Smart Decking Calculator

DixonAppStudio LLC

Contains adsIn-app purchases

About this app

Smart Decking Calculator is a contractor-grade estimating toolkit for decks. 66 calculators, every one of them free, and all of them work with no signal at all.

Stop guessing at the lumber yard. Enter your deck once and get board counts, joist and beam spans, stair stringers, footing depths, fastener counts and a priced quote you can hand to a client before you leave the driveway.

WORKS IN THE BACKYARD
Every calculation runs on your phone. No account, no sign-in, no connection. Most decks get built where the signal does not reach, so nothing here depends on one.

HOW MANY DECK BOARDS DO I NEED?
Enter length, width, board width and gap. You get the row count, the boards to buy at your stock length, and a waste allowance you control. Wood or composite, straight or diagonal, with picture-frame borders handled properly.

DECK SURFACE
✓ Deck board calculator with board width, gap and waste
✓ Board and gap spacing for wood and composite
✓ Picture-frame borders and inside corners
✓ Fascia, skirting and joist tape
✓ Stain and sealer coverage by coat
✓ Resurfacing mode for keep-the-frame jobs
✓ Multi-level and multi-section projects
✓ Under-deck drainage

STRUCTURE, CHECKED AGAINST IRC R507
The part most apps skip. Pick species, size and spacing and see the maximum allowable span straight from the published table, with a clear pass or fail against the span you entered.
✓ Joist span checker: 2x6, 2x8, 2x10 and 2x12
✓ Beam sizing and post spacing
✓ Post count, footing diameter and depth
✓ Concrete by bag or by cubic yard
✓ Frost depth guidance for your region
✓ Ledger fastener spacing and flashing
✓ Blocking and bridging
✓ Live load, snow load and wind

CAN MY DECK HOLD A HOT TUB?
Hot Tub Mode takes the filled weight and occupant load, divides by the footprint and tells you whether the framing is in range or needs reinforcing. Worth five minutes before anyone fills anything.

STAIRS AND RAILINGS
✓ Stair calculator: risers, treads and total run
✓ Stair stringer layout with cut dimensions
✓ Stair material and landing quantities
✓ Railing post and rail quantities
✓ Baluster spacing to the 4-inch sphere rule
✓ Handrail and guardrail height checks

COST AND BUSINESS
✓ Material cost from your own price list
✓ Labor estimator with your rates
✓ Markup, margin and profit
✓ Customer quote generator
✓ Shopping list and full bill of materials
✓ Deck removal and demolition line items
✓ Return-on-investment estimate for homeowners
✓ Job cost tracker: quoted versus actual

YOUR PHONE AS A JOBSITE TOOL
✓ Digital level and plumb check
✓ Deck slope finder for drainage
✓ Distance measure

REFERENCE YOU CAN CHECK ON SITE
Span tables, wood species comparison, composite brand comparison, fastener and hardware guide, a glossary in plain language, and a permit and inspection checklist.

WHAT PRO CONTRACTOR ADDS
The math is never locked. All 66 calculators stay free forever, because a homeowner sizing one deck should never hit a wall. Pro is for the business side:
✓ Branded PDF quotes with your logo and no watermark
✓ Unlimited saved projects
✓ Unlimited price list
✓ CSV price import and export
✓ Home screen widgets

One purchase, yours for good. No subscription, ever. Prefer to keep it simple? Remove Ads Forever is a separate one-time option.

WHY CONTRACTORS KEEP IT ON THE HOME SCREEN
Your price list, labor rates, default waste percentage and business details are saved once and reused on every job. Quote a deck in the driveway, save it, and pull it back up when the client calls two weeks later.

STRUCTURAL DATA AND YOUR LOCAL CODE
Span and footing figures come from published IRC R507 tables and are provided as planning aids. Codes vary by county, amendments are common, and your inspector has the final say. Always confirm structural work against your local adopted code before you build.

Built by DixonAppStudio for people who build decks for a living, and for anyone who wants the numbers right the first time.

What’s new

Ads now run on this app's own AdMob account, so support goes to the right place.
Continued fixes and stability improvements.