Deck Material Calculator — Boards & Cost
Enter your dimensions for an instant answer — the exact quantity to buy (waste included), a material cost, and an estimated installed cost. Change any figure to update the result live.
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
461linear ft
Exact need: 419 linear ft · plus 10% waste allowance
Material cost
$806.75–$2,766
Installed (US avg)
$4,071–$7,182
Shopping list
| ITEM | QTY | PRICE RANGE |
|---|---|---|
| linear ft | 461 | $806.75–$2,766 |
| Estimated material total | $806.75–$2,766 |
Companion materials
- 16 ft boards: ≈ 29 boards
Material spec & worked example
Waste allowance
10%
Typical price
$1.75–$6 linear feet of decking
16 ft × 12 ft deck: you need 419 linear ft (buy 461 with waste), about $806.75–$2,766 in materials. See how we calculate this →
Popular sizes
Installed cost by state
See a regionally-adjusted installed estimate — materials, labor, total.
View cost by state →Frequently asked
How many deck boards do I need?
Divide the deck area by the coverage of one board (board width in feet × length), then add ~10% for waste. The calculator returns linear feet and board counts.
How much does a deck cost to build?
Installed decks average $20–$45 per square foot depending on material and region. See the cost-by-state pages for a local estimate.