Topsoil Calculator
Easily calculate how much topsoil you need for your lawn, garden, or landscaping project. Enter your area dimensions and desired depth to get instant results in cubic yards, cubic feet, and tons.
Cubic Yards = Volume ÷ 27 | 40 lb Bags = CEILING(Volume ÷ 0.5 cu ft per bag)
Bulk Cost = Cubic Yards × Bulk Price/yd · Bag Cost = Bags × Bag Price
4 inches is standard for new lawns · 6–8 inches for garden beds · Always add 10–15% for settling · Bulk is dramatically cheaper above 1 cu yd · 1 cu yd = 27 cu ft = about 54 bags of 40 lb
Estimates based on 2026 US average pricing. Always confirm current pricing with your local landscape supply yard before ordering.
Understanding the Calculator Inputs
This topsoil calculator uses the standard volume formula — length × width × depth — to calculate cubic feet, then converts to cubic yards for bulk ordering and 40 lb bags for retail ordering. It also compares bulk vs bag cost for your specific project size and topsoil type.
Why Topsoil Depth Matters
Depth is the most critical variable — and the most commonly underestimated. Many homeowners apply 1–2 inches of topsoil thinking it will be enough, only to find that grass struggles and garden plants underperform. Grass roots need 4–6 inches of quality topsoil to establish properly. Vegetable gardens need 8–12 inches for full root development of most crops. Getting the depth right on the first order is always cheaper than ordering a second delivery.
Measuring Irregular Areas
For yards with irregular shapes, break the total area into rectangles, calculate each separately, and add the totals. Our Area Calculator handles circles, triangles, and L-shapes if you need help measuring. Once you have total square footage, enter any length × width combination that produces that area (e.g., 500 sq ft = 25 ft × 20 ft).
Always Add 10–15% for Settling
Topsoil compresses 10–20% after delivery as it settles, is graded, and moisture content normalizes. What looks like 4 inches right after spreading will compress to 3–3.5 inches over the first 2–4 weeks. Always order 10–15% more than the calculated amount to account for settling, uneven ground, and material lost at edges.
A 40 lb bag of topsoil covers approximately 0.5 cubic feet — meaning 54 bags equal 1 cubic yard. At $5–$9 per bag, 54 bags costs $270–$486. The same cubic yard in bulk costs $25–$60 plus delivery. For any project over 1–2 cubic yards, bulk delivery from a landscape supply yard is significantly cheaper. The calculator shows you the exact dollar comparison for your project.
3 Real-World Topsoil Examples
Example 1 — New Lawn Installation (1,500 sq ft, 4 inch depth)
Preparing a bare 1,500 sq ft backyard for new sod installation. Existing subsoil compacted — needs 4 inches of screened topsoil before sod is laid.
1,500 sq ft
Volume:1,500 × (4÷12) = 1,500 × 0.333 = 500 cu ft
Cubic yards:500 ÷ 27 = 18.5 cu yd
Add 15% settling allowance:18.5 × 1.15 = 21.3 cu yd — order 22 cu yd
| Option | Qty | Unit Cost | Total | Verdict |
|---|---|---|---|---|
| Bulk screened topsoil (delivered) | 22 cu yd | $28–$40/yd + $80 delivery | $696–$960 | Always use bulk at this volume |
| Bags (40 lb = 0.5 cu ft) | ~1,000 bags | $5–$9/bag | $5,000–$9,000 | 5–9× more expensive — avoid |
Real-world note: At 22 cubic yards, you'll likely need 2 dump truck loads — most standard landscape trucks hold 10–12 cubic yards. Ask the supplier if they can make two separate deliveries or arrange for a larger articulated dump truck. For 1,500 sq ft, a skid-steer or small tractor for spreading is worth the $200–$400 rental cost — spreading 22 yards of topsoil by hand takes 2–3 people a full day. Also: before delivery, confirm with your sod supplier the exact finished grade height they need — topsoil depth is often measured after compaction, and the supplier will tell you the target grade elevation relative to your edging or driveway.
Example 2 — Vegetable Garden Bed (20×12 ft, 8 inch depth)
Converting a 20×12 ft section of lawn to a raised-bed style vegetable garden. Existing soil poor quality — needs 8 inches of organic garden mix for productive vegetable growing.
20 ft × 12 ft = 240 sq ft
Volume at 8 inches:240 × (8÷12) = 240 × 0.667 = 160 cu ft
Cubic yards:160 ÷ 27 = 5.9 cu yd
Add 15% settling:5.9 × 1.15 = 6.8 cu yd — order 7 cu yd
| Item | Qty | Cost | Notes |
|---|---|---|---|
| Organic garden mix (bulk) | 7 cu yd | $42–$70/yd + $70 delivery | $364–$560 total |
| Or: topsoil (4 yd) + compost (3 yd) blend | 7 cu yd | $28–$45/yd avg + $70 | $266–$385 total |
| 40 lb bags (organic mix) | ~320 bags | $7–$12/bag | $2,240–$3,840 — avoid |
Real-world note: For vegetable gardens, the best approach is a 50/50 or 60/40 blend of topsoil and compost rather than pure topsoil. Pure topsoil is often too dense for root vegetables and can compact badly after rain. Ask your landscape supply yard if they offer a "garden mix" — a pre-blended topsoil/compost product — which typically costs $40–$70/cu yd but saves the work of blending separately. Alternatively, order topsoil and composted manure separately and mix them as you spread. Either way, 8 inches of quality organic-rich soil is the minimum for productive tomatoes, peppers, squash, and root vegetables.
