Deck Calculator
Plan a deck build with full materials breakdown. Estimates deck boards, joists, beams, screws, and total project cost.
Frequently Asked Questions
How much does it cost to build a deck?
A pressure-treated deck costs $15 to $30 per sq ft installed. Composite decks range $30 to $60 per sq ft.
What is standard deck board spacing?
Leave 1/8 inch between deck boards for drainage and expansion. Joist spacing is typically 16 inches on center.
How long do deck boards last?
Pressure-treated lumber: 15 to 20 years. Cedar: 15 to 20 years. Composite: 25 to 50 years with proper maintenance.