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Deck Board Calculator
Enter your deck's dimensions, board width, gap spacing, and standard board length to calculate boards needed.
How to use this tool
- 1Enter your deck's length and width in feet.
- 2Enter the board width and gap between boards in inches.
- 3Enter the standard board length sold at your supplier.
- 4See total boards needed and estimated cost.
Frequently asked questions
Does this account for a picture-frame border or diagonal pattern?+
No — this assumes boards run straight across the deck width; add 10-15% extra material for borders, diagonal layouts, or complex cuts.
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