Deck Board Spacing Calculator

Primary output 25

Enter dimensions in inches. Use actual board width and subtract any picture-frame border from the deck width first.

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Boards across
25
Achieved gap 0.250 in (≈ 1/4 in)
Edge margin 0.250 in (≈ 1/4 in)
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Board-start marks

Showing first 12 of 25 marks. Every 5th board is highlighted for tape-measure scanning.

  1. #10.250 in (≈ 1/4 in)
  2. #26.000 in (≈ 6 in)
  3. #311.750 in (≈ 11 3/4 in)
  4. #417.500 in (≈ 17 1/2 in)
  5. #523.250 in (≈ 23 1/4 in)
  6. #629.000 in (≈ 29 in)
  7. #734.750 in (≈ 34 3/4 in)
  8. #840.500 in (≈ 40 1/2 in)
  9. #946.250 in (≈ 46 1/4 in)
  10. #1052.000 in (≈ 52 in)
  11. #1157.750 in (≈ 57 3/4 in)
  12. #1263.500 in (≈ 63 1/2 in)
  13. #1369.250 in (≈ 69 1/4 in)
  14. #1475.000 in (≈ 75 in)
  15. #1580.750 in (≈ 80 3/4 in)
  16. #1686.500 in (≈ 86 1/2 in)
  17. #1792.250 in (≈ 92 1/4 in)
  18. #1898.000 in (≈ 98 in)
  19. #19103.750 in (≈ 103 3/4 in)
  20. #20109.500 in (≈ 109 1/2 in)
  21. #21115.250 in (≈ 115 1/4 in)
  22. #22121.000 in (≈ 121 in)
  23. #23126.750 in (≈ 126 3/4 in)
  24. #24132.500 in (≈ 132 1/2 in)
  25. #25138.250 in (≈ 138 1/4 in)
Linear feet 440.0 ft
Joists 13
Fasteners 650