Topsoil quantity formula
Multiply length by width, then multiply by depth after converting inches to feet. Divide cubic feet by 27 for cubic yards. Loose topsoil density varies with moisture and composition, so the tonnage is an approximate planning figure.
Common depths
Use 1–2 inches for light lawn topdressing, 4–6 inches for establishing a new lawn, and deeper layers for raised beds depending on their construction.
Related garden tools
Mulch · Lawn fertilizer · Grass seed & sod
Frequently asked questions
Should I add extra material?
Yes. Most projects need an allowance for cuts, breakage, uneven surfaces, overlap, or measurement error. The appropriate percentage depends on the material and layout.
Can I use this estimate to place an order?
Use it to plan and compare costs, then verify package coverage and project requirements with the manufacturer, supplier, or qualified contractor before a large purchase.