Measure the length, width, and height in feet
Multiply length × width × height to get cubic feet
Divide the cubic feet by 27
Use the formula: cubic yards = (length × width × height) ÷ 27
For irregular shapes, break the space into smaller rectangular sections
Compute each section separately in cubic feet
Add the cubic feet from all sections
Divide the total cubic feet by 27
Convert inches to feet before calculating if needed
Round the final result to the desired precision