Using the Minecraft Circle Chart
This minecraft circle chart shows pre-made circle templates for the most commonly used sizes. Each template shows the outline of a circle at that diameter, along with the total block count needed to build it. These serve as quick references when you know the size you need.
For custom sizes or to switch between filled and outline modes, use the full Minecraft Circle Generator tool. You can also generate ovals, spheres, and domes with the dedicated generator pages.