CalcQuarry is a free collection of 112 calculators and plain-English guides for construction and home projects: concrete and masonry, landscaping and paving, area and volume, and carpentry and roofing. The goal is simple: help you work out how much material you need before you buy it.
Who runs it
CalcQuarry is built and maintained by Muhammad Asad. I hold a BS in Information Technology and have worked in network operations. I build websites with WordPress, and I started CalcQuarry because most material calculators either hide the formula or give a number with no explanation.
I’m not a licensed contractor or engineer. That’s why every guide shows the formula and a worked example so you can check the result yourself, and cites the manufacturer, university or industry source behind the figures it uses.
How the calculators work
- Formulas are shown on the page or in the related guide.
- Results are estimates for planning. Real jobs have uneven ground, waste and local conditions, so we recommend adding an allowance (usually around 5 to 10%) and confirming quantities with your supplier.
- Weights and coverage figures come from sources such as QUIKRETE data sheets, university extension services, the Concrete Masonry & Hardscapes Association and the Interlocking Concrete Pavement Institute. Sources are listed at the bottom of each guide.
How the calculators are built
- Each formula is a small, separate function covered by automated tests with hand-checked answers.
- Material constants such as bag yields and weights per cubic yard come from the manufacturer or a named source, never from guesswork.
- Code limits, such as maximum stair riser height, are summarized from official handouts, with a reminder to check local amendments.
- Each page shows when it was last reviewed.
The full process is on the How we build and test page.
Editorial standards
- Sources first. Numbers must come from a named source or from a formula we show.
- No guessing. If a figure varies by supplier or region, we say so and tell you to ask.
- Corrections. If you find an error, email info@calcquarry.com with the page and what is wrong. Confirmed errors are fixed and the page is updated.
- Not professional advice. Calculators and guides don’t replace advice from a licensed contractor, engineer or your local building department. Structural work, retaining walls, driveways and stairs should be checked against local code.
Independence and advertising
CalcQuarry is independent and isn’t affiliated with any manufacturer or retailer named on the site. Brand names appear only where we cite their published data. The site is free to use; it may be supported by advertising, and advertisers have no say in the calculators or their results.
Contact
Found a mistake, or want a calculator we don’t have yet? Email info@calcquarry.com or use the contact page.