gizmobench

Block Circle Generator

Most block circle pages draw the shape and stop. This one prints the build guide beside the grid: every row as a picture, the number of blocks that row needs, and a total that is the same number as the filled cells in the CSV and the PNG, so the pile you gather is the pile you place. Sides run from 1 to 501, a width and a height that differ give an ellipse instead of a circle, and an even width is centred on the line between the two middle columns so it stays symmetric on both axes rather than leaning a block to one side.

Rows15 × 15 · outline
  1. row 1·····XXXXX·····5
  2. row 2···XX·····XX···4
  3. row 3··X·········X··2
  4. row 4·X···········X·2
  5. row 5·X···········X·2
  6. row 6X·············X2
  7. row 7X·············X2
  8. row 8X·············X2
  9. row 9X·············X2
  10. row 10X·············X2
  11. row 11·X···········X·2
  12. row 12·X···········X·2
  13. row 13··X·········X··2
  14. row 14···XX·····XX···4
  15. row 15·····XXXXX·····5
Blocks needed40
Width
Height
Shape
Style

15 by 15 block circle, outline style, 40 blocks. The widest row is 5 blocks, and the row list above adds up to the same 40.

  • Odd width, 15one centre block
    40 blocks, 15 rows
  • Even width, 16the centre falls between blocks
    44 blocks, 16 rows
  • Width 501the supported maximum
    1416 blocks, 501 rows
The count matches the grid. Blocks are chosen by distance from the centre of the grid, the convention every row list here is generated from, and the total equals the filled cells in the CSV and the PNG, so what you gather is what you place. An even width has no single centre block: the circle is centred on the line between the two middle columns, which keeps it symmetric on both axes. Sides run from 1 to 501 blocks, and a side outside that says so rather than drawing something smaller. Minecraft is named here only to say what the output suits: this is not made by or connected to Mojang, and it reads nothing from your game.

Common questions

How do I build a circle out of blocks, row by row?
Type the width you want and read the list on the right of the grid. Each line is one row of the build: a picture of that row, with X where a block goes, and the number of blocks it takes. Past 120 blocks wide the picture would be wider than the pane, so each row names its columns instead and keeps the same count. Place the top row first, then work down. The total under the list is how many blocks to gather before you start, and it is the same number as the blocks drawn in the grid, so nothing is left over.
What happens on an even width, like 16?
An even width has no single middle column, so the centre of the circle falls on the line between the two middle columns rather than inside a block. Both halves then come out identical, and the shape is symmetric left to right and top to bottom, which is what a build looks wrong without. A 16 wide outline is 44 blocks with a top row of 6; the 15 wide outline next to it is 40 blocks with a top row of 5.
How many blocks does a circle of a given diameter need?
It depends on the style as much as the size. A 15 wide outline is 40 blocks, the same circle two blocks thick is 76, and filled in solid it is 177. An 11 wide outline is 28. Rather than memorising a table, type the size: the total is printed under the row list for whatever width and height you enter, up to 501.
What is the difference between outline, thick and filled?
Outline keeps the single ring of blocks at the edge of the circle, which is the usual wall. Thick keeps that ring and the next one inside it, so the wall is two blocks deep wherever the circle is wide enough to hold two rings; on a very small grid the second ring has nowhere to go and thick comes out the same as the outline. Filled keeps every block inside the circle, which is what a floor or a roof needs. A 15 wide circle is 40 blocks as an outline, 76 thick and 177 filled, and the grid, the row list and the total all follow whichever you pick.
Is this connected to Minecraft or Mojang?
No. It is an independent tool that draws a circle on a square grid, and Minecraft is named only to say what that output suits. It is not made by, endorsed by or connected to Mojang, it reads nothing from your game or your account, and the same grid works for any square-grid build: pixel art, perler beads, cross stitch or a tile floor.
What is the largest circle it will draw, and does it upload anything?
Sides run from 1 to 501 blocks, and a side outside that range is refused with a message naming the limit and the number you typed, rather than being quietly trimmed to something smaller. Nothing is uploaded and no account is needed: the grid, the row list, the CSV and the PNG are all worked out in your browser.

Blocks are chosen by distance from the centre of the grid, and the total always equals the filled cells in the row list and the export. Even widths have no single centre block, so the circle is centred between blocks and stays symmetric on both axes. Minecraft is named as what the output suits: this is not made by or connected to Mojang.