About BuildCalc
BuildCalc makes free calculators for home improvement and construction projects: concrete slabs and footings, gravel driveways, and more.
Every calculator shows its formula and a worked example, so you can check the math yourself instead of trusting a black box. Results update instantly as you type.
All results are estimates. Material needs vary with ground conditions, waste and local practice, so always confirm final quantities with your supplier or a qualified professional.
New calculators are added regularly. If a calculator you need is missing, tell us through the contact page.