Build Tools
Enter your deck size and get an exact material list instantly - boards, joists, posts, and concrete. Ready to start building? Follow the deck guide →
Your Deck Dimensions
How long is your deck?
How far does it stick out?
Top-Down Floor Plan
Longer boards often mean less cutting waste. Compare options for your 16′ × 12′ deck — update the price to match your local lumber yard.
| Board Length | Boards to buy | Waste | Est. cost | Savings |
|---|---|---|---|---|
8′ | 54 | 0.0% | $626 | save $157 |
10′ | 54 | 20.0% | $783 | — |
12′ | 36 | 0.0% | $626 | save $157 |
16′BEST ✓ | 27 | 0.0% | $626 | save $157 |
20′ | 27 | 20.0% | $783 | — |
Board counts use our cut-list optimizer to minimize offcuts. Cost estimates are for decking boards only — check your local store for current lumber prices.
Your 16′ × 12′ deck
Materials list
192 sq ft total
Deck boards
16′ boards · 5/4×6 or 2×6
Joists
Includes rim joists around the frame
Posts
4×4 pressure-treated
Concrete bags
60 lb bags for footings
Estimated material cost
$1,550 – $2,700
192 sq ft at $8–14/sqft — materials only. Varies by region.
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