Calculators for concrete and masonry projects, each inside a guide with the formula and a worked example. The concrete calculator gives cubic yards and 60 or 80 lb premix bags for a slab, patio, or walkway. The concrete block calculator counts blocks (1.125 per square foot for standard 8 x 16 in block) and bags of mortar, and the brick calculator counts bricks by size (about 6.75 modular bricks per square foot, from the Brick Industry Association). The paver calculator gives pavers plus the gravel base and bedding sand for a patio or walkway.
Enter the driveway size, compacted thickness, and mix weight to get tons and cubic yards of hot-mix asphalt, plus the gravel base: a 50 x 12 ft driveway at 3 in takes about 11 tons. Includes a chart by driveway size and thickness, driveway thickness guidance, and weight conversions.
Enter the slab size, bar spacing, edge clearance, bar size, and lap to get the bars each way, linear feet, the 10 or 20 ft bars to buy, and their weight: a 10 x 10 ft slab with #4 bars 12 in apart takes eleven 20 ft bars, about 147 lb. Includes rebar weights per foot, lap lengths, and a chart for common slab sizes.
Enter your wall’s length, height, openings, and brick size to count bricks and bags of mortar. Includes bricks per square foot for seven brick sizes from the Brick Industry Association and tips for ordering.
Enter your slab size and thickness to get cubic yards and the number of 60 lb or 80 lb bags. Includes bags per yard, thickness by project, and when ready-mix makes more sense.
Enter your wall length, height, and block size to get the number of concrete blocks and bags of mortar. Includes blocks per square foot, real mortar yields by product, and code notes for retaining walls.
Enter your patio size and paver dimensions to get the paver count, gravel base in cubic yards and tons, and bedding sand in cubic feet. Includes pavers per square foot by size and base depths for patios and driveways.