Topsoil Calculator

Estimate topsoil volume for lawns and garden beds.

Mason ReidFounder and Lead Estimator at MeasureThen

Last updated 2026-08-21

What Is a Topsoil Calculator?

The topsoil calculator estimates how much topsoil you need to build up a lawn, garden bed, or planting area. You enter the area and the depth of topsoil you want, and it returns the volume in cubic yards plus the approximate weight for planning delivery.

How It Works

Volume = Area × (Depth ÷ 12). Cubic yards = Volume ÷ 27.

Example

For 500 sq ft at 4 in deep: 500 × 0.333 = 166.7 cu ft ≈ 6.17 cu yd.

How to Calculate

Measure the area you want to cover in square feet. A 50 ft by 10 ft bed is 500 sq ft.
Decide on depth. Plan on 4 to 6 in of good topsoil before laying sod or seed.
Enter the area and depth. At 500 sq ft and 4 in deep, the volume is 166.7 cu ft, about 6.17 cubic yards.
Review the weight estimate to check whether you need a delivery truck or can haul it yourself.
Add about 10% for settling and grading, then spread and level the topsoil before planting.

Topsoil Volume and Weight by Depth

Depth	Volume per 100 sq ft	Cubic Yards	Approx. Weight (tons)
2 in	16.7 cu ft	0.62 cu yd	0.6 tons
3 in	25 cu ft	0.93 cu yd	0.9 tons
4 in	33.3 cu ft	1.23 cu yd	1.2 tons
5 in	41.7 cu ft	1.54 cu yd	1.5 tons
6 in	50 cu ft	1.85 cu yd	1.9 tons

Sources

Frequently Asked Questions

How much topsoil do I need for a lawn?

4–6 in of good topsoil is recommended before sod or seed.

Is topsoil sold by the yard?

Bulk suppliers sell by the cubic yard; garden centers also offer bagged topsoil.

Should I test the soil?

A soil test is wise before adding amendments, but volume-wise this tool covers the amount you need.

Mason ReidFounder and Lead Estimator at MeasureThen

Mason Reid founded MeasureThen after two decades of hands-on work in construction and estimating. Across residential and light commercial projects, he sized concrete pours, framed walls, hung drywall, and priced out roofing, fencing, and deck work — learning the exact math that every job depends on. At MeasureThen he writes the formulas, checks every calculator against real-world assumptions, and makes sure each one is simple enough for a homeowner to trust and a contractor to use. When he is not measuring twice, he is helping projects stay on budget.

Every MeasureThen calculator uses simple, transparent formulas and standard industry assumptions drawn from common construction practice. We show the math behind each result and include worked examples so you can follow along and double-check the numbers. Results are estimates: materials, labor, and pricing vary by region and market, so always confirm important figures with a licensed professional and your local building codes.