From one basement stair to 93 calculators
Every calculator on this site started from the same kind of specific, annoying, real-world question — not from a keyword list.
Most stair calculators online do one of two things badly. Either they give a single number — a riser height, an angle — with no view of how it fits the rest of the stair, or they're generic construction calculators with "stair" bolted onto the title, using formulas that were never checked against an actual code section. Neither tells you why the number came out the way it did, or flags it when your inputs push you outside what's actually buildable.
That gap is what motivated this site: the idea started with one real question during a basement remodel — how many steps, at what riser height, would fit a rise that didn't divide evenly into a comfortable 7-inch step. Answering it meant cross-referencing the IRC, running the 2R+T comfort formula, and checking the result against the available floor opening — three lookups for one decision.
That question came up on a project Elena was consulting on with Marcus — the two had worked together before, on and off, across a few residential jobs where her structural sign-off and his framing crew's work had to line up. When the idea to build something out of it came up, Elena was the one who pushed it from "we should really have a better tool for this" to an actual plan, and pulled in Jordan — someone the two of them had worked with before — to build it. mystaircalculator.com is the three of them, still running it together: independently owned and operated by Marcus Hale, Elena Voss, and Jordan Okonkwo, not a company or agency-run site.
Site launches with all 93 calculators live
Every category — geometry, structural, material, railing, code, cost, specialty and conversion — went live at once, each carrying a last-verified date and, where relevant, a cited code reference.
