GravelCalc exists to answer one question quickly and accurately: how much gravel do you need? Whether you are pricing a new driveway, planning a walkway, or ordering base rock for a patio, our calculators convert your measurements into cubic yards, tons, and bag counts using standard industry densities — the same figures suppliers use.
Every calculator on this site is free, works on any device, requires no sign-up, and produces results you can copy, print, or share. Our reference tables, including the gravel coverage chart, are free to cite in your own articles and project plans with a link back.
We recommend confirming final quantities with your supplier before ordering, since moisture content and stone gradation can shift real-world weights a few percent from any calculated estimate. Questions or suggestions? Get in touch.