Topsoil Calculator

Landscaping

Topsoil Calculator

Calculate cubic yards, bags and approximate weight of topsoil for lawns and garden beds.

Topsoil Project

Recommended Topsoil
2.59 yd³
Includes 5% allowance
Cubic Feet70 ft³
Approx. Tons2.59 tons
1.5 ft³ Bags47
Estimated Cost—
Topsoil weight varies significantly with moisture and composition. Bulk tonnage is only an approximate planning figure.

How Much Topsoil Do I Need?

Enter the length, width and desired soil depth to calculate the amount of topsoil required in cubic feet and cubic yards.

Topsoil Calculation Formula

Volume = Length × Width × Depth

When the depth is entered in inches, it is converted to feet before calculating the volume.

Soil settles: Loose topsoil can compact and settle after spreading, watering and traffic.

Example

An area measuring 20 ft by 10 ft covered with 4 inches of topsoil requires about 66.7 cubic feet before allowance.

With a 5% allowance, the total becomes approximately 70 cubic feet, or about 2.59 cubic yards.

Bulk Topsoil vs Bags

Bagged soil is convenient for containers and small garden projects. Bulk delivery is usually easier for lawns and large beds.

Topsoil Weight

Topsoil weight varies considerably depending on moisture, sand, clay and organic content. A tonnage conversion should only be used as a rough estimate unless the supplier provides a product-specific density.

Frequently Asked Questions

How deep should topsoil be?

The required depth depends on whether you are top-dressing a lawn, establishing new turf or filling a garden bed.

How many cubic feet are in one cubic yard?

One cubic yard contains 27 cubic feet.

Why might delivered soil volume look different?

Soil can settle and compact during delivery and installation, and moisture can change its apparent volume and weight.

Planning estimate: Soil density, moisture, compaction and settlement vary. Confirm bulk quantities with your supplier.

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