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Topsoil Calculator

Whether you are preparing a new lawn, filling raised beds or levelling low spots, this calculator converts your area and depth into a topsoil order. It includes an allowance for settling and an estimated weight for transport.

Enter your measurements

Measurements
ft
ft
in

New lawns commonly need 4–6 in (10–15 cm); top-dressing needs much less.

Material & assumptions
tons/yd³

Dry, loose topsoil is often around 1.0–1.3 tons/yd³; wet soil is heavier. Check with your supplier.

%

Loose soil settles after spreading and watering. Add extra if you need a finished depth.

Enter your measurements and press Calculate to see quantities, a material breakdown and an optional cost estimate.

How the calculation works

  • Volume = Area × Depth × (1 + Settling %)
  • Weight = Volume × Density

Loose topsoil settles as it is spread, rolled and watered. Adding an allowance helps you reach your intended finished depth.

Assumptions used

  • Default density is 1.1 tons/yd³ (≈1.3 t/m³) for dry, loose topsoil. Wet soil can be much heavier.
  • Weight is for transport planning only; topsoil is usually sold by volume.

Example calculation

1,000 ft² of new lawn needing 4 in of topsoil, with 10% for settling.

  1. 1Volume: 1,000 × (4 ÷ 12) = 333 ft³ = 12.35 yd³
  2. 2With 10% settling: 13.6 yd³
  3. 3At 1.1 tons/yd³: about 15 tons

Result: Order roughly 13.5–14 cubic yards of topsoil.

How to measure your project

  • Use the total area to be covered. For raised beds, use the inside length and width and the fill depth.
  • When levelling, measure the depth at several points and use the average.

Frequently asked questions

How much topsoil do I need for a new lawn?

Many lawn guides recommend 4–6 in (10–15 cm) of good topsoil for a new lawn. That is about 12–19 cubic yards per 1,000 ft².

How much does a cubic yard of topsoil weigh?

Often roughly 1–1.3 tons when dry, and more when wet. Check with your supplier before loading a trailer, as overloading is a common mistake.

Related guides

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Results are estimates based on the measurements and assumptions you enter. Always confirm product specifications, local building codes and final quantities with your supplier or a qualified professional. See our disclaimer.