To convert square feet plus depth to cubic yards, first convert depth to feet, multiply area by depth to get cubic feet, then divide by 27. For depth in inches: cubic yards = square feet × inches ÷ 324.
Multiply square feet by depth in feet to get cubic feet, then divide by 27. If depth is in inches, cubic yards = square feet × inches ÷ 324.
Published: September 23, 2026
Last reviewed: September 23, 2026
Published by BuildYard. The guide reflects BuildYard's calculation methodology and editorial standards and does not replace project-specific professional advice.
Use only the area receiving the material at the stated depth.
Separate zones with different depths instead of averaging large differences.
Divide inches by 12 to convert depth to feet.
Multiplying square feet by feet produces cubic feet.
Divide cubic feet by 27.
Combining the two steps gives square feet × inches ÷ 324.
Compaction, settlement, waste, and coverage are not part of the geometric conversion itself.
Apply them only when appropriate for the selected material and project.
Bulk suppliers may sell by cubic yard, ton, bag, or truckload.
Convert and round using current supplier information.
Convert feet, inches, and yards consistently in construction takeoffs and avoid mixing linear, square, and cubic unit relationships.
Read guide →Construction ConversionsConvert square feet to square yards for carpet, flooring, paving, and surface-area estimates using the exact 9-to-1 area relationship.
Read guide →Construction ConversionsConvert cubic yards to short tons with material-specific bulk density instead of using a universal yards-to-tons factor.
Read guide →Geometric conversion only; material-specific compaction or waste comes afterward.
| Step | Result |
|---|---|
| Area | 1,000 sq ft |
| Depth | 4 in = 0.3333 ft |
| Volume | 333.33 cu ft |
| Cubic yards | 12.35 cu yd |
Current manufacturer data, supplier specifications, drawings, field measurements, applicable codes, permit requirements, and qualified professional guidance can take priority over a general-purpose planning estimate.