Sheharyar Shahid

Sheharyar founded Do The Calculation to fix a problem he kept meeting in spreadsheet work: a model that answers a question correctly is no use to anyone who cannot open it, read it, or tell where its numbers came from. The site is that idea built out. Every calculator runs in the visitor's own browser, states the expression it actually evaluates, and names a published source wherever one genuinely determines the arithmetic.

His work spans the whole stack behind that. The shared calculation cores that the tools draw on, the registries that hold each calculator's formula, inputs, units and citations, and the page architecture that renders them. The same discipline carries to the spreadsheet side, where the downloadable planners are built to mirror their web counterparts formula for formula rather than approximating them.

He is equally deliberate about what the site does not claim. A calculator carries a citation only where a published source determines the formula, and where none exists the page says so plainly instead of implying an authority it has not earned. Most arithmetic tools are definitional, and saying that is more useful to a reader than dressing them up.