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Topsoil Calculator โ€” How Much Topsoil Do I Need?

Calculate cubic yards of topsoil needed for garden beds, lawn repairs, and landscaping projects.

12 ft8 ft96 sq ftTopsoil area

Your Results

1.19

Cubic Yards

32.0

Cubic Feet

32

Bags (1 cu ft)

1.30

Tons

* ~2,200 lbs per cubic yard. Add 10% for settling.

Coverage at Different Depths โ€” 96 sq ft

DepthCu YardsBags (1 cu ft)Weight
2 inches0.59160.65 tons
3 inches0.89240.98 tons
4 inches1.19321.30 tons
6 inches1.78481.96 tons
8 inches2.37642.61 tons
12 inches3.56963.91 tons

Formula

Formula: Cubic Yards = (Length ร— Width ร— Depth) รท 324 Where Length and Width are in feet, Depth in inches. Weight (lbs) = Cubic Yards ร— 2,200

Worked Example

Example: 20 ft ร— 15 ft area at 4 inches deep. Cubic feet = 20 ร— 15 ร— (4รท12) = 100 cu ft Cubic yards = 100 รท 27 = 3.70 cu yd Order 4 cubic yards to account for settling.

Frequently Asked Questions

How much topsoil do I need for a 10ร—10 garden bed at 4 inches deep?

For a 10ร—10 ft bed (100 sq ft) at 4 inches deep you need 1.23 cubic yards โ€” about 34 one-cubic-foot bags, or roughly 2,700 lbs if bulk-ordered by the ton.

How deep should I put topsoil?

For new garden beds: 4โ€“6 inches of topsoil over existing soil. For lawn repair or overseeding: 1โ€“2 inches. For raised beds from scratch: 8โ€“12 inches is ideal.

How many cubic yards are in a truckload of topsoil?

A standard pickup truck bed holds about 1โ€“2 cubic yards. A small dump truck carries 5โ€“7 cubic yards. A full-size dump truck carries 10โ€“14 cubic yards.

How much does a cubic yard of topsoil weigh?

Topsoil weighs approximately 2,000โ€“2,400 lbs per cubic yard when dry. The average used for bulk estimates is 2,200 lbs/cu yd.

What is the difference between topsoil and fill dirt?

Topsoil contains organic matter, nutrients, and beneficial microbes โ€” it supports plant growth. Fill dirt is subsoil with little organic content used to raise grade or fill holes.

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