CalculatorAI
Topsoil Calculator
landscapeLandscape Area
local_shippingMaterial Needed
Volume Needed
-- yd³
calculate
Enter dimensions
How to Use the Topsoil Calculator
Planning a garden, laying sod, or filling raised beds requires knowing exactly how much material to order. Our topsoil calculator makes it easy to estimate the volume and weight of soil needed for your project.
- Select Your Unit System: Choose between Imperial (feet/inches) or Metric (meters/cm).
- Choose the Shape: Select "Rectangle" for square or rectangular areas, or "Circle" for round garden beds.
- Enter Dimensions: Input the length and width (or diameter) and the desired depth of the topsoil.
- Calculate: Click the button to see your results in cubic yards, cubic feet, tons, and estimated bag counts.
Why Calculate Topsoil Correctly?
Ordering too little topsoil delays your project, while ordering too much wastes money and leaves you with a pile of dirt to dispose of. Most suppliers sell topsoil by the cubic yard or by the ton.
Knowing the precise amount ensures you get the right coverage for:
- New Lawns: Requires 4-6 inches of topsoil.
- Garden Beds: Vegetable gardens often need 6-12 inches depending on the plants.
- Top Dressing: A thin 1/4 inch layer is used to improve existing grass.
Common Topsoil Conversions & Facts
- 1 Cubic Yard: Covers 324 square feet at 1 inch deep.
- 1 Cubic Yard: Equals 27 cubic feet.
- Weight: A cubic yard of topsoil weighs about 2,000 to 2,500 lbs (1-1.25 tons) depending on moisture content.
- 40lb Bags: You need roughly 50-60 bags (40lbs) to equal one cubic yard.
Pro Tip
Topsoil can settle over time. It's often a good idea to order 5-10% more than your calculated amount to account for compaction and potential spillage.
help Frequently Asked Questions
How much topsoil do I need?
To calculate how much topsoil you need, multiply the length by the width of the area to get the square footage, then multiply by the depth of soil needed. Our calculator handles these conversions automatically.
How many bags of topsoil are in a cubic yard?
A cubic yard of topsoil typically requires about 27 bags of 1 cubic foot soil, or roughly 36 to 40 bags of standard 40lb topsoil, depending on moisture and density.
How thick should topsoil be for grass?
For a new lawn, a depth of 4 to 6 inches of good quality topsoil is recommended to encourage deep root growth. For overseeding or repairing patches, a thin layer of 0.25 to 0.5 inches is usually sufficient.