Topsoil Calculator — How Many Yards or Tons for Your Lawn

Calculator

Length

Width

Depth

Soil type

Bulk price (per yd³)

$/yd³

Bag price (1 ft³)

$/bag

You need

3.70 cubic yards

= 100.00 ft³ · 4.81 tons · ≈ 100 bags (1 ft³)

Bulk: $111 · Bagged: $400 (save $289 with bulk)

How to Calculate Topsoil Quantity

Topsoil is sold by volume (cubic yards) but delivered by weight (tons). The challenge in calculating how much you need is converting between the units consistently. Area measurements are typically in square feet, depths in inches, and you'll order in cubic yards. Our calculator automates all the conversions — here's the underlying math:

Cubic yards = (Area in sq ft × Depth in inches) ÷ 324
Weight (tons) = Cubic yards × 1.30 (dry topsoil density)
Order quantity = Cubic yards × 1.10 (10% for settling)

The constant 324 converts everything: it's 12 (inches per foot) × 27 (cubic feet per cubic yard). The density factor of 1.30 t/yd³ assumes dry, screened topsoil — wet topsoil weighs 15-20% more, important to know when checking delivery weight limits.

Worked example: full lawn installation

Replacing or installing a new lawn on a typical suburban back yard: 1,000 sq ft area, 4 inches deep:

Volume: (1,000 × 4) ÷ 324 = 12.35 cubic yards
Weight (dry): 12.35 × 1.30 = 16.05 tons
With 10% settling buffer: Order 13.6 cubic yards
Bulk cost (at $30/yd³): $408
Delivery: Add $50-150 depending on distance

Always till topsoil into existing soil

Pure topsoil layered over compacted subsoil creates a drainage barrier — water collects at the interface, roots can't penetrate downward, and plants struggle. Till the top 6-12 inches to blend new topsoil with existing soil. This single step is what separates lawns that thrive from lawns that fail.

How Deep Should Topsoil Be?

Depth requirements depend on what you're growing. Going deeper than necessary wastes money; too shallow causes long-term plant struggle. Recommended depths by project:

New lawn (seeded or sodded)

4-6 inches. Most lawn grasses develop roots 6-12 inches deep when conditions permit. 4 inches is the minimum for healthy lawn establishment; 6 inches is preferred for premium installations. Below 4 inches, lawn vigor suffers within 2-3 years.

Sod installation

4 inches minimum of prepared topsoil before laying sod. The sod itself brings 1/2 inch of growing medium, but its roots need to grow into your soil within 2-3 weeks. Insufficient depth = sod that browns and lifts when stressed by heat or drought.

Garden beds (in-ground)

6-12 inches of topsoil tilled in with existing soil. Vegetable gardens benefit from deeper amendment (12 inches) for root crops like carrots and parsnips. Flower beds need 6-8 inches. Most failures here come from cutting corners on depth.

Raised garden beds

Full depth of the bed — typically 8 to 18 inches. Use a soil mix (topsoil + compost + amendments), not pure topsoil. Pure topsoil in raised beds compacts and drains poorly; a proper mix stays loose and productive for years.

Grade leveling / regrading

Variable depending on existing grade vs target grade. Use fill dirt for most of the volume below 4 inches, then top with 4+ inches of topsoil where plant growth is desired. Pure topsoil for grading is wasteful — fill dirt is half the price.

Top dressing existing lawn

1/4 inch maximum at a time. Thicker layers smother existing grass. For leveling small depressions, you can fill up to 1 inch but expect the grass underneath to die — be ready to reseed.

Topsoil Quantity by Project

Quick reference for the most common topsoil projects:

Project	Topsoil needed	Bulk cost (at $30/yd³)
500 sq ft lawn @ 4"	6.2 yd³ (8 tons)	$185
1,000 sq ft lawn @ 4"	12.3 yd³ (16 tons)	$370
1,000 sq ft lawn @ 6"	18.5 yd³ (24 tons)	$555
2,500 sq ft lawn @ 4"	30.9 yd³ (40 tons)	$925
5,000 sq ft lawn @ 4"	61.8 yd³ (80 tons)	$1,850
200 sq ft garden bed @ 6"	3.7 yd³ (4.8 tons)	$110
500 sq ft garden bed @ 8"	12.3 yd³ (16 tons)	$370
4x8 raised bed @ 12"	1.2 yd³ (1.5 tons)	$36
Top dressing 1,000 sq ft @ 1/4"	0.77 yd³ (1 ton)	$23

Choosing the Right Topsoil

"Topsoil" is a category with significant variation in quality. Knowing what to ask for saves money and improves results.

