Measure the length, width, and height in feet
Multiply length × width × height to get cubic feet
Divide cubic feet by 27 to get cubic yards
Use the formula: cubic yards = (L × W × H) ÷ 27
For flat areas, multiply length × width × depth, then divide by 27
For irregular shapes, break the area into smaller sections, calculate each section, then add them together
Convert inches to feet before calculating if measurements are in inches
Round the final result as needed for ordering materials