Check stock-board prices
Use your selected length and material to confirm stock, true dimensions and unit price. Enter that price above to calculate a budget.
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Deck Board Calculator
& Buying Planner
Estimate decking board quantities for a rectangular deck, compare stock lengths, adjust cut-and-waste allowance, and build a shopping list using your actual store prices. Free and no account required.
Plan your deck. Buy smarter. Waste less.Your board estimate
Updates liveDecking boards only — board subtotal excludes fasteners, framing, labor, tax and delivery. Not a structural design.
Deck area
192 sq ft
Boards to buy
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Decking subtotal
Add prices
Layout preview
Illustrative top view only; not a construction or framing plan.
Project settings
Estimated shopping list
| Item | Quantity | Amount |
|---|---|---|
| — | — |
Net required vs. whole boards purchased
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Scrap % is a rough material-length comparison, not a verified cutting diagram. The calculator does not reuse cutoffs.
Optional fasteners & hardware estimate
Select compatible board and fastener options.
Hardware counts are conceptual, exclude borders, stairs, special fixings and brand-specific pack requirements. Confirm installation instructions before purchase.
Stock boards are estimated conservatively; verify cuts, board-end support, and availability before buying.
Board unit price: Not entered. Additional framing, hardware, stairs, railings, delivery, labor and taxes are not included.
How the estimate worksSee formula and assumptions
Important: Estimates are for planning purposes only. Verify local building codes, manufacturer installation directions, structural requirements and actual store prices before purchasing.
Shopping-link transparency: The store links shown here are ordinary, unpaid links. We do not show live prices, claim retailer partnerships or receive a commission from these links. If approved paid recommendations are added later, they will be labeled beside each applicable link. Calculator results are independent of any referrals.
Plan with clearer numbers
How to measure your deck
Simple rectangular measurements, board direction and gaps explained in plain English.
Read the measuring guideWhat your budget might miss
Use a checklist for fastening, framing, permits, labor, taxes, disposal and delivery.
Open budget checklistFrequently asked questions
How many deck boards do I need?
Measure the dimension perpendicular to the board direction, account for actual face width and spacing, then calculate segments along each run. The calculator uses conservative stock-board counts and adds your selected allowance.
How many hidden deck fasteners do I need?
Clip quantities depend on the approved board-and-fastener system, board courses, support intersections, perimeters and product instructions. This tool shows only a starting-point estimate, not a manufacturer-approved pack count.
Can I use hidden clips with square-edge boards?
Many side-groove clips require matching grooved-edge boards. Some systems use separate adapters or alternative mechanisms. Check the exact brand and model before buying.
What does estimated scrap rate mean?
It compares the total purchased board length against the estimated installed length. It includes whole-board rounding and the chosen contingency; it is not a cutting plan or guaranteed leftover amount.
Does the tool include joists and footings?
No. This version estimates decking boards only. Structural supports must be designed based on actual conditions and applicable codes.
Are prices up to date?
DeckWise does not claim live retailer prices. Enter a current quote or shelf price for the stock board you plan to purchase.
Can I use the output as a permit plan?
No. This is an early purchasing estimate, not an engineered design, permit document or manufacturer-approved cutting plan.