Sealmount Sphere and dome blueprints 15 × 15 Minecraft 15×15 Sphere and Dome: Layer-by-Layer Blueprint
A hollow sphere 15 blocks across, 1 block thick, takes 530 blocks in 15 layers. The dome is its top 8 layers: 285 blocks. A solid sphere takes 1,791.
Hollow sphere 530
Hollow dome 285
Solid sphere 1,791
Layers (sphere / dome) 15 / 8
Open this sphere in the generator Open the dome
There you can change the shell thickness, make it solid or oval, or pick another height, then check off each row as you build.
Charts show the hollow sphere with a shell 1 block thick, in full blocks. The dome is its top half; the dome's bottom layer has the same outer edge as the Circle generator's circle of the same diameter. Layer 1 is the bottom. Rows run north to south and columns west to east, both counted from 1. Every “skip” is counted from the west edge. Rows without blocks are left out. How the calculations work
Every layer, from the bottom up
Jump to a layer: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 1 of 15 · 21 blocks
Rows of layer 1, north to south
Row Blocks From the west edge
6 3 skip 6 from west, place 3 7 5 skip 5 from west, place 5 8 5 skip 5 from west, place 5 9 5 skip 5 from west, place 5 10 3 skip 6 from west, place 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 2 of 15 · 48 blocks
Rows of layer 2, north to south
Row Blocks From the west edge
4 5 skip 5 from west, place 5 5 7 skip 4 from west, place 7 6 6 skip 3 from west, place 3; then skip 9 from west, place 3 7 4 skip 3 from west, place 2; then skip 10 from west, place 2 8 4 skip 3 from west, place 2; then skip 10 from west, place 2 9 4 skip 3 from west, place 2; then skip 10 from west, place 2 10 6 skip 3 from west, place 3; then skip 9 from west, place 3 11 7 skip 4 from west, place 7 12 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 3 of 15 · 28 blocks
Rows of layer 3, north to south
Row Blocks From the west edge
3 5 skip 5 from west, place 5 4 2 skip 4 from west, place 1; then skip 10 from west, place 1 5 2 skip 3 from west, place 1; then skip 11 from west, place 1 6 2 skip 2 from west, place 1; then skip 12 from west, place 1 7 2 skip 2 from west, place 1; then skip 12 from west, place 1 8 2 skip 2 from west, place 1; then skip 12 from west, place 1 9 2 skip 2 from west, place 1; then skip 12 from west, place 1 10 2 skip 2 from west, place 1; then skip 12 from west, place 1 11 2 skip 3 from west, place 1; then skip 11 from west, place 1 12 2 skip 4 from west, place 1; then skip 10 from west, place 1 13 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 4 of 15 · 32 blocks
Rows of layer 4, north to south
Row Blocks From the west edge
2 5 skip 5 from west, place 5 3 2 skip 4 from west, place 1; then skip 10 from west, place 1 4 2 skip 3 from west, place 1; then skip 11 from west, place 1 5 2 skip 2 from west, place 1; then skip 12 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 skip 1 from west, place 1; then skip 13 from west, place 1 8 2 skip 1 from west, place 1; then skip 13 from west, place 1 9 2 skip 1 from west, place 1; then skip 13 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 2 from west, place 1; then skip 12 from west, place 1 12 2 skip 3 from west, place 1; then skip 11 from west, place 1 13 2 skip 4 from west, place 1; then skip 10 from west, place 1 14 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 5 of 15 · 36 blocks
Rows of layer 5, north to south
Row Blocks From the west edge
2 7 skip 4 from west, place 7 3 2 skip 3 from west, place 1; then skip 11 from west, place 1 4 2 skip 2 from west, place 1; then skip 12 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 skip 1 from west, place 1; then skip 13 from west, place 1 8 2 skip 1 from west, place 1; then skip 13 from west, place 1 9 2 skip 1 from west, place 1; then skip 13 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 2 from west, place 1; then skip 12 from west, place 1 13 2 skip 3 from west, place 1; then skip 11 from west, place 1 14 7 skip 4 from west, place 7
