SlabCalc: Concrete Calculator

Planning a slab, footing, wall, round pad, pier, or post hole? SlabCalc turns your measurements into a practical concrete estimate: cubic yards, premix bags, approximate weight, and optional material cost. MADE FOR REAL YARD PROJECTS - Slabs, footings, walls, round pads, piers, and post holes - Enter the dimensions for the pour shape - See ready-mix yards and 50, 60, or 80 lb bag counts - Waste buffer (0–15%) so you don't come up short - Approximate concrete weight and project footprint - Save projects and share the estimate SIMPLE ON PURPOSE - No account, no sign-up - Works offline — everything stays on your phone - Opens fast, one clear answer PRIVATE BY DESIGN Your measurements and saved projects never leave your device. SlabCalc is free and supported by ads. Useful for patios, sidewalks, pads, floors, walls, footings, piers, and post holes.