Category Concrete

Calculate how many cubic yards of concrete you need for a garage floor slab, plus bag equivalents, weight, and total cost based on your length, width, and thickness.

Enter your slab dimensions and a cement:sand:gravel ratio to get bags of cement, sand, gravel, and water needed — with a printable estimate sheet.

Calculate cubic yards, 60/80 lb bags, weight, and cost for any concrete pad, slab, or footing. Enter length, width, and thickness for an instant estimate.

Calculate the water needed for a target water-cement ratio. Enter your cement weight and ratio to get water in pounds, gallons, and liters, plus a strength guide.

Work out how much concrete resurfacer, patch compound or crack filler you need. Enter your area or crack size and thickness to get bags, primer, tubes and cost. Free and instant.

Work out where control and expansion joints belong in a concrete slab. Enter slab size and thickness to get joint spacing, panel layout, sealant needed and cost. Free and instant.

Work out exactly how much concrete you need for a poured retaining wall. Enter wall size, footing and length to get bags, cubic yards, rebar guidance and cost. Free and instant.

Work out mortar bags for laying block or brick — enter your wall size, unit type and joint thickness to get bags, volume and cost.

Work out how much grout you need to fill CMU block cores — solid or at any rebar spacing — using NCMA's published grout yield table.

Work out exactly how many bags of concrete you need per deck footing and in total. Enter footing size, depth and count to get bags, water, weight, cost and a frost-depth check. Free and instant.