Muhammad Shakeel Alvi
Owner & Full-Stack Developer
Shakeel Alvi is the owner and full-stack developer of Concrete Calculator Max, who built and maintains every calculator on the site.
Role
Shakeel Alvi is the owner and full-stack developer of Concrete Calculator Max. He built every calculator on the site and maintains all of them himself — there's no separate content team and no outside agency involved. If a formula needs a fix or a page breaks, he's the one who does it. His work here spans web development, concrete estimating tools, and construction calculators generally, not just this one site's codebase. On the development side, it's a one-person operation: he writes the code, the calculators, and the articles that go with them.
How the calculators are built and tested
Every calculator draws from a shared calculation engine, lib/calc-engine.ts, instead of each tool reinventing its own math from scratch. That engine is unit-tested: 76 tests across 17 suites, run with vitest, covering density constants, the conversions between cubic yards, cubic feet, and cubic meters, pounds to kilograms to tons, bag-count math, and round-trip consistency — a value that goes through a conversion and back should come out where it started. To be precise about what that testing actually covers: the shared calculation engine is unit-tested, not every individual calculator component built on top of it. That distinction matters more than it sounds like it should.
Editorial process
Shakeel builds and writes; he doesn't review his own engineering assumptions. That's a separate job, done by Qasim — a registered civil engineer who checks the calculation assumptions and methodology on each tool before it gets called reviewed. The review date is recorded per calculator as the review actually happens, not stamped the same across the board on some fixed schedule. It's a two-step model on purpose: one person builds and writes, a different person with an outside credential checks the engineering. Read our editorial standards for the full breakdown of what that review does and doesn't cover.
Contact
General questions go to info@concretecalculatormax.com.
Areas of Expertise
- Web development
- Concrete estimating tools
- Construction calculators