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 6 of 15 · 40 blocks
Rows of layer 6, north to south
Row Blocks From the west edge
1 3 skip 6 from west, place 3 2 6 skip 3 from west, place 3; then skip 9 from west, place 3 3 2 skip 2 from west, place 1; then skip 12 from west, place 1 4 2 skip 1 from west, place 1; then skip 13 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 place 1 on the west edge; then skip 14 from west, place 1 8 2 place 1 on the west edge; then skip 14 from west, place 1 9 2 place 1 on the west edge; then skip 14 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 1 from west, place 1; then skip 13 from west, place 1 13 2 skip 2 from west, place 1; then skip 12 from west, place 1 14 6 skip 3 from west, place 3; then skip 9 from west, place 3 15 3 skip 6 from west, place 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 7 of 15 · 40 blocks
Rows of layer 7, north to south
Row Blocks From the west edge
1 5 skip 5 from west, place 5 2 4 skip 3 from west, place 2; then skip 10 from west, place 2 3 2 skip 2 from west, place 1; then skip 12 from west, place 1 4 2 skip 1 from west, place 1; then skip 13 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 place 1 on the west edge; then skip 14 from west, place 1 7 2 place 1 on the west edge; then skip 14 from west, place 1 8 2 place 1 on the west edge; then skip 14 from west, place 1 9 2 place 1 on the west edge; then skip 14 from west, place 1 10 2 place 1 on the west edge; then skip 14 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 1 from west, place 1; then skip 13 from west, place 1 13 2 skip 2 from west, place 1; then skip 12 from west, place 1 14 4 skip 3 from west, place 2; then skip 10 from west, place 2 15 5 skip 5 from west, place 5
The dome: layers 8–15
For a dome, build only these 8 layers. Sphere layer 8 is dome layer 1, the ring that stands on the ground or on a round tower wall.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 8 of 15 · 40 blocks · Dome layer 1
Rows of layer 8, north to south
Row Blocks From the west edge
1 5 skip 5 from west, place 5 2 4 skip 3 from west, place 2; then skip 10 from west, place 2 3 2 skip 2 from west, place 1; then skip 12 from west, place 1 4 2 skip 1 from west, place 1; then skip 13 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 place 1 on the west edge; then skip 14 from west, place 1 7 2 place 1 on the west edge; then skip 14 from west, place 1 8 2 place 1 on the west edge; then skip 14 from west, place 1 9 2 place 1 on the west edge; then skip 14 from west, place 1 10 2 place 1 on the west edge; then skip 14 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 1 from west, place 1; then skip 13 from west, place 1 13 2 skip 2 from west, place 1; then skip 12 from west, place 1 14 4 skip 3 from west, place 2; then skip 10 from west, place 2 15 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 9 of 15 · 40 blocks · Dome layer 2
Rows of layer 9, north to south
Row Blocks From the west edge
1 5 skip 5 from west, place 5 2 4 skip 3 from west, place 2; then skip 10 from west, place 2 3 2 skip 2 from west, place 1; then skip 12 from west, place 1 4 2 skip 1 from west, place 1; then skip 13 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 place 1 on the west edge; then skip 14 from west, place 1 7 2 place 1 on the west edge; then skip 14 from west, place 1 8 2 place 1 on the west edge; then skip 14 from west, place 1 9 2 place 1 on the west edge; then skip 14 from west, place 1 10 2 place 1 on the west edge; then skip 14 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 1 from west, place 1; then skip 13 from west, place 1 13 2 skip 2 from west, place 1; then skip 12 from west, place 1 14 4 skip 3 from west, place 2; then skip 10 from west, place 2 15 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 10 of 15 · 40 blocks · Dome layer 3
Rows of layer 10, north to south
Row Blocks From the west edge
