Worked example: 4 inches deep
| Step | Math | Result |
|---|---|---|
| Area | about 110 ft × 99 ft | 10,890 sq ft |
| Volume at 4 in | 10,890 × 4 ÷ 12 | 3,630.0 ft³ |
| Add 10% for settling | 3,630.0 × 1.10 | 3,993.0 ft³ |
| Cubic yards | 3,993.0 ÷ 27 | 147.89 yd³ |
| Tons | 147.89 × 1.1 | 162.68 tons |
| 0.75 ft³ bags (40 lb) | 3,993.0 ÷ 0.75 | 5324 bags |
| 1.5 ft³ bags | 3,993.0 ÷ 1.5 | 2662 bags |
Topsoil by depth
| Depth | Cubic feet | Cubic yards (+10%) | Tons | Bulk order (yd³) | Delivered | 0.75 ft³ bags |
|---|---|---|---|---|---|---|
| 1 in | 907.5 | 36.97 | 40.67 | 37.0 | $1,370 | 1331 |
| 2 in | 1,815.0 | 73.94 | 81.34 | 74.0 | $2,665 | 2662 |
| 4 in | 3,630.0 | 147.89 | 162.68 | 148.0 | $5,255 | 5324 |
| 6 in | 5,445.0 | 221.83 | 244.02 | 222.0 | $7,845 | 7986 |
Bulk delivery is cheaper at 4 inches: $17,303 in 0.75 ft³ bags versus $5,255 delivered. A cubic yard of topsoil weighs about 1.1 tons dry and more when wet, so check your truck or trailer limit.
Prices used: 0.75 ft³ bag $3.25, 1.5 ft³ bag $6.50; bulk topsoil $35/yd³ plus $75 delivery (1 yd³ minimum).
Spread by depth: 1/2 inch at a time for top-dressing living grass, 2 inches to level, 4–6 inches to build a new lawn. The lawn is approximated as a rectangle; use a different shape in the calculator if yours is not.
Nearby sizes
Also see 10,000 sq ft lawn , 5,000 sq ft lawn, or the topsoil size chart. Open the topsoil calculator to change the size.