Topsoil Calculator

Enter your area dimensions and fill depth. Get cubic yards and bag count for lawns, raised beds, and fill projects.

Topsoil Calculator
✓ Your estimate
Estimated topsoil needed
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Cubic Yards
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Cubic Yards
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Cubic Feet
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1.5 cu ft Bags
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What this estimate includes

This estimate shows topsoil needed in cubic yards, cubic feet, and bags based on your area, depth, and bag size.

How it’s calculated

Area = length × width
Volume = area × depth
Cubic yards = cubic feet ÷ 27
Bags = cubic feet ÷ bag size

Before you order

Topsoil settles after watering and compacts over time. Use this as a planning estimate and confirm quantities with your landscape supplier before ordering.

Frequently Asked Questions

How much topsoil do I need for a lawn?
For a new lawn, you need 4-6 inches of topsoil. At 4 inches deep, 1 cubic yard covers about 81 sq ft. At 6 inches deep, 1 cubic yard covers about 54 sq ft. Always add 15% for settling and confirm quantities with your supplier.
How deep should topsoil be for grass?
Grass roots need at least 4 inches of good topsoil. 6 inches is better for a healthy lawn that handles drought and heavy traffic. For overseeding bare patches in an existing lawn, 2 inches of topsoil is typically sufficient.
How much does topsoil settle?
Topsoil typically settles 10-15% after the first few waterings and over the first growing season. Always order 10-15% more than your calculated amount to account for this -- running short after installation means a second delivery.
How many bags of topsoil are in a cubic yard?
One cubic yard equals 27 cubic feet. A 1.5 cu ft bag requires 18 bags per cubic yard. A 2 cu ft bag requires about 14 bags per yard. For anything over 2 cubic yards, bulk delivery is almost always cheaper than bags.
Is topsoil sold by weight or volume?
Topsoil is sold by volume -- cubic yards for bulk delivery, cubic feet for bags. However, some suppliers quote delivery pricing by the ton. A cubic yard of topsoil weighs approximately 1,080 to 1,800 lbs depending on moisture content.
What is the difference between topsoil and garden soil?
Topsoil is the natural upper soil layer used for grading, leveling, and establishing lawns. Garden soil (or potting blends) is enriched with compost and amendments for growing plants. For raised beds and vegetable gardens, a 60/40 mix of topsoil and compost gives better results than either alone.
How deep should topsoil be for a vegetable garden?
Vegetables need at least 6 inches of good topsoil -- 8-12 inches is better for root vegetables like carrots and beets. Raised beds are ideal because you control the depth and soil quality. Fill with a 60/40 blend of topsoil and compost for best results.
Disclaimer: This calculator provides estimates only. Actual quantities depend on soil type, settling rate, and site conditions. Verify all quantities with your landscape supplier before ordering. See all outdoor material calculators.