Screened topsoil (recommended)

Sifted through 1/2 inch mesh to remove rocks, sticks, and clumps. Worth the $10-15/yd³ premium for any precision work — lawn installation, vegetable gardens, premium landscaping. Cost: $30-55/yd³. Distinguishes from "regular topsoil" or "unscreened."

Pulverized topsoil

Mechanically broken down to fine, uniform texture — even smoother than screened. Premium product for high-end lawn installation and golf course-quality grass establishment. Cost: $40-70/yd³. Overkill for most residential projects.

Regular (unscreened) topsoil

Stripped from agricultural fields or construction sites without sifting. May contain rocks, debris, weed seeds. Fine for fill projects or grade adjustment; problematic for lawns or vegetable beds. Cost: $20-35/yd³. Buy only if you can accept the debris content.

Compost-amended topsoil

Topsoil pre-mixed with 20-30% compost. Ready for lawn or garden installation without additional amendment. Convenient but expensive per yard. Cost: $40-65/yd³. DIY version (buy topsoil + compost separately, mix yourself) saves 20-30%.

Black dirt (regional term)

In the Midwest US, "black dirt" usually means dark, organic-rich topsoil — premium grade. In other regions, it can mean anything dark colored, including peat-rich soils that compact when dry. Ask suppliers specifically what "black dirt" means in their inventory.

How to Install New Lawn Topsoil

A successful new lawn depends on proper soil prep. Here's the professional process:

Remove existing vegetation. Spray glyphosate herbicide 7-14 days before, or strip sod manually. Don't try to till live grass — it regenerates.
Test soil pH. $15 home test kit. Most lawns thrive at pH 6.0-7.0. Adjust with lime (raise pH) or sulfur (lower pH) before topsoil arrives.
Loosen existing soil. Rototill the top 6-8 inches of existing ground. This breaks compaction and creates a transition zone for new topsoil.
Deliver and spread topsoil. Have the truck dump in stages around the area. Use a wheelbarrow and rake to spread 4-6 inches evenly.
Till topsoil into existing soil. Critical step. Use rototiller to mix the top 4 inches of new topsoil with the top 4 inches of existing soil. Creates a continuous root zone.
Grade and level. Use a landscape rake to level. Slope away from buildings at 1-2%. Roll lightly with a partially-filled lawn roller to settle.
Seed or sod. Apply seed/starter fertilizer at recommended rates, or lay sod with staggered seams. Water immediately and keep moist for 14-21 days.
Top up at 4-6 weeks. Settled depressions get a 1/4 inch top dressing of additional topsoil. Reseed/resod as needed.

Costs Beyond the Topsoil Itself

For a new lawn project, topsoil is usually 30-40% of total cost. Don't forget to budget for:

Delivery: $50-150 per load (truck holds 5-15 yards typically)
Equipment rental: Rototiller $80-120/day, landscape rake $20/day, wheelbarrow $0 (buy a good one)
Seed or sod: Seed $30-50/lb (covers 250-350 sq ft); sod $0.30-0.75/sq ft installed
Starter fertilizer: $30-60 per 1,000 sq ft
Soil amendments: Lime, sulfur, compost — typically $50-150 for amendments
Irrigation: Sprinkler heads ($20-50 ea), hose timers ($30-80) if irrigation needed
Labor (if hired): $40-60/hr for unskilled labor; lawn install companies charge $1.50-3/sq ft turnkey

Common Topsoil Mistakes

Skipping the till-in step: Pure topsoil over compacted subsoil = drainage barrier = unhealthy lawn within 2 seasons
Going too shallow: 2-3 inches isn't enough for healthy turfgrass roots. Spend on depth.
Buying unscreened for lawn work: Rocks and debris ruin lawn quality and damage mowers for years afterward.
Forgetting settling buffer: 12 yards installed becomes 10 yards visible by spring. Order with 10-15% buffer.
Wrong depth for raised beds: Pure topsoil compacts in raised beds. Use proper soil mix (topsoil + compost + amendments).
Buying bagged for big projects: 12 yards of lawn topsoil in bags costs $1,700-2,400 vs $360-500 bulk. Always bulk above 1 yard.

