Decking Calculator
Estimate deck boards, joists, screws, and cost by deck size, board width, and joist spacing.
LIVE CALCULATION
Deck Boards
42
boards · amount to purchase
+0.0 boards estimated wastage (10%)
Project Summary
Deck Area-
Board Coverage-
Joists Needed-
Deck Screws-
Cost Estimate
Decking (per board)-
Estimated Total-
Calculation Assumptions
Board Size-
Board Gap-
Joist Layout-
Waste Percentage-
Fasteners-
Pricing BasisNot specified
Board counts are estimates for a rectangular layout. Diagonal patterns, curved edges, and hidden-fastener systems increase waste and may need more boards. Verify joist sizing with your local code.
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