Concrete Calculators
Concrete slab calculators for every common US size: cubic yards, 80/60 lb bags, rebar grid, 2x4 forms and cost at 4", 5" and 6" thick.
Concrete Slab Calculator
Open calculator →Enter length, width and thickness to get cubic yards, 80 lb bag / 60 lb bag / 40 lb bag counts, weight and cost — or jump straight to a size from the chart below (13 common US sizes, pre-calculated at 4").