How many cubic yards do I need?
Multiply area in square feet by depth in feet, then divide by 27. A 10 × 10 ft area at 6 inches deep is 50 cubic feet, which is 1.85 cubic yards. Depth in inches divided by 12 gives the depth in feet.
Any area and depth — in cubic yards, feet, metres and tons.
27. A cubic yard is a cube three feet on each side, so 3 × 3 × 3 = 27 cubic feet.
Multiply the square footage by the depth in feet, then divide by 27. For a depth in inches, divide the inches by 12 first.
One cubic metre is 1.308 cubic yards, and one cubic yard is 0.7646 cubic metres.
It depends on the material: about 2,970 lb for ¼–2 in gravel, 2,200 lb for dry topsoil, 4,050 lb for concrete and around 600 lb for bark mulch.
Multiply area in square feet by depth in feet, then divide by 27. A 10 × 10 ft area at 6 inches deep is 50 cubic feet, which is 1.85 cubic yards. Depth in inches divided by 12 gives the depth in feet.
Suppliers quote aggregate and soil by the ton, so convert with the material weight: ¼–2 in gravel is about 1.5 tons per cubic yard, dry topsoil about 1.1 tons, concrete just over 2 tons and bark mulch about 0.3 tons. A standard dump truck carries 10–14 cubic yards.