Know exactly how much to buy.
Concrete bags, gravel yards, block counts, material costs. Enter your dimensions, get an exact number — no signup, no spreadsheet.
Concrete
Slabs, footings, sonotubes and fence posts.
How this works
Every calculator on EstimateMix runs the same handful of formulas — volume of a rectangle, a cylinder, or a strip — against real manufacturer bag yields and material densities. Type in your project's dimensions and the numbers update instantly: cubic feet, cubic yards, bags, tons, or an estimated cost, depending on the tool.
Nothing is stored and nothing is uploaded — the math runs in your browser. Bookmark a calculator with your numbers already filled in by adding them to the page's URL, like ?length=20&width=10.