Topsoil Calculator
Calculate topsoil volume for a lawn, planting area or raised bed. Enter the area dimensions, planned soil depth, density and price to estimate how much to order.
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How the topsoil calculator works
Calculate topsoil volume for a lawn, planting area or raised bed. Enter the area dimensions, planned soil depth, density and price to estimate how much to order.
Topsoil volume = length × width × depth. Approximate weight = volume × bulk density. The calculator is designed to give a useful first-pass material estimate while keeping the assumptions visible. For a purchase, compare the result with the product packaging or supplier quotation.
Common search terms for this tool include topsoil calculator, top soil calculator, how much topsoil do I need, topsoil volume calculator. The wording is included naturally so the page answers the same questions people ask when planning a project.
Frequently asked questions
How deep should topsoil be?
Use your landscaping or lawn specification. Different plants and turf systems need different depths.
Should I calculate the whole lawn?
Yes. Measure the total area or split the lawn into rectangles and add the results.
Why is soil sold in tonnes and cubic yards?
Suppliers use both volume and weight, and the relationship depends on soil density and moisture.
Does soil settle?
Yes. Freshly placed soil can settle, so the appropriate allowance depends on the project.