Open editable Dome Generator
Minecraft 21x21 Dome Blueprint
Plan a 21x21 Minecraft dome with layer diameters, material counts, and practical build ideas for glass roofs and observatories.
21x21 dome layers
477 blocks across 11 layers
| Y | Diameter | Radius | Blocks |
|---|---|---|---|
| 0 | 21x21 | 10 | 56 |
| 4 | 19x19 | 9 | 52 |
| 6 | 17x17 | 8 | 48 |
| 7 | 15x15 | 7 | 40 |
| 8 | 13x13 | 6 | 36 |
| 9 | 9x9 | 4 | 24 |
| 10 | 1x1 | 0 | 1 |