Cubic Yard Calculator

A cubic yard is a standard unit of volume measuring three feet long by three feet wide by three feet deep, totaling 27 cubic feet. To find the volume in cubic yards, you first calculate the total volume in cubic feet or cubic inches depending on your initial measurements, and then convert that figure. For a standard rectangular space, the basic formula is Volume in Cubic Yards = (Length in feet × Width in feet × Depth in feet) ÷ 27. For specialized shapes like cylinders, cones, or hollow borders, the calculator applies dedicated geometric formulas before converting the final product into cubic yards and estimating total material costs based on your unit price.

Imagine you are planning to pour a rectangular concrete patio that measures 18 feet long, 12 feet wide, and 0.5 feet (6 inches) deep. First, calculate the total volume in cubic feet by multiplying length, width, and depth: 18 × 12 × 0.5 = 108 cubic feet. Next, convert that result into cubic yards by dividing by the conversion factor of 27: 108 ÷ 27 = 4 cubic yards. If your local supplier charges $140 per cubic yard for ready-mix concrete, your total material cost will be 4 × $140 = $560.

Always add a 5% to 10% waste buffer to your final calculated cubic yardage to account for uneven subgrades, spillage, or settling. When measuring depth, take multiple readings across the site to ensure an accurate average, as low spots can drastically increase your concrete or soil requirements. Lastly, verify whether your supplier sells materials in exact fractional cubic yards or if you need to round up to the nearest whole unit.