How do I build a circle in Minecraft?

Pick a diameter, generate the grid here, and lay blocks to match it row by row. For a sphere, stack circles of changing diameter — widest in the middle, narrowing toward the top and bottom.

What is the difference between thin and filled?

Thin draws only the one-block outline, which is what you want for round walls and towers. Filled colors in the whole disk, which is what you want for circular floors or the layers of a dome.

Why do small circles look square?

At small diameters there are not enough blocks to suggest a curve, so the result looks blocky or square. Circles start to read as round from roughly a diameter of 7 and up.

Minecraft Pixel Circle Generator

Round shapes in a grid world are really many-sided polygons. This generator draws the closest blocky circle for any diameter so you can copy it row by row when you build.

Drag the diameter and switch between a thin outline and a filled disk. The block count updates as you go, which is handy for gathering materials before you start.

How to use

Set the diameter with the slider or input.
Choose a thin outline for towers and rings, or filled for floors and domes.
Read the block count to plan your materials.
Build the circle one row at a time, matching the grid.

Frequently asked questions

How do I build a circle in Minecraft?: Pick a diameter, generate the grid here, and lay blocks to match it row by row. For a sphere, stack circles of changing diameter — widest in the middle, narrowing toward the top and bottom.
What is the difference between thin and filled?: Thin draws only the one-block outline, which is what you want for round walls and towers. Filled colors in the whole disk, which is what you want for circular floors or the layers of a dome.
Why do small circles look square?: At small diameters there are not enough blocks to suggest a curve, so the result looks blocky or square. Circles start to read as round from roughly a diameter of 7 and up.