Estimate board rows, stock lengths, fasteners and deck-board cost from your actual dimensions and local prices.
Top view with board direction, joists and a representative seam.
Enter your project and compare the selected stock lengths.
| Length | Boards | Overage | Cost |
|---|
DeckCalculator counts rows from board width and gap, accounts for saw kerf, avoids impractically short seam pieces, then compares your enabled stock lengths using the prices you enter.
Board width plus gap determines how many deck-board rows cover the deck.
Tiny remainder pieces are rebalanced so seam pieces span at least three joist lines.
The lowest-cost practical stock-length plan becomes the recommendation.
Your current calculation is print-ready. Use Project Report / PDF in the calculator controls to create a clean copy from your browser.
Worked examples from the same board, seam, fastener, and stock-length assumptions used in our calculators.
A practical guide to board rows, actual board width, spacing, stock lengths, seams, and how many boards you should purchase.
Count face-screw crossings, account for butt seams, add contingency, and round up to fastener packs you can actually buy.
See how stock-board length changes the board order, butt seams, purchase overage, and price break-even point for the same deck.