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CraftShape

50 Block Circle Generator

Fifty blocks across is megabuild territory: a colosseum, a stadium wall or the base of a very large dome. The blueprint below is calculated the same way as every other size, so the curve stays perfectly symmetrical on both axes.

Controls

Dimensions

Dimensions

blocks

This page is preset to one size — change it freely to explore others.

blocks

Always exactly half the diameter. An odd diameter has a half-block radius but still uses one single centre block.

Walls

Walls

Fill mode
blocks
Appearance

Appearance

Block color

Mirror mode shows one quadrant only. Build it, then mirror it left/right and front/back for a perfectly symmetrical shape.

Circle Generator

50 x 50 · 172 blocks

Drag to pan, scroll or pinch to zoom, hover a cell for coordinates.

Build summary

Diameter
50
Radius
25.0
Total blocks
172
Rows used
50

Symmetry check: mirrors left to right and mirrors top to bottom.

Ring built between the outer edge and an inner edge 1 block inside it.

Row-by-row instructions

  1. Row 1:skip 20 spaces, place 10 blocks
  2. Row 2:skip 16 spaces, place 4 blocks, leave 10 spaces, place 4 blocks
  3. Row 3:skip 14 spaces, place 3 blocks, leave 16 spaces, place 3 blocks
  4. Row 4:skip 12 spaces, place 2 blocks, leave 22 spaces, place 2 blocks
  5. Row 5:skip 11 spaces, place 2 blocks, leave 24 spaces, place 2 blocks
  6. Row 6:skip 9 spaces, place 2 blocks, leave 28 spaces, place 2 blocks
  7. Row 7:skip 8 spaces, place 2 blocks, leave 30 spaces, place 2 blocks
  8. Row 8:skip 7 spaces, place 2 blocks, leave 32 spaces, place 2 blocks
  9. Row 9:skip 6 spaces, place 2 blocks, leave 34 spaces, place 2 blocks
  10. Row 10:skip 5 spaces, place 2 blocks, leave 36 spaces, place 2 blocks
  11. Row 11:skip 5 spaces, place 1 block, leave 38 spaces, place 1 block
  12. Row 12:skip 4 spaces, place 1 block, leave 40 spaces, place 1 block
  13. Row 13:skip 3 spaces, place 2 blocks, leave 40 spaces, place 2 blocks
  14. Row 14:skip 3 spaces, place 1 block, leave 42 spaces, place 1 block
  15. Row 15:skip 2 spaces, place 1 block, leave 44 spaces, place 1 block
  16. Row 16:skip 2 spaces, place 1 block, leave 44 spaces, place 1 block
  17. Row 17:skip 1 space, place 2 blocks, leave 44 spaces, place 2 blocks
  18. Row 18:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  19. Row 19:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  20. Row 20:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  21. Row 21:place 1 block, leave 48 spaces, place 1 block
  22. Row 22:place 1 block, leave 48 spaces, place 1 block
  23. Row 23:place 1 block, leave 48 spaces, place 1 block
  24. Row 24:place 1 block, leave 48 spaces, place 1 block
  25. Row 25:place 1 block, leave 48 spaces, place 1 block
  26. Row 26:place 1 block, leave 48 spaces, place 1 block
  27. Row 27:place 1 block, leave 48 spaces, place 1 block
  28. Row 28:place 1 block, leave 48 spaces, place 1 block
  29. Row 29:place 1 block, leave 48 spaces, place 1 block
  30. Row 30:place 1 block, leave 48 spaces, place 1 block
  31. Row 31:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  32. Row 32:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  33. Row 33:skip 1 space, place 1 block, leave 46 spaces, place 1 block
  34. Row 34:skip 1 space, place 2 blocks, leave 44 spaces, place 2 blocks
  35. Row 35:skip 2 spaces, place 1 block, leave 44 spaces, place 1 block
  36. Row 36:skip 2 spaces, place 1 block, leave 44 spaces, place 1 block
  37. Row 37:skip 3 spaces, place 1 block, leave 42 spaces, place 1 block
  38. Row 38:skip 3 spaces, place 2 blocks, leave 40 spaces, place 2 blocks
  39. Row 39:skip 4 spaces, place 1 block, leave 40 spaces, place 1 block
  40. Row 40:skip 5 spaces, place 1 block, leave 38 spaces, place 1 block
  41. Row 41:skip 5 spaces, place 2 blocks, leave 36 spaces, place 2 blocks
  42. Row 42:skip 6 spaces, place 2 blocks, leave 34 spaces, place 2 blocks
  43. Row 43:skip 7 spaces, place 2 blocks, leave 32 spaces, place 2 blocks
  44. Row 44:skip 8 spaces, place 2 blocks, leave 30 spaces, place 2 blocks
  45. Row 45:skip 9 spaces, place 2 blocks, leave 28 spaces, place 2 blocks
  46. Row 46:skip 11 spaces, place 2 blocks, leave 24 spaces, place 2 blocks
  47. Row 47:skip 12 spaces, place 2 blocks, leave 22 spaces, place 2 blocks
  48. Row 48:skip 14 spaces, place 3 blocks, leave 16 spaces, place 3 blocks
  49. Row 49:skip 16 spaces, place 4 blocks, leave 10 spaces, place 4 blocks
  50. Row 50:skip 20 spaces, place 10 blocks

Block counts for a 50 block circle

  • Hollow outline (1 block wall): 172 blocks
  • Filled disc: 1,976 blocks
  • Widest row: 50 blocks
  • Center: a 2x2 center square

Building advice for this size

  • Flatten the full 50x50 area first. Uneven ground is the main reason large circles end up looking lopsided.
  • Build one quadrant, screenshot or note the run lengths, then repeat it three times rotated around the center.
  • Budget around three stacks for the outline and about twenty-five stacks for a filled floor.
  • Long straight-looking runs are normal at this size — the top and bottom of the ring are over a dozen blocks wide.

Other circle sizes

Smaller: 40 block circle. Larger: 64 block circle. Or open the full circle generator for any diameter up to 256.

Frequently asked questions

How many blocks are in a 50 block circle?
A hollow 50 block circle uses 172 blocks. A filled 50 block disc uses 1,976 blocks, which is about thirty-one stacks.
How do I keep a 50 block circle symmetrical?
Use mirror mode to build a single quadrant, then copy it around the center. Verifying one quarter is far faster than checking 172 individual blocks.
What is the largest circle worth building by hand?
Most builders stop enjoying it past roughly 60 blocks. Beyond that, build the ring one quadrant at a time over several sessions, or scale the design down.

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