Plan your build with free construction estimators — concrete volumes, lumber counts, paint coverage and more, all in one place.
Estimate cubic yards and premix bags for slabs, footings and columns.
Cubic yards and tons of gravel.
Yards, feet and bags of mulch.
Roof squares and shingle bundles.
Tiles and boxes for any room.
Estimate project costs, materials and quantities for your construction job.
More construction estimators are on the way:
Explore our other calculator collections: Math Calculators, Unit Conversion Calculators
Yes — every construction calculator on Sigma Calculator is 100% free, with no sign-up and no limits.
Concrete, gravel, mulch, roofing, tile, and more — covering materials estimation for common building and landscaping projects.
Enter the length, width, and thickness of your slab in the concrete calculator — it returns cubic yards instantly, including a 10% waste allowance option.
They are solid planning estimates using standard industry formulas. Always confirm final quantities with your supplier or contractor before ordering.
Yes — every calculator is 100% mobile friendly and works instantly on any phone, tablet, or desktop.