Decking Calculator
Estimate how many deck boards, screws, and total cost you need for your deck project.
Decking Board Quantity Calculator
Calculate how many deck boards you need based on deck dimensions, board size, gap width, and waste factor.
Accounts for board coverage width, gaps between boards, and waste from cuts.
Your Decking Estimate
Deck Area
—
sq ft
Linear Feet
—
of decking
Boards Needed
—
incl. waste
Screws (est.)
—
≈ — lbs
Board cost only — does not include hardware, substructure, or labor.
Show calculation details
Enter your deck dimensions, choose a board type, and get an instant estimate for boards needed, screws, and total cost including your preferred waste factor.
Related Materials
Pressure-treated lumber is dimensional softwood (typically Southern Yellow Pine) infused with preservative chemicals under pressure to resist rot, decay, and insect damage. The most common decking and structural lumber for outdoor applications.
Composite decking combines wood fiber and recycled plastic (PVC or polyethylene) into a board that mimics the look of natural wood with dramatically lower maintenance requirements. The fastest-growing segment of the decking market, with top brands including Trex, TimberTech, and Fiberon.
Western Red Cedar (Thuja plicata) is a premium natural decking choice valued for its natural decay resistance, dimensional stability, and warm appearance. The go-to natural wood deck board for contractors and homeowners seeking a traditional aesthetic.
Ipe (Handroanthus spp., formerly Tabebuia) is an extremely dense Brazilian hardwood prized for exceptional durability, fire resistance, and a rich dark-brown appearance. Often called "ironwood," it's the premium choice for high-end residential and commercial decks.