Topsoil for a 50×30 ft Lawn at 4 Inches Deep
Establishing a new 50×30 ft lawn with 4 inches of topsoil requires approximately 18.5 cubic yards.
How to use this tool
- Enter the area dimensions in feet and the desired soil depth in inches.
- The calculator returns cubic feet, cubic yards, and equivalent 40 lb bags.
- Order bulk delivery for areas over 2 cubic yards — it's more economical.
A new 50×30 ft lawn area needs about 18–19 cubic yards of topsoil at 4 inches deep — plan for multiple delivery loads.
Frequently asked questions
- How much topsoil do I need?
- Multiply length × width (ft²) by depth in feet (inches ÷ 12). Divide by 27 for cubic yards. A 40 lb bag holds roughly 0.75 cubic feet.
- How deep should topsoil be for a lawn?
- A minimum of 4–6 inches of good topsoil is recommended for healthy grass. For raised vegetable beds, aim for 12 inches or more.