How Much Topsoil for a 20×40 Lawn?

The answer

10.37 cubic yard

For a 20×40 ft lawn at 4" depth, with 5% overage included. Estimated cost: $394 at US national average pricing.

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Depth (inches)

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You need

—

cubic yard

Area: —
Volume: —
With 5% overage: —
Or in 1 cu ft bag: —
Estimated cost (US avg): —

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How we calculated this

1. Area: 20 × 40 = 800 sq ft
2. Volume: 800 × (4/12) = 266.67 cubic feet
3. Convert + overage: Add 5% for waste → 10.37 cubic yard
4. Cost: 10.37 × $38.00 ≈ $394

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