7 block circle in Minecraft (radius 3)
A 7-block-wide circle takes 16 blocks for a 1-block outline and 37 to fill it. Go around each quarter in runs of 3·1·3. The centre is a single block, because 7 is odd.
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| Diameter | 7 blocks (radius 3 from the centre block) |
| Outline, thin wall (diagonal steps) | 16 |
| Outline, thick wall (no diagonal gaps) | 24 |
| Filled disc | 37 |
| Flat edge on each side | 3 |
| 5-high tower wall | 80 · 1×64 + 16 |
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 3 blocks out from the centre block in all four directions and mark those four points.
- Place the four flat edges of 3. Centre each flat edge on one of the four points: 1 blocks either side of it.
- Fill each corner with 1. 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 80 blocks). A dome or sphere shrinks the ring as it goes up.
All 7 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.
- 3
- 1-1
- 1-1
- 1-1
- 1-1
- 1-1
- 3
Nearby sizes
| Diameter | Outline | Filled | Quarter pattern |
|---|---|---|---|
| 5 | 12 | 21 | 3-3 |
| 6 | 16 | 32 | 4-4 |
| 7 | 16 | 37 | 3-1-3 |
| 8 | 20 | 52 | 4-1-4 |
| 9 | 24 | 69 | 5-1-5 |
| 10 | 28 | 80 | 4-2-1-4 |
Every size from 5 to 128 in one table · How to build a perfect circle
Questions
How many blocks is a 7 block circle?
16 blocks for a 1-block outline with diagonal steps, 24 for an outline with no diagonal gaps, and 37 for a filled disc.
Should I build 7 or 6?
7 is odd, so the circle has one centre block: doors, beacons and pillars line up with the middle. 6 has a 2×2 centre instead.
How many blocks for a 7 sphere or dome?
A hollow 7 block sphere with a 1-block shell takes 98 blocks; a hollow 7 dome (4 layers, open at the bottom) takes 53. Plan them layer by layer in the sphere generator or the dome generator.
Thin or thick outline?
A thin outline (16 blocks) steps diagonally, so mobs and water can slip through the corners. A thick outline (24 blocks) adds a block at every step, which makes a sealed wall.