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Editorial Policy

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Who writes YardageMath

Every calculator and page on YardageMath is built and maintained by me, Sikander Mushtaq. I'm not a licensed contractor or engineer, so I don't give structural or legal advice. What I do is make sure the math is right, the numbers come from real sources, and the pages are easy to use.

How I build a calculator

  1. I start with the formula and check it against at least one manufacturer, industry or government source. Those sources are listed on each page and on How We Calculate.
  2. Every worked example is calculated step by step, then locked in with automated tests, so the calculator always gives the same answer as the worked example.
  3. Every page shows the math, so you can check the result yourself.
  4. Where a manufacturer has its own calculator, I compare results. For example, our concrete bag counts match Quikrete's calculator exactly, and our mortar estimate was changed to match theirs.

How I use AI tools

I use AI tools to help with research, first drafts and code. Nothing goes live until the numbers have been checked against the cited sources and covered by automated tests, and I've reviewed the page. Formulas, default values and sources are always verified against real references, never taken from an AI tool on trust.

Sources and prices

Material weights, bag yields and rules of thumb come from manufacturer data sheets, standards bodies and supplier charts. Prices are national averages from named cost guides, with the year shown. They're there for planning, not as a quote.

Updates

Each page shows a “Last updated” date. I change that date only when the content actually changes, like new prices each year or a corrected value.

Corrections

If you spot an error, email [email protected]. I'll check it, fix it if I got it wrong, and update the page date. Mistakes I've fixed are listed below.

Corrections log

  • 9 Oct 2026: Mortar estimate. We changed from about 13 to about 12 blocks per 80-lb bag to match Quikrete's own Mortar Mix calculator. A 142-block wall now shows 12 bags instead of 11.
  • 9 Oct 2026: Pea Gravel Calculator FAQ. Coverage per ton was understated. Corrected to about 115 sq ft at 2 inches and 77 sq ft at 3 inches.

Ads and affiliate links

YardageMath may show ads and use affiliate links in the future. They never change a calculator's result. See the Affiliate Disclosure for details.