About DeckCalculators.com

Who built this

DeckCalculators.com is built and maintained by Hamid Aurangzaib, a full-stack developer and the builder of DeckCalculators.com.

That is the whole claim, and the omission in it is deliberate. This site is not written by a licensed deck builder, a carpenter, a structural engineer or a code official. Nobody here is going to tell you they have framed two hundred decks, because nobody here has.

Plenty of sites in this category imply a trade background they cannot evidence, on the theory that readers want a craftsman's voice. Readers want a correct number. A calculator is a piece of software with published code guidance behind it, and the honest question is not "who wrote this" but "where did the number come from and can I check it". That question has an answer on every page of this site.

Why this site exists

Most deck calculators are built around composite decking, because most deck websites are owned by companies that sell composite decking. It is a legitimate business and it leaves a large hole: the majority of decks in the United States are pressure-treated pine, and pine decks generate questions about staining schedules, board movement, weathering and repair that a composite manufacturer has no commercial reason to answer well.

The other common failure is quieter. A great many calculators work from nominal lumber sizes rather than actual ones, quote a single national average cost, and present a stain coverage figure copied off a can without accounting for whether the wood is new, weathered or rough-sawn. Each of those produces a number that is confidently wrong, and none of them show their working, so you cannot tell.

So: wood is the default here. Composite is covered honestly — including where it genuinely wins — but it is not the centre of gravity.

How the numbers are produced

Every constant these calculators use lives in one typed data layer, and every entry in it carries two things: a source drawn from a registry of 30 cited references, and a confidence level saying whether the value is read from a building code, derived from one by a stated rule, a defensible industry typical, or a planning estimate.

No number is written into a page by hand. The build fails if a component holds a constant of its own. That sounds like an internal engineering detail, and it is, but it has a direct effect on you: the methodology page is generated from that same data, so it physically cannot describe a figure the calculators are not actually using.

Structural values get a second layer on top. Span thresholds are read from published prescriptive residential deck guidance and marked unverified until someone has checked them back against the source document — 4 records are in that state right now — and the build refuses to publish any calculator that would render one. That is slower than shipping. It is also the only version of this site worth building.

Prices carry a survey date, shown on every page that outputs dollars, and a build older than nine months fails rather than quietly serving stale figures.

What this site is not

• Not a substitute for your building department. Prescriptive guidance is a set of pre-worked conservative cases, not a design for your deck. Your jurisdiction adopts its own code edition, amends it, and has the final say. They are also, in our experience, much more helpful than people expect.
• Not engineering. Heavy fixed loads, unusual geometry, high snow or wind exposure — any of these puts a deck outside prescriptive tables and into engineered design. The calculators say so rather than returning a number anyway.
• Not a lead directory. No city pages, no "deck builders near me", no contractor-matching forms, no business schema. This site is a tool.
• Not gated. You will never have to give an email address to see a result. Optional fields exist and they come after the answer, never before it.

How this is paid for

Nothing on this site is monetised today. When that changes it will be through advertising and, on pages where the reader is weighing hiring somebody, relevant third-party services — visibly, as advertising, rather than dressed up as a recommendation. Calculator results will not change based on who is paying. If that ever stops being true, this paragraph should be the first thing to go, and you should hold us to it.

Reporting an error

If a figure here is wrong, that is worth more to us than a compliment — particularly a structural one. Email contact@deckcalculators.com, or use the contact page, which lists exactly what to include so a correction can be acted on rather than guessed at.

Corrections to structural data are looked at the same week. Where a published figure turns out to be wrong, it gets fixed and the change is noted on the methodology page rather than edited away silently.