Radius to diameter
A radius of 15 creates a 31x31 circle because Minecraft needs a center block plus both sides.
Radius-first circle calculator
Minecraft Circle Radius Generator
Enter a radius and get the matching Minecraft circle diameter, center point, block chart, and material estimate.
Radius
15 blocks
Diameter
31 blocks
Blocks
84
Mode
Outline
Build notes
Best for base planning
Use radius when you know how far the wall should sit from a beacon, portal, or center marker.
Odd diameter output
Radius mode creates odd diameters so the blueprint has a clear single center block.