Minecraft Circle and Sphere Generator

How to use the circle generator

1. Choose Circle, Ellipse, Sphere or Dome.
2. Enter the size in blocks. For a dome, the height is how tall it is from the ground to the top.
3. Pick a style. Thick suits most walls, Thin uses the fewest blocks and Filled gives a solid floor or shape.
4. Build from the grid. Each green square is one block, and the yellow dashed lines mark the centre.

For spheres and domes, step through the shape one layer at a time with the slider or the + and − buttons. The faded squares show the layer below, so you can line each new layer up with the last. The 3D preview shows what you've built so far, and the table lists the blocks you need for every layer.

Tap or hover over any block to see its row number and how many blocks that row has. When a row is split into separate runs, the tooltip lists each one, such as 3 + 3.

How to build a circle in Minecraft

1. Mark the centre. For an odd size, such as 25, the centre is one block. For an even size, it falls between four blocks.
2. Build the widest rows first. Count out the long straight run through the middle on each of the four sides.
3. Fill in each quarter. A circle is symmetrical, so once one quarter is right, you can mirror it on the other three.
4. Count from a known point. The brighter line every 5 blocks on the grid makes counting easier.

Odd sizes are usually easier to build because the circle has a single centre block. Use an even size when you need the circle to fit around a 2×2 feature, such as a staircase or a large tree trunk.

Thin, thick or filled?

• Thin: fewest blocks. Where the edge steps diagonally, blocks only touch at their corners. You can't walk through these gaps, and water won't flow through them.
• Thick: each block touches the next by a full side, so the wall looks solid from inside and outside. This style is best for towers, walls and glass domes.
• Filled: every block inside the shape, for floors, platforms, solid spheres and planet builds.

Circle block counts

These counts are for one layer, using this generator's shape.

To build a round tower, multiply the count by the number of layers. A 15-block thick wall that is 20 blocks tall needs 56 × 20 = 1,120 blocks.

Sphere and dome block counts

The dome figures use a height of half the diameter, rounded up, and leave the bottom open.

Tips for building spheres and domes

• Build from the middle layer. On a sphere, the widest layer is in the middle. Build it first, then work up and down, since every other layer fits inside it.
• Use a scaffold. Pillars of dirt or scaffolding at the centre and edges make it easier to place layers up in the air. Remove them afterwards.
• Plan for the build height. A large sphere can be taller than you expect. In Java Edition 1.18 and later, the Overworld runs from Y −64 to Y 319.
• Make a dome lower. For a flatter roof, set the height to less than half the diameter. The generator turns it into a squashed dome.
• Check what's left. The running total in the layer table shows how many blocks you've used so far.

Frequently asked questions

What is the easiest circle size to build in Minecraft?

Small odd sizes such as 7, 9, 11 and 13 are the easiest. They have a single center block and simple steps, so each quarter is quick to count out.

How do I make an oval in Minecraft?

Choose Ellipse and set a different width and length. For an oval dome or an egg-shaped sphere, tick the stretch option. The grid then shows every block, just like a circle.

Can you build a perfect circle in Minecraft?

Not exactly, as blocks are square. The generator places each block whose center falls inside the true circle, which gives a smooth-looking result at any size. Bigger circles look rounder, because each step is a smaller part of the edge.

How many blocks do I need for a circle or sphere?

It depends on the diameter and style. A 25-block circle takes 68 blocks as a thin wall, 96 as a thick wall or 489 filled, and a thick 25-block sphere shell takes 2,642. The tables above list common sizes, and the generator counts any size layer by layer.

What's the largest circle or sphere I can generate?

Up to 512 blocks across for circles and ellipses, and 160 blocks for spheres and domes. For a big sphere in Java Edition, check that it fits between Y −64 and Y 319 before you start.

Does the circle generator work for Bedrock Edition?

Yes. Circles and spheres are built the same way in Java and Bedrock Edition, so the grid and block counts work for both.