41 block circle in Minecraft (radius 20)
A 41-block-wide circle takes 112 blocks for a 1-block outline and 1,313 to fill it. Go around each quarter in runs of 9·3·2·2·1·1·1·1·1·2·2·3·9. The centre is a single block, because 41 is odd.
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| Diameter | 41 blocks (radius 20 from the centre block) |
| Outline, thin wall (diagonal steps) | 112 |
| Outline, thick wall (no diagonal gaps) | 160 |
| Filled disc | 1,313 |
| Flat edge on each side | 9 |
| 5-high tower wall | 560 · 8×64 + 48 |
Rule: a block counts when its centre lies inside the circle, the same grid the game uses. Checked 21 Oct 2026.
How to build it
- Mark the centre block. Count 20 blocks out from the centre block in all four directions and mark those four points.
- Place the four flat edges of 9. Centre each flat edge on one of the four points: 4 blocks either side of it.
- Fill each corner with 3·2·2·1·1·1·1·1·2·2·3. After each run, step one block diagonally inward and place the next run. Do the same in all four corners.
- Repeat for each layer. A straight wall is the same ring on every layer (a 5-high wall takes 560 blocks). A dome or sphere shrinks the ring as it goes up.
All 41 rows, north to south
Each row lists its runs of blocks from west to east; "2-2" means 2 blocks, a gap, then 2 blocks.
- 9
- 3-3
- 2-2
- 2-2
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 2-2
- 2-2
- 3-3
- 9
Nearby sizes
| Diameter | Outline | Filled | Quarter pattern |
|---|---|---|---|
| 38 | 104 | 1,124 | 8-3-2-2-1-1-1-1-2-2-3-8 |
| 39 | 108 | 1,201 | 9-3-2-2-1-1-1-1-2-2-3-9 |
| 40 | 112 | 1,264 | 8-4-2-1-2-1-1-2-1-2-4-8 |
| 41 | 112 | 1,313 | 9-3-2-2-1-1-1-1-1-2-2-3-9 |
| 42 | 116 | 1,396 | 10-3-2-2-1-1-1-1-1-2-2-3-10 |
| 43 | 120 | 1,457 | 9-3-3-1-2-1-1-1-2-1-3-3-9 |
| 44 | 124 | 1,528 | 10-3-2-2-1-2-1-2-1-2-2-3-10 |
Every size from 5 to 128 in one table · How to build a perfect circle
Questions
How many blocks is a 41 block circle?
112 blocks for a 1-block outline with diagonal steps, 160 for an outline with no diagonal gaps, and 1,313 for a filled disc.
Should I build 41 or 40?
41 is odd, so the circle has one centre block: doors, beacons and pillars line up with the middle. 40 has a 2×2 centre instead.
How many blocks for a 41 sphere or dome?
A hollow 41 block sphere with a 1-block shell takes 4,242 blocks; a hollow 41 dome (21 layers, open at the bottom) takes 2,153. Plan them layer by layer in the sphere generator or the dome generator.
Thin or thick outline?
A thin outline (112 blocks) steps diagonally, so mobs and water can slip through the corners. A thick outline (160 blocks) adds a block at every step, which makes a sealed wall.