere need?
It depends on the size and whether it is hollow. The counter above the grid shows the exact total, stacks of 64 and shulker boxes for your settings.
Does this work for Minecraft Bedrock and Java?
Yes. Blocks are the same size in Java and Bedrock, so the same layout works in both editions and in every version.
Why is the centre a 2×2 square on even sizes?
An even diameter has no single middle block, so the centre falls between four blocks. Use an odd size (like 25) if you want one middle block to build from.
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By PickaxeKit Editorial Team. Updated 2026-11-09.