Minecraft circle: 21×21

A 21-block hollow circle takes 56 blocks; a filled 21-block disc takes 349.

Counts are for one layer. The chart shows a hollow ring 1 block thick. Rows run north to south and columns west to east, both starting at 1. How the calculations work
Hollow ring
56
Filled disc
349
Center
Odd diameter: the center is a single block.

Open this circle in the generator

Change the thickness, wall height or make it an oval there, then build it row by row.

Rows, north to south
RowBlocksColumns to fill (from the west)
178–14
246–7, 15–16
325, 17
424, 18
523, 19
622, 20
722, 20
821, 21
921, 21
1021, 21
1121, 21
1221, 21
1321, 21
1421, 21
1522, 20
1622, 20
1723, 19
1824, 18
1925, 17
2046–7, 15–16
2178–14

Each row lists the columns to fill, counted from the west edge of the chart.

Other sizes

All circle sizes

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