Topsoil Calculator
Calculate cubic yards of topsoil for lawns, grass seedbeds, raised garden beds, and yard leveling. Enter your area dimensions and depth in inches to get volume in cubic yards, coverage, estimated weight in tons, and a waste-adjusted order quantity.
Estimated Required
Base Estimate
With 10% Waste
How to Use This Calculator
Enter the length and width of your project area in feet and the depth in inches. Select a waste factor — topsoil typically settles 15–20% after spreading and watering, so adding 10–15% is standard. Read the base estimate for reference; order the with-waste quantity.
Topsoil for Lawns and Grass
Topsoil depth requirements differ significantly depending on whether you are refreshing an existing lawn or establishing new grass from scratch.
For a full depth and coverage guide, see How Much Topsoil Do I Need?
Topsoil Cubic Yards, Density, and Weight
Understanding the relationship between volume and weight helps you compare supplier quotes and plan truck loads.
1 cubic yard = 27 cubic feet (3 ft × 3 ft × 3 ft). This is the standard unit for bulk topsoil sold by landscape suppliers.
Typical weight range: Dry screened topsoil weighs approximately 1.1–1.4 tons per cubic yard (2,200–2,800 lbs). The calculator uses 1.35 t/yd³ as a mid-range estimate.
Moisture matters: A yard of topsoil that is saturated after rain can weigh 1.5–1.7 tons — 15–25% heavier than dry. If your project has driveway or load limits, ask the supplier to deliver in smaller loads or request dry material.
Always confirm with your supplier. Density varies with organic content, sand/clay ratio, and how the soil was screened. Use the tons estimate here as a planning figure, not an invoice quantity.
Need to convert between tons, cubic yards, and other units? Use the Weight Converter.
Formula & Methodology
This calculator estimates topsoil quantity by converting your project dimensions into cubic volume, then applying the standard bulk density to yield an equivalent weight in tons.
Volume (yd³) = (Length ft × Width ft × Depth in ÷ 12) ÷ 27
Weight (tons) = Volume (yd³) × 1.35
With waste = Weight (tons) × (1 + Waste %)
Dry topsoil bulk density ≈ 1.35 tons/yd³. Wet topsoil may be 15–25% heavier. See Sources & Assumptions below.
Sources & Assumptions
Formula: Standard volumetric calculation — length × width × depth converted to cubic yards (÷ 27 cu ft/yd³).
Density values: Dry topsoil ≈ 1.35 t/yd³ (≈ 2,700 lbs/yd³). This is a typical dry bulk density used by landscape material suppliers and construction estimators. Actual density varies significantly by organic content, mineral composition, and moisture — wet topsoil may weigh 1.5–1.7 t/yd³.
Waste recommendation: 10–15% for settling. Topsoil settles 15–20% after spreading and watering — ordering extra avoids a second delivery.
Confirmation: Confirm weight and source material (screened vs. unscreened) with your supplier at the time of delivery.
Last reviewed: May 2026
Recommended Depths & Coverage
Use these common depth ranges for planning. Actual depth may vary based on base conditions, compaction, drainage, and supplier recommendations.
| Project Type | Recommended Depth | Approx. Coverage per 1 yd³ | Notes |
|---|---|---|---|
| Lawn topdressing | 0.25–0.5 in | ~648–1,296 sq ft | Light leveling and soil improvement |
| New lawn seedbed | 3–4 in | ~81–108 sq ft | Typical depth for new grass areas |
| Raised bed fill | 8–12 in | ~27–40 sq ft | Depends on bed depth |
| Garden bed amendment | 2–3 in | ~108–162 sq ft | Mix into existing soil |
Coverage values assume 1 cubic yard of material before waste. Add the selected waste factor for ordering quantities.
Project Examples
Common lawn, garden, and grading applications with cubic yard estimates and waste-adjusted order quantities.
| Project | Dimensions | Depth | Base yd³ |
|---|---|---|---|
| Lawn topdressing | 1,000 sq ft | ½ in | ~1.54 yd³ |
| New grass seedbed | 20 × 15 ft | 4 in | ~1.48 yd³ |
| Raised garden bed | 8 × 4 ft | 10 in | ~0.99 yd³ |
| Yard leveling project | 40 × 20 ft | 2 in | ~1.98 yd³ |
Tons calculated at 1.35 t/yd³. Confirm actual weight and delivery unit (tons vs. yd³) with your supplier.
Common Ordering Mistakes
- !Not accounting for settling: Topsoil typically settles 15–20% after the first rain or watering. Order 10–15% extra and mound the surface slightly to allow for natural compaction.
- !Ordering unscreened topsoil for a lawn: Unscreened topsoil contains rocks, roots, and clumps that surface after mowing. Ask for screened topsoil for any visible lawn or garden application.
- !Treating cubic yards and tons as the same: Topsoil weighs roughly 1.35 tons per cubic yard. A delivery quoted in tons that you assumed to be cubic yards will leave you significantly short.
- !Not loosening the existing soil first: Adding topsoil on top of compacted existing soil creates a sharp interface that hinders root growth and water infiltration. Aerate or till before adding new topsoil.
- !Under-filling raised beds in the first year: Raised beds settle considerably in year one. Fill slightly above the frame edge at planting time and plan to top up again the following spring.
Frequently Asked Questions
Related Calculators & Guides
Adding mulch over your new beds? Use the Mulch Calculator. Need a gravel base or drainage layer? Try the Gravel Calculator. Adding sand for leveling? See the Sand Calculator.
Depth guide for lawns, sod, raised beds, and grading: How Much Topsoil Do I Need?
Disclaimer
Results are estimates only. Topsoil density and moisture content vary significantly by source. Always confirm weight with your supplier before delivery.