Concrete & Masonry

Slab volume, bag counts, and cubic-yard estimates for patios, driveways, footings, and post holes.

Concrete Slab CalculatorEstimate cubic yards of concrete for a rectangular slab, patio, driveway, or footing. Enter length, width, and thickness with an optional waste allowance for spillage and over-excavation.
Concrete Bags CalculatorConvert a slab, post hole, or patch volume into the number of premix concrete bags needed. Supports 40, 60, and 80 lb bag yields.