CalcQuarry

What it is

CalcQuarry provides 42 free calculators for construction and home projects, covering concrete and masonry, landscaping and paving, area and volume, and carpentry and roofing. Every calculator shows its formula, a worked example, and the sources behind its numbers.

The site is built and maintained by Muhammad Asad, who holds a BS in Information Technology. All formulas are shown on the page or in related guides, and results are estimates for planning purposes. Material constants come from sources such as QUIKRETE data sheets, university extension services, and industry associations.

Calculations run in your browser and numbers are not sent anywhere. The site emphasizes transparency, requiring sources for all numbers and providing corrections when errors are found. The goal is to help users work out how much material they need before purchasing.

Questions from the bench

Why are formulas shown on every calculator?

Formulas are shown on the page or in the related guide so you can check the result yourself. The site is not run by a licensed contractor or engineer, so showing the formula allows users to verify the calculation independently.

Are the calculators estimates or exact figures?

Results are estimates for planning purposes. Real jobs have uneven ground, waste and local conditions, so the site recommends adding an allowance (usually around 5 to 10%) and confirming quantities with your supplier.

Where do the material weights and coverage figures come from?

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.

What should I do if I find an error?

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.