Coverage is geometric and excludes settlement, compaction, grade variation, and material loss. Use actual measurements for ordering.
Quick reference
Topsoil coverage by depth
| Depth | 1 yd³ | 2 yd³ | 3 yd³ |
|---|---|---|---|
| 1 in | 324 ft² | 648 ft² | 972 ft² |
| 2 in | 162 ft² | 324 ft² | 486 ft² |
| 3 in | 108 ft² | 216 ft² | 324 ft² |
| 4 in | 81 ft² | 162 ft² | 243 ft² |
| 5 in | 65 ft² | 130 ft² | 194 ft² |
| 6 in | 54 ft² | 108 ft² | 162 ft² |
Theoretical loose-volume coverage; settlement and compaction are not included.
01 / Formula
How this is calculated
Coverage sq ft = 324 ÷ depth in inches, per cubic yard02 / Assumptions
What the estimate assumes
- ✓One cubic yard equals 27 cubic feet.
- ✓Depth is uniform.
- ✓Values describe theoretical loose volume.
03 / Worked example
See the math in context
At 2.5 inches, one cubic yard covers 324 ÷ 2.5 = 129.6 sq ft before allowance.
04 / Guidance
Why delivered coverage differs
Moisture, settlement, compaction, screening, blend, spreading accuracy, and uneven grade can change the field result. Ask the supplier how volume is measured.
Questions
Frequently asked
How do I measure an irregular area?+
Split the bed or lawn into rectangles, circles, and triangles, calculate each area, then add them. Measure narrow curves in shorter sections for a better approximation.
Should I include extra material?+
Use a visible allowance for grade variation, settlement, compaction, spillage, cuts, or future repair as appropriate. The right percentage depends on the material and site.