1 3 skip 6 from west, place 3 2 6 skip 3 from west, place 3; then skip 9 from west, place 3 3 2 skip 2 from west, place 1; then skip 12 from west, place 1 4 2 skip 1 from west, place 1; then skip 13 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 place 1 on the west edge; then skip 14 from west, place 1 8 2 place 1 on the west edge; then skip 14 from west, place 1 9 2 place 1 on the west edge; then skip 14 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 1 from west, place 1; then skip 13 from west, place 1 13 2 skip 2 from west, place 1; then skip 12 from west, place 1 14 6 skip 3 from west, place 3; then skip 9 from west, place 3 15 3 skip 6 from west, place 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 11 of 15 · 36 blocks · Dome layer 4
Rows of layer 11, north to south
Row Blocks From the west edge
2 7 skip 4 from west, place 7 3 2 skip 3 from west, place 1; then skip 11 from west, place 1 4 2 skip 2 from west, place 1; then skip 12 from west, place 1 5 2 skip 1 from west, place 1; then skip 13 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 skip 1 from west, place 1; then skip 13 from west, place 1 8 2 skip 1 from west, place 1; then skip 13 from west, place 1 9 2 skip 1 from west, place 1; then skip 13 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 1 from west, place 1; then skip 13 from west, place 1 12 2 skip 2 from west, place 1; then skip 12 from west, place 1 13 2 skip 3 from west, place 1; then skip 11 from west, place 1 14 7 skip 4 from west, place 7
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 12 of 15 · 32 blocks · Dome layer 5
Rows of layer 12, north to south
Row Blocks From the west edge
2 5 skip 5 from west, place 5 3 2 skip 4 from west, place 1; then skip 10 from west, place 1 4 2 skip 3 from west, place 1; then skip 11 from west, place 1 5 2 skip 2 from west, place 1; then skip 12 from west, place 1 6 2 skip 1 from west, place 1; then skip 13 from west, place 1 7 2 skip 1 from west, place 1; then skip 13 from west, place 1 8 2 skip 1 from west, place 1; then skip 13 from west, place 1 9 2 skip 1 from west, place 1; then skip 13 from west, place 1 10 2 skip 1 from west, place 1; then skip 13 from west, place 1 11 2 skip 2 from west, place 1; then skip 12 from west, place 1 12 2 skip 3 from west, place 1; then skip 11 from west, place 1 13 2 skip 4 from west, place 1; then skip 10 from west, place 1 14 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 13 of 15 · 28 blocks · Dome layer 6
Rows of layer 13, north to south
Row Blocks From the west edge
3 5 skip 5 from west, place 5 4 2 skip 4 from west, place 1; then skip 10 from west, place 1 5 2 skip 3 from west, place 1; then skip 11 from west, place 1 6 2 skip 2 from west, place 1; then skip 12 from west, place 1 7 2 skip 2 from west, place 1; then skip 12 from west, place 1 8 2 skip 2 from west, place 1; then skip 12 from west, place 1 9 2 skip 2 from west, place 1; then skip 12 from west, place 1 10 2 skip 2 from west, place 1; then skip 12 from west, place 1 11 2 skip 3 from west, place 1; then skip 11 from west, place 1 12 2 skip 4 from west, place 1; then skip 10 from west, place 1 13 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 14 of 15 · 48 blocks · Dome layer 7
Rows of layer 14, north to south
Row Blocks From the west edge
4 5 skip 5 from west, place 5 5 7 skip 4 from west, place 7 6 6 skip 3 from west, place 3; then skip 9 from west, place 3 7 4 skip 3 from west, place 2; then skip 10 from west, place 2 8 4 skip 3 from west, place 2; then skip 10 from west, place 2 9 4 skip 3 from west, place 2; then skip 10 from west, place 2 10 6 skip 3 from west, place 3; then skip 9 from west, place 3 11 7 skip 4 from west, place 7 12 5 skip 5 from west, place 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Layer 15 of 15 · 21 blocks · Dome layer 8
Rows of layer 15, north to south
Row Blocks From the west edge
6 3 skip 6 from west, place 3 7 5 skip 5 from west, place 5 8 5 skip 5 from west, place 5 9 5 skip 5 from west, place 5 10 3 skip 6 from west, place 3
Other sphere sizes
All sphere sizes
