Topsoil calculator for Rhode Island
Figure lawn, bed, and finish-grade quantities by starting with the depth needed.
Enter your project dimensions
Start with depth, since it affects the amount of topsoil more than the area alone. A 1,000-square-foot lawn calls for 12 cubic yards at 4-inch depth, while a half-inch topdressing takes barely 1.5 yards. First identify the purpose of the soil. The calculator uses your area and selected depth to show cubic yards, the unit used to sell topsoil, plus tons based on about 2,200 lb per dry yard. Screening removes rocks, roots, and clods, which means less material to rake out after spreading.
Start with depth, then calculate
- For a lawn topdress, spread 1/4 to 1/2 inch, then rake it in lightly while leaving the grass tips exposed.
- For overseeding: use 1/2 to 1 inch.
- For a seeded or sodded lawn, place 4-6 inches over subgrade that has been loosened.
- Flower beds: use 6 inches and blend it into the native soil underneath.
- Vegetable beds need 12 inches; for beds, a garden-soil blend is the better material (see the Soil Calculator).
- In feet, measure your area, then select a depth from the options above.
- Divide cubic feet by 27 to get cubic yards, then multiply yards by 1.1 for tons. The calculator handles both steps and includes 5% when the allowance is left on.
Tons = cubic yards × 1.1
Coverage by depth
| Depth | 1 cubic yard covers | 5 yards cover |
|---|---|---|
| 1/2 inch topdress | 648 sq ft | 3,240 sq ft |
| 2 inches | 162 sq ft | 810 sq ft |
| 4 inches | 81 sq ft | 405 sq ft |
| 6 inches | 54 sq ft | 270 sq ft |
| Project | Typical size | Depth | Volume | Weight |
|---|---|---|---|---|
| New lawn, seed or sod | 1,000 sq ft | 4" | 12.3 yd³ | 13.6 tons |
| Lawn topdressing | 2,000 sq ft | 0.5" | 3.1 yd³ | 3.4 tons |
| New flower bed | 15 x 4 ft | 6" | 1.1 yd³ | 1.2 tons |
| Patch repairs around the yard | ≈ 150 sq ft | 2" | 0.9 yd³ | 1 tons |
| Finish grade over fill | 600 sq ft | 4" | 7.4 yd³ | 8.1 tons |
Example calculation: 1,000 square feet of new lawn
For 4 inches, calculate 1,000 x 0.333 = 333 cubic feet = 12.3 cubic yards, or roughly 13.5 tons loaded. For sod work, order 12.5 to 13 yards, using the extra material at edges and in low corners. When the subgrade needs more height, build that layer with fill dirt before reserving topsoil for the upper 4 inches used by roots.
Screened topsoil: what it is and how to assess a load
Natural topsoil is the surface layer, where organic matter is present. During screening, mesh removes stones, roots, and clods. Screened topsoil should be dark, break apart easily in your hand, and smell earthy instead of swampy. Press a moist handful into a loose ball, then poke it: it should come apart. A smooth ribbon points to heavy clay, while soil that cannot form a ball is largely sand. Gray material or a sour odor can indicate wet, airless storage, and visible rhizomes can bring in weeds. Photograph material that seems unusual before spreading it so the issue can be addressed.
Spread it carefully
- Open up the subgrade by an inch before adding topsoil. Above sealed clay, Four inches of topsoil holds water like a basin with its drain shut.
- Set the grade to drain away from the house, with a 6-inch drop over the first 10 feet.
- Settle the soil gently rather than stomping it down. In properly settled topsoil, a footprint should press about half an inch deep.
- Arrange delivery during the week the material will be spread. Rain can make a pile weigh a third more per shovel, causing it to smear rather than rake.
Understanding a topsoil order
How much topsoil is needed for a new lawn?
What does a yard of topsoil weigh?
What is the price of a yard of topsoil?
How much area will a yard of topsoil cover?
What does topsoil mean?
Can topsoil be spread over existing grass?
For beds, topsoil or garden soil?
Should I till before putting down topsoil?
Other calculators
Finished the lawn calculation? We can deliver the soil.
Order screened topsoil by the cubic yard with free delivery across Rhode Island.
