Deck Calculator
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Enter your deck dimensions to get the complete materials list — decking boards, joists, beams, footings, and concrete bags. Based on standard 16" OC framing.
1. Deck dimensions
Deck area: 192 sq ft
2. Decking board size
Your Deck Materials List
For a 16×12 ft deck (192 sq ft)
🪵 Decking
Deck boards (2×6 deck board)37 boards
Board length needed12 ft each
🏗️ Framing
Joists (16" OC, 2×8)13 joists × 12 ft
Beams (2×10)3 beams × 16 ft
🧱 Foundation
Concrete footings9 footings
Concrete (80 lb bags)9 bags
Deck screws (est.)962 screws
Includes 10% waste on decking. Check local codes for footing depth and joist span requirements before building.
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Deck building notes
Permits
Most decks over 30 inches from grade require a permit. Check local building codes before starting.
Footing depth
Footings must go below the frost line in your area — typically 18–48 inches depending on climate zone.
Wood type
Use pressure-treated lumber for ground contact and structural framing. Cedar or composite decking for the surface.