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CM into Inches
Construction · Calculator

Soil Calculator

Calculate topsoil needed in cubic yards for garden beds or landscaping.

Soil Calculator

Estimate the cubic yards of topsoil required for your garden or lawn.

Formula

yd³ = (l × w × d/12) / 27

Step-by-step

  1. Convert depth to feet
  2. Multiply l × w × d for cubic feet
  3. Divide by 27 for cubic yards
  4. Divide by 1.5 for bags

Example

20×10×6in = 3.7 yd³, 67 bags.

FAQ

How deep should topsoil be?+

Lawns need 4–6 inches; garden beds 8–12 inches.

How much does a bag of soil hold?+

A typical bag holds about 1.5 cubic feet.

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