Question 1

How does the deck calculator work?

Accepted Answer

Select your board type and size, enter your deck area (supports rectangular and circular shapes with multiple zones), set the board gap, waste factor, and material price, then click calculate to get the number of boards, total linear footage, screw or fastener count, and total cost including tax.

Question 2

What is the difference between wood and composite decking calculations?

Accepted Answer

Wood decking uses screws for face-fastening, while composite decking typically uses hidden clip fasteners. The standard board widths differ slightly, and recommended waste factors vary — 10% for wood, 5-7% for composite.

Question 3

Do I need to account for the gap between boards?

Accepted Answer

Yes. Wood decking typically needs a 1/8 to 1/4 inch gap for drainage and expansion, while composite decking needs about 3/16 to 1/4 inch. The calculator automatically factors the gap into the board count.

Question 4

How do I choose the right board size?

Accepted Answer

5/4x6 is the most common deck board size with an actual width of 5.5 inches. 2x6 is thicker and stronger, suitable for high-load areas. 2x4 is narrower, good for small areas or decorative patterns. Composite decking comes in proprietary sizes, typically 5.5 inches wide.

🪵 Deck Calculator

⚙️ Unit Settings

📋 Board Settings

📐 Deck Area

💰 Cost Settings

📊 Results