Frequently Asked Questions

How much topsoil do I need for a new lawn?

Apply 4-6 inches of topsoil for new lawn installation. For 1,000 sq ft at 4 inches: 12.3 cubic yards (~16 tons). At 6 inches: 18.5 cubic yards (~24 tons). Always till new topsoil into existing soil 6-12 inches deep — don't layer separately.

How much does a yard of topsoil weigh?

Dry screened topsoil weighs about 2,600 lb (1.3 tons) per cubic yard. Wet topsoil hits 3,000-3,400 lb. The variation matters: a 'tandem axle truck' (15-yard capacity by volume) can only legally carry about 10 yards of wet topsoil before hitting weight limits.

How much does topsoil cost?

Bulk topsoil costs $20-50 per cubic yard delivered in 2026. Screened topsoil (sifted to remove rocks/debris) runs $30-55/yd³. Premium 'pulverized' topsoil with amendments: $40-70/yd³. Bagged topsoil at home improvement stores is $4-6 per 0.75 ft³ bag (about $150-200/yd³ equivalent).

What's the difference between topsoil and fill dirt?

Topsoil is the dark, organic-rich top 4-8 inches of natural soil — supports plant growth. Fill dirt is subsoil below the topsoil layer — heavier, denser, no organic matter, used only for raising grade or filling holes. Never plant directly in fill dirt; plants will struggle or die.

How deep should topsoil be for grass?

4-6 inches of quality topsoil for new lawn installation. Grass roots typically extend 6-12 inches deep, so this depth supports healthy root development. For high-end lawns or sod installations, 6 inches is preferred. Existing lawn overseeding only needs 1/4 inch top dressing.

How much topsoil for a garden bed?

For a 4x8 raised bed at 12 inches deep, you need 32 cubic feet (1.19 cubic yards). For in-ground garden bed prep at 6 inches deep over existing soil: 200 sq ft needs 3.7 cubic yards. Always mix topsoil into existing soil — don't layer pure topsoil over compacted ground.

Can I add topsoil to my existing lawn?

Yes, in thin layers as 'top dressing.' Apply 1/4 inch maximum over existing grass; thicker layers smother the lawn. Use screened topsoil only (no debris). Rake in evenly. For major lawn repair or leveling, remove existing grass first, install 4 inches of topsoil, then reseed.

How many yards of topsoil in a dump truck?

Dump truck capacity depends on size: pickup truck 1-1.5 yards (weight-limited), single-axle dump 5-8 yards, tandem-axle 10-14 yards, tri-axle 14-18 yards. Wet topsoil hits weight limits faster than dry — a 'full' truckload may actually be 70-80% of volume capacity.

How long does it take topsoil to settle?

Fresh topsoil settles 10-20% over the first 6 months as air gaps compress and organic matter decomposes. For raised beds, overfill by 2-3 inches initially. For lawn projects, return at 4-6 weeks to top up any depressions before final seeding or sodding.

Is screened topsoil worth the extra cost?

Yes for lawns, vegetable gardens, and any precision work. Unscreened topsoil contains 5-15% debris (rocks, sticks, clumps) that interferes with grass establishment and root penetration. Screened topsoil is sifted through 1/2 inch mesh. The $10-15/yard premium pays back in time saved.

How much area does a ton of topsoil cover?

One ton of dry topsoil covers approximately 81 sq ft at 2 inches deep, 54 sq ft at 3 inches, 41 sq ft at 4 inches, or 27 sq ft at 6 inches. These figures use the standard 1.3 t/yd³ density; coverage decreases ~15% for wet topsoil.

Should I till topsoil into existing soil?

Yes, always. Pure topsoil layered on compacted subsoil creates an interface where water collects and roots can't penetrate downward. Till the top 6-12 inches to blend new topsoil with existing soil. This creates a continuous root zone that drains properly and supports healthy plant growth.