Topsoil Calculator
Determine the right amount of topsoil for your garden, lawn, or landscaping project. Enter your area and desired depth to get cubic yards, weight in tons, and bags needed.
Topsoil Grades and Quality
Topsoil quality varies significantly. Screened topsoil has been sifted through a 1/2-inch screen to remove rocks, roots, and debris. Unscreened topsoil is cheaper but may contain clumps and stones. Premium blended topsoil mixes screened soil with compost for ready-to-plant beds. For lawns, screened topsoil works well. For gardens and raised beds, a 70/30 blend of screened topsoil and compost gives the best growing results. Always ask your supplier about the source and whether the soil has been tested for contaminants.
How to Apply Topsoil
For new lawns, spread topsoil to a uniform depth over the prepared subgrade, then grade it smooth with a landscape rake. For garden beds, mix the new topsoil into the existing soil to avoid creating a layer boundary that impedes root growth and drainage. When filling raised beds, use a blend of topsoil (60 percent), compost (30 percent), and perlite or vermiculite (10 percent) for optimal drainage and fertility. Avoid working topsoil when it is wet, as compaction destroys the soil structure that roots need to thrive.
Frequently Asked Questions
How deep should topsoil be for a new lawn?
Apply 4 to 6 inches of topsoil for a new lawn. For overseeding or topdressing an existing lawn, 1 to 2 inches is sufficient.
What is the difference between topsoil and garden soil?
Topsoil is the natural top layer of earth, screened for rocks and debris. Garden soil is topsoil blended with compost and amendments for planting. Garden soil costs more but is better for beds.
How much does a cubic yard of topsoil weigh?
A cubic yard of topsoil weighs approximately 2,000 to 2,400 pounds (1.0 to 1.2 tons) depending on moisture content.