Topsoil Calculator

Calculate how many cubic yards of topsoil you need for lawn installation, garden beds, raised planters, or grading projects. Enter your area dimensions and desired soil depth, and our topsoil calculator gives you results in cubic yards for bulk delivery, tons for weight-based ordering, and 40 lb bag counts for smaller purchases. Quality topsoil depth matters — most vegetables and lawn grass need at least 4 to 6 inches of good topsoil to establish strong root systems.

Enter Your Measurements

Area Length(ft)

Area Width(ft)

Soil Depth(in)

Results

Topsoil Needed

3.70

cubic yards

Approximate Weight

4.07

tons

40 lb Bags

134

bags

Area

200

sq ft

Cost Estimate

Cost per cubic yard

per cubic yard

Estimated Cost

$111.11

Formula

Cubic Yards = (Length × Width × Depth ÷ 12) ÷ 27

How to Use This Calculator

How to Use

1
Measure the length and width of the area in feet — for irregular lawn areas, break the space into rectangles and calculate each section separately.
2
Enter your target soil depth: 2 to 4 inches for lawn top-dressing, 4 to 6 inches for a new lawn or garden bed, and 6 to 12 inches for new garden beds or raised areas.
3
Review cubic yard results for bulk delivery ordering — most topsoil suppliers sell by the cubic yard or fraction thereof.
4
For small patches, use the bag count result to buy bagged topsoil at a hardware store, though bulk is significantly cheaper for areas over 50 square feet.

Frequently Asked Questions

How deep should topsoil be for a new lawn?

New lawns need a minimum of 4 inches of quality topsoil, though 6 inches gives significantly better results and drought resilience. Grass roots need loose, nutrient-rich soil to establish properly — compacted subsoil or thin topsoil leads to thin, stressed turf that struggles in heat and drought. If you're laying sod, 4 to 6 inches is the standard recommendation. For seed, 6 inches gives the best germination environment. Remove any existing grass and weeds before adding topsoil.

What is the difference between topsoil and garden soil?

Topsoil is the naturally occurring upper layer of earth, consisting of mineral particles, organic matter, water, and air. Quality varies enormously — some topsoil is rich and loamy, while other topsoil is mostly clay or sand. Garden soil is a manufactured product: topsoil blended with compost, peat moss, or other amendments to create a balanced growing medium for plants. Garden soil is more consistent in quality and better for container gardens or raised beds, while bulk topsoil is more economical for large grading or lawn projects.

How much does bulk topsoil cost?

Bulk topsoil typically costs $15 to $50 per cubic yard depending on quality and your region. Screened, premium topsoil blended with compost runs $30 to $60 per yard. Delivery adds $50 to $150 per load. Bagged topsoil at hardware stores costs $3 to $7 per 40 lb bag, which equals roughly $80 to $190 per cubic yard — three to five times more expensive than bulk. For any project requiring more than 2 cubic yards, bulk delivery is almost always the better value.

How do I improve poor quality topsoil?

The most effective way to improve poor topsoil is to mix in generous amounts of compost — 2 to 4 inches of compost tilled 6 to 8 inches deep transforms clay or sandy soil into a productive growing medium within one to two seasons. For heavy clay soil, adding coarse sand (not fine sand) along with compost improves drainage. For sandy soil that drains too fast, compost alone is the best amendment. Avoid adding pure sand to clay soil without compost — the combination can create a concrete-like result.

Can I use topsoil to level my yard?

Yes, topsoil is commonly used to fill low spots, level uneven grades, and build up areas before sodding or seeding. For minor leveling (under 2 inches), use a leveling mix of 40% topsoil and 60% sand for better drainage and easier spreading. For significant grade changes, use fill dirt for the bulk of the work and cap it with 4 to 6 inches of quality topsoil. Allow fill areas to settle for several weeks before seeding or sodding, or water and compact the area thoroughly to speed up the process.

In-Depth Guides

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How Much Mulch Do You Need? Coverage & Cost Guide

Find out exactly how many cubic yards or bags of mulch to buy. Covers coverage at different depths, mulch types, bulk vs. bagged cost comparison, and application tips.

📖

How Much Topsoil Do You Need? Cubic Yards & Coverage Guide

Calculate topsoil for gardens, lawns, and raised beds. Learn how deep to apply it, bulk vs bagged costs, and how to amend poor soil.

📖

Raised Garden Bed Guide: Soil, Size & Materials Calculator

Build the perfect raised garden bed. Calculate soil volume, choose the right size and materials, and learn the best soil mix for vegetables.

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About This Calculator

This calculator uses the formula: Cubic Yards = (Length × Width × Depth ÷ 12) ÷ 27. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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