How to estimate topsoil for a lawn or garden

Plan the area and depth you want, then convert to cubic yards and round up.

Topsoil is ordered by volume, but your plan is usually area and target depth. The estimate is straightforward once you decide how deep you want to spread soil.

For grading and leveling, you may need more than you think—low spots and settling add up.

Step-by-step: topsoil math

Measure the area to cover (lawn section, garden bed, or fill area).
Choose a target depth (thin topdressing vs deeper leveling).
Convert area × depth to volume (cubic feet/meters).
Convert volume to cubic yards for ordering.
Add a buffer for uneven grade and settling, then round up.

Practical tips

Estimate thin topdressing separately from deeper fill or grading.
Soil settles; a small buffer prevents shortages.
Confirm whether you need screened topsoil for a smoother finish.
If you’re fixing drainage or slope, consider getting a grading plan before ordering.

Want the cubic yard estimate fast?

Use our topsoil calculator and share a link that keeps your inputs.

Use the calculator

FAQ

How much topsoil do I need for a lawn?

Measure the lawn area and choose a target depth, then convert to cubic yards and round up.

How deep should topsoil be?

It depends on the project. Topdressing is often thin; building up grade or creating planting depth usually needs more. Pick a depth that matches your goal.

Should I buy extra topsoil?

A small buffer helps cover low spots and settling, and it reduces the chance of running short mid-project.

In Landscaping

Related calculators

Mulch calculator

Estimate cubic yards for mulch.

Gravel calculator

Estimate cubic yards of gravel.

Gravel tons converter

Convert cubic yards to tons (and back).

Mulch bags calculator

Estimate how many bags you need.