Minecraft Circle Generator

Common sizes

Block counts for diameters 5 to 25. Each diameter opens in the generator above.

How to read the grid

Each square is one block. Yellow squares are blocks to place; the red cross marks the centre of the grid. The number in the left margin is how many blocks are in that row, and the row readout under the grid says the same thing in words, with the columns each run covers: “Row 4: 11 blocks, columns 3-13”.

Build from the top row down, or build one quadrant and mirror it. The quadrant figure is the top-left corner of the grid. Four quadrants plus the centre row and column add up to the total, so for the diameter 15 outline above, 4 × 9 + 4 = 40. An even diameter has no centre row or column, so its four quadrants are the whole shape.

The styles differ only in which blocks of the disc are kept. Filled keeps every block. Outline keeps the blocks that touch empty space on one of their four sides. Thick outline keeps the ring left when a smaller disc, two blocks narrower and sharing the same centre, is taken out.

Even or odd diameter

An odd diameter has one centre block, which is handy for a door, a ladder or a beacon. An even diameter has a 2 × 2 centre instead. Neither is better; pick the one that matches what you want in the middle. The side-by-side comparison is in even or odd circle diameter.

The off-by-one question

Most confusion about circle sizes comes from counting from the wrong place. Here, diameter means the number of blocks in the widest row, edge to edge. The centre of an outer block is half a block short of the true edge, so for diameter 15 the outermost blocks are 7 blocks from the centre block, not 7.5.

The rule used here is exact and has no fudge factors. A block is included when its centre is no further from the centre of the grid than half the diameter, and a block exactly on that distance counts as included. That is the whole definition, so the same diameter always gives the same grid, and the circle chart and the other generators on this site agree with it.

A block grid can only approximate a circle. The result is the nearest set of whole blocks under that rule, not a perfect round shape.

Questions

How many blocks fit in a stack?

Most placeable blocks stack to 64, and some items differ: ender pearls stack to 16, for example. See the Minecraft Wiki item page for details. This page counts stacks of 64, and the stack calculator also handles stacks of 16 and 1.

Why is the diameter 2 circle a 2 × 2 square?

With only four blocks, every block is as close to the centre as the rule allows, so all four are included. Small diameters look like squares because there are not enough blocks to show a curve.

Can I make an oval, a sphere or a dome?

Yes, on separate pages: the oval generator takes a width and a depth, the sphere generator shows every layer, and the dome generator gives the upper half with an optional wall.

Where can I look up a ready-made chart?

The circle chart lists printable grids by diameter. For the building method, read how to make a circle in Minecraft.

Does the tool send my input anywhere?

No. The grid is calculated in your browser.

This is an unofficial fan tool. It is not an official Minecraft product and is not affiliated with Mojang or Microsoft.