Deck/Patio Material Calculator
Calculate the number of decking boards and fasteners required to build your wood or composite deck.
Boards RequiredNaN boards
Total Deck AreaNaN sq ft
Estimating Decking Boards
Building a deck requires precise material estimation. This calculator determines how many surface decking boards you need based on the dimensions of your deck and the width of your boards.
Factoring in Gaps
When laying deck boards, you must leave a gap for water drainage and wood expansion. A standard gap is 1/4 inch. This calculator automatically accounts for this gap when determining how many rows of boards will fit across the deck's width.
Frequently Asked Questions
Does this calculate joists and posts?
No, this calculator specifically estimates the surface decking boards and the fasteners required to secure them. Substructure calculations depend heavily on local building codes and load requirements.