Mark the center first, then build one quadrant and mirror it.
Minecraft circle template
21 Block Minecraft Circle
A 21 block Minecraft circle is a practical mid-small footprint for survival towers, crop rings, fountain bases, and compact arenas. It is large enough to look round while still being easy to count by rows.
Diameter
21
Outline
56
Filled
317
Row pattern
21 block circle row counts
The row pattern is the part most builders miscount. Use the outline counts below when building a wall, tower, or ring. Use the generator preset for coordinates and PNG export.
1 · 8 · 4 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2 · 4 · 8 · 1
Use outline mode for walls and filled mode for floors or roofs.
Keep the row pattern visible while building so the circle does not drift.
Best uses
Where this circle size works
survival tower base
Open the preset when you need exact coordinates for this build type.
crop or beacon ring
Open the preset when you need exact coordinates for this build type.
starter arena center
Open the preset when you need exact coordinates for this build type.
room-sized floor pattern
Open the preset when you need exact coordinates for this build type.
Related sizes