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CraftShape

Minecraft Sphere Generator

Every horizontal slice of a voxel sphere, layer by layer, with exact block counts and repeat-layer hints so you never build the same ring twice by accident.

Sphere Generator — 21 x 21 x 21 blocks — Bottom to top • front edge at the bottom of the grid (north)

Controls

Size

Size

blocks

Odd diameters have a single centre block, which is easier to line up.

Shell

Shell

Fill mode
blocks

2–3 blocks is sturdy enough to carve windows into.

Appearance

Appearance

Block color

Sphere Generator — layer 1

21 x 21 · 37 blocks · Layer 1 of 21

Drag to pan, scroll or pinch to zoom, hover a cell for coordinates.

Layer 1 of 21. Bottom to top • front edge at the bottom of the grid (north).

Layer navigation

Layer 1 of 21

Left and right arrow keys move between layers.

Side elevation

Layer 1 highlighted

Building this with friends?

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Build summary

Layer
1 / 21
Blocks in layer
37
Layer width
7
Total blocks
1,250
Diameter
21 blocks
Mode
Hollow, 1 thick

Build direction: Bottom to top. The bottom edge of every grid is the front (north) side, the top edge is the back, left and right stay as shown.

The side elevation shows how wide each layer is and highlights the layer you are viewing.

Layer 1 instructions

Includes every row, even the empty ones.

  1. Row 8:skip 9 spaces, place 3 blocks
  2. Row 9:skip 8 spaces, place 5 blocks
  3. Row 10:skip 7 spaces, place 7 blocks
  4. Row 11:skip 7 spaces, place 7 blocks
  5. Row 12:skip 7 spaces, place 7 blocks
  6. Row 13:skip 8 spaces, place 5 blocks
  7. Row 14:skip 9 spaces, place 3 blocks

How to build a Minecraft sphere

A sphere is a stack of circles. The generator tests the centre of every block against the 3D distance to the sphere's middle: if that distance is inside the radius the block is part of the ball, and for a hollow sphere it must also be outside the smaller inner radius set by your shell thickness. Because every distance is measured from the exact centre, the result is symmetrical in all three directions.

A build order that works

  1. Place a marker column the full height of the sphere, and mark the four compass directions.
  2. Build the widest layer first — it is the layer in the middle of the height and it anchors everything else.
  3. Work outwards from the middle, up and down, one ring at a time.
  4. Use the repeat hint: where consecutive layers are identical, build the same ring for each one without re-reading the plan.
  5. Cap the top and bottom last, then remove your scaffolding.

Hollow shell thickness

A 1 block shell is the lightest on resources but can look ragged at small diameters. A 2 or 3 block shell reads as a smooth curve and gives you material to carve doors and windows out of later.

Frequently asked questions

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