Free 100% In-Browser Tool

Minecraft Circle Generator: Pixel Art & Block Chart

Generate pixel-perfect Minecraft circles and spheres with block charts, hollow/filled modes, and exact block counts.

Quick Answer:Enter your desired circle diameter to generate a symmetrical pixelated block grid using the midpoint circle Bresenham algorithm.

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How to Use the Minecraft Circle Generator (Pixel Dome & Chart)

1Enter your circle diameter in blocks (e.g., 17 or 21 blocks).
2Choose your style: Hollow Outline or Filled Disc.
3Review the total number of blocks needed in survival mode.
4Use the interactive visual pixel grid as a construction guide while placing blocks in-game.

(x - r)² + (y - r)² ≤ (r + 0.5)²

Evaluates whether each block coordinate (x, y) falls within the circular boundary (x - r)² + (y - r)² ≤ r².

Input: Diameter = 17, Style = Hollow Outline

Explanation: Creates a smooth 17×17 circular outline requiring 52 blocks per layer.

Result: 52 Blocks Total

Input: Diameter = 7, Style = Hollow Outline

Explanation: Compact symmetrical circle with 16 blocks.

Result: 16 Blocks Total

Input: Diameter = 21, Style = Filled Disc

Explanation: Completely paved circular floor requiring 349 blocks.

Result: 349 Blocks Total

How do you make a smooth circle in Minecraft?▼

Follow a symmetrical block stepping pattern (e.g., 5-2-1-2-5). The generator calculates these exact step dimensions for any diameter.

Should I build an odd or even diameter circle?▼

Odd diameters are easier to build because they have an exact 1-block center point, making them popular for towers and domes.

How many blocks do I need for a 15-block circle?▼

A hollow 15-block circle requires 44 blocks per vertical layer. A filled 15-block circle requires 177 blocks.

Can I use this for spheres and domes?▼

Yes! A dome is simply a stack of circles with increasing diameters from top to bottom.

Is this tool free?▼

Yes, 100% free with interactive browser-based grid rendering.

Diameter	Hollow Outline Blocks	Filled Disc Blocks	Center Type
7 blocks	16 blocks	37 blocks	Single 1×1 center
11 blocks	32 blocks	97 blocks	Single 1×1 center
15 blocks	44 blocks	177 blocks	Single 1×1 center
17 blocks	52 blocks	225 blocks	Single 1×1 center
21 blocks	64 blocks	349 blocks	Single 1×1 center

•Building with an even diameter when you need a single central block (odd diameters like 15, 17, or 21 have a single 1×1 center; even diameters have a 2×2 center).
•Losing track of row counts (our tool lists blocks per row to help keep builds symmetrical).
•Forgetting to clear a flat perimeter before laying foundation blocks in survival mode.

•Building circular castle towers, lighthouse foundations, and wheat farm rings in Minecraft.
•Creating glass observation domes and Nether portal frames.
•Planning pixel art, cross-stitch, and perler bead circular patterns.

✓Odd diameter circles (e.g., 15, 17, 19) have a single center block (1×1), ideal for towers with central spiral staircases.
✓Even diameter circles (e.g., 16, 18, 20) have a four-block center (2×2), ideal for double doors and dual-track railways.

Last reviewed & updated: 2026-11-01

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