Calculate concrete coverage area per cubic yard at various slab thicknesses for planning pours and ordering.
Enter cubic yards and slab thickness to see coverage area.
Divide 27 cubic feet by slab thickness in feet to find square feet per cubic yard. At 4 inches thick, one cubic yard covers about 81 square feet.
Thinner slabs cover more area per cubic yard. A 4-inch slab covers 81 sq ft per yard, while a 6-inch slab covers only 54 sq ft — 33% less coverage.
Measure the area to be poured. Divide by the coverage per yard for your slab thickness. Round up to the nearest quarter yard. Add 10% for waste.
For areas needing more than 1 cubic yard, ready-mix delivery is more practical. Under 1 cubic yard, bagged concrete (about 45 bags of 80 lb mix) may be sufficient.
At 4 inches thick, about 81 square feet. At 6 inches thick, about 54 square feet.
Yes. Thicker slabs use more concrete per square foot, reducing the total coverage area per cubic yard.
Expertise covers cubic yard formulas, material quantity planning, unit conversions, and practical ordering checks.