Cubic Yards Calculator

Multiply length x width x depth (all in feet), then divide by 27. For depths in inches, convert to feet first by dividing by 12. Example: A 20x30 ft patio, 4" deep = (20 x 30 x 0.33) / 27 = 7.33 cubic yards.

Coverage depends on depth: 1" depth = 324 sq ft, 2" depth = 162 sq ft, 3" depth = 108 sq ft, 4" depth = 81 sq ft, 6" depth = 54 sq ft. To find coverage: 324 / depth in inches = sq ft covered.

One cubic yard of concrete requires approximately 45 80-lb bags, 60 60-lb bags, or 90 40-lb bags. Each 80-lb bag yields about 0.6 cubic feet. For projects over 0.5 cubic yards, consider ordering ready-mix concrete.

Weight varies by material: Concrete = ~4,050 lbs (2 tons), Gravel = ~2,700 lbs (1.35 tons), Sand = ~2,700 lbs, Topsoil = ~2,000 lbs (1 ton), Mulch = ~400-800 lbs. Always check with your supplier.

Divide cubic feet by 27 to get cubic yards. There are 27 cubic feet in 1 cubic yard (3 ft x 3 ft x 3 ft = 27 cu ft). Example: 54 cubic feet / 27 = 2 cubic yards.

Yes, order 5-15% extra to account for waste, spillage, uneven ground, and compaction. For gravel and crushed stone, add 10% for compaction. For irregular shapes or sloped areas, add 15%. It's better to have a little extra than to run short.