This concrete calculator allows you to estimate how much concrete you need for a specific area and how many bags of concrete are required for this space, accounting for concrete density, weight, and spillage. Concrete is often sold in bags.
A cubic yard of concrete's average weight is 4,050 lbs, or 150 lbs per cubic foot. Quikrete concrete bags come in 40lb, 50lb, 60lb, & 80 lb.
An 80-pound bag of concrete yields 0.60 cubic feet, or 0.0222 cubic yards, covering roughly 3.6 square feet up to a typical depth of 2 inches for excavation or backfills, and 1.66 bags of 80-pound concrete will yield 1 cubic foot of landfill.
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how much do cement bags weigh