How to Make a Circle in Minecraft

You build a circle in Minecraft by working from a list of row lengths. Pick a diameter, get the number of blocks in each row, build one quarter of the shape and mirror it into the other three. This page walks through that method with two worked examples, and shows what usually goes wrong.

The row lengths are the part people find hard to get right by eye, so let a tool do that step. The Minecraft circle generator gives you the grid and the count for any diameter, and the circle chart lists ready-made sizes. The steps below are what you do with those numbers.

What you are actually building

Blocks are cubes on a square grid, so a circle in Minecraft is a staircase of whole blocks that approximates a round shape. A perfect circle is not possible with blocks in vanilla Minecraft. What you can get is a close fit for a given size, and larger diameters look rounder because each step is small compared with the whole shape.

This site uses one fixed rule so that the generator, the charts and this page always agree. The diameter is the number of blocks in the widest row, edge to edge. A block is included when its centre is no further from the centre of the grid than half the diameter. You do not need to apply that rule yourself; it is why the same diameter always gives the same shape here. Other charts and generators may round differently, so their shapes for the same diameter can differ by a block or two. Pick one source and use its numbers throughout the build.

Step 1: Pick a diameter

Decide how wide the circle should be, counted in blocks across the widest row. Start from what has to fit inside: a room, a tower, a pond. Measure the space in blocks and use that as the diameter. For a wall, the diameter includes the wall blocks, so the inside is narrower than the diameter by one wall block on each side. Add a block for each side to the width you need inside.

Also choose even or odd on purpose. An odd diameter has a single centre block, which suits a door, ladder or beacon. An even diameter has a square of four blocks in the middle instead and no single centre block. The even vs odd diameter guide compares the two side by side, so decide there if you are unsure and come back.

Step 2: Get the row lengths

Enter your diameter in the circle generator or find it on the circle chart. Each gives you the length of every row, counted from the top. That list of numbers is the whole plan. If you only want a rough idea of materials, the same tool gives you the block total, and the stack calculator turns any block count into stacks to gather.

You choose between a filled disc, an outline and a thick outline. Every style comes from the same disc, so the outer edge is identical. For the row lengths in this guide we use the filled shape. For an outline, keep only blocks that have an empty space directly above, below, left or right of them. That means the whole top and bottom rows plus the blocks that stick out at each step.

Step 3: Mark the centre

Mark where the middle of the circle will be before you place anything else. For an odd diameter, place one block as the centre marker. For an even diameter, the centre sits where four blocks meet, so mark that corner or place a four-block square.

Then lay guide lines across the centre, each as long as your diameter. For an odd diameter, lay one row and one column of blocks crossing at the centre block. These two arms are built once and are not mirrored. Check that each is as long as your diameter before moving on, because an error here repeats through the whole build.

For an odd diameter the four areas between the arms are the quarters, each half of (diameter minus one) blocks on a side(5×5 for diameter 11). For an even diameter there are no separate arms: each quarter is half the diameter on a side (6×6 for diameter 12) and includes one block of the centre square and the row and column beside the centre lines. If you want guides, lay one line the full diameter along each middle edge.

Step 4: Build one quarter

Take the top-left area between the arms. Each row starts half of (diameter − row length) blocks in from the edge of your square and runs to the arm (for an even diameter, to the centre line). The number of blocks you place in the quarter is half that row's length, rounded down for an odd diameter. Start with the top row, which is short and starts well in from the edge, and work down toward the arm. Each row below reaches further out until the widest row.

Building one quarter means you only plan about a quarter of the blocks, and you can compare each row with the list as you go.

Step 5: Build the other three quarters

The simplest way is to rebuild the quarter by hand in each of the other three areas. Build the top-right quarter as a left-right mirror of the top-left: each row has the same number of blocks, but it starts at the arm and runs out to the edge. Build the bottom two quarters the same way, but work from the arm outward and read the rows in reverse order, so the longest row is nearest the arm and the shortest is at the bottom. In Creative mode, a structure block can save the quarter and load it back mirrored left-right or front-back, which also works for large circles. Litematica can do the same with a mod.

Step 6: Check each row against the counts

Walk down the shape and count the blocks in each row, comparing with your list. Counting is quicker if you place a marker, such as a torch, every few blocks along the edge. If a row is off, fix it now. A wrong row usually means a wrong starting offset, that is, the row began the wrong number of blocks in from the edge, and it will not fix itself when you place the rest.

Worked examples

Here are the row lengths for one odd and one even diameter, from the top row down, for the filled shape. The grids show the same filled shapes, with the red cross marking the centre.

Common mistakes

• Measuring the diameter from the wrong place. Count whole blocks in the widest row, not the distance between block centres. A row that is one block short or long throws off every row after it.
• Mixing up an even and an odd centre. An odd circle is centred on a block and an even one is centred on a block corner. If your marker is in the wrong place, the quarters will not mirror.
• Building the whole thing by eye. Small steps in the curve are easy to misjudge. Use the row list for each row instead of relying on how it looks.
• Placing a quarter without checking it. If one quarter is wrong, rebuilding it in the other three areas repeats the mistake. Check it before you rebuild it.
• Expecting it to look perfectly round at a small size. Small diameters look blocky because there are too few blocks to show a curve. Go up a few sizes if the shape is too coarse.

A note on commands and mods

If you play with a building mod such as WorldEdit, it can draw circles and cylinders for you, but that is outside vanilla Minecraft and this method does not need it.

Where to go next

Once the flat circle works, the same grids lead to taller builds. Use the round tower generator to stack circles into a tower, the dome generator for a roof, or the oval generator if you need a shape wider than it is tall.