Example 3 — Lawn Leveling / Top-Dress (2,500 sq ft, 1 inch depth)
Leveling an uneven 2,500 sq ft established lawn with ruts and low spots. Spreading 1 inch of screened topsoil over the entire area, then overseeding.
2,500 sq ft
Volume at 1 inch:2,500 × (1÷12) = 2,500 × 0.0833 = 208 cu ft
Cubic yards:208 ÷ 27 = 7.7 cu yd
Add 10% for low spots:7.7 × 1.10 = 8.5 cu yd — order 9 cu yd
| Option | Qty | Cost | Notes |
|---|---|---|---|
| Screened topsoil (bulk) | 9 cu yd | $28–$40/yd + $70 delivery | $322–$430 |
| 40 lb bags (convenience) | ~416 bags | $5–$8/bag | $2,080–$3,328 — avoid |
Real-world note: For lawn top-dressing and leveling, screened topsoil is the right product — not garden mix or organic blend. You want a fine-textured material that filters down through existing grass blades to fill low spots without smothering the existing turf. Spread with a lawn drag or the back of a hard-tined rake to work the topsoil into the grass. The existing grass should still be visible poking through — if the grass is completely buried, you've applied too much. 1 inch is the maximum depth for a single top-dressing application on an established lawn. For deeper ruts (2–3 inches low), fill in stages: apply 1 inch, let grass grow through, then apply another 1 inch the following month.
Topsoil Coverage Chart by Depth
Quick reference for how far 1 cubic yard covers at different depths, and how much you need for common area sizes. Not sure of your square footage? Use our Square Footage Calculator first.
| Depth | 1 Cu Yd Covers | 100 Sq Ft | 500 Sq Ft | 1,000 Sq Ft | 2,500 Sq Ft |
|---|---|---|---|---|---|
| 1 inch | ~324 sq ft | 0.3 cu yd | 1.5 cu yd | 3.1 cu yd | 7.7 cu yd |
| 2 inches | ~162 sq ft | 0.6 cu yd | 3.1 cu yd | 6.2 cu yd | 15.4 cu yd |
| 3 inches | ~108 sq ft | 0.9 cu yd | 4.6 cu yd | 9.3 cu yd | 23.1 cu yd |
| 4 inches | ~81 sq ft | 1.2 cu yd | 6.2 cu yd | 12.4 cu yd | 30.9 cu yd |
| 6 inches | ~54 sq ft | 1.9 cu yd | 9.3 cu yd | 18.5 cu yd | 46.3 cu yd |
| 8 inches | ~40 sq ft | 2.5 cu yd | 12.3 cu yd | 24.7 cu yd | 61.7 cu yd |
| 12 inches | ~27 sq ft | 3.7 cu yd | 18.5 cu yd | 37.0 cu yd | 92.6 cu yd |
Coverage assumes undisturbed topsoil before settling. Add 10–15% to all estimates for settling, compaction, and edge waste. Bulk topsoil is sold by the cubic yard — confirm with your supplier whether they measure loose or compacted volume.
Topsoil Types Guide (2026)
Not all topsoil is the same. Choosing the right type for your application affects both plant performance and value for money.
| Type | Bulk / Cu Yd | 40 lb Bag | Best For | Quality Notes |
|---|---|---|---|---|
| Fill Topsoil (unscreened) | $15–$30 | $4–$7 | Grade raising, filling low spots, structural fill | May contain debris, roots, clods — variable quality |
| Screened Topsoil | $25–$45 | $5–$9 | New lawns, general landscaping — most popular | Passed through screen to remove large debris; consistent texture |
| Premium Screened (double-screened) | $35–$55 | $7–$11 | Seeded lawns, fine grading — requires uniform texture | Finest texture; best for seed-to-soil contact |
| Organic Garden Mix | $40–$70 | $7–$12 | Vegetable gardens, flower beds — nutrient-rich | Blend of topsoil + compost; dark, fluffy, high organic matter |
| Topsoil + Compost Blend (50/50) | $30–$55 | $6–$10 | Garden beds, raised beds, transplanting — best plant growth | Better drainage and nutrient retention than pure topsoil |
| Sandy Loam Topsoil | $30–$50 | $6–$10 | Areas with drainage issues, sports fields | Higher sand content — drains faster, less compaction |
Topsoil quality varies enormously between suppliers and even between loads. Before ordering, ask: (1) Is this screened? What screen size? (2) What is the organic matter percentage? (3) Is it tested for pH? (4) Where does it come from — local site clearing or a specific blend? (5) Can I see a sample before ordering? A quality screened topsoil is dark brown, crumbles easily, has an earthy smell, and contains no large rocks, roots, or plastic debris. If a supplier can't answer basic quality questions, find another supplier.
Bulk vs Bag Cost Comparison (2026)
The cost difference between bulk and bagged topsoil is massive — especially for larger projects. Here's the full comparison at a standard 4-inch application depth.
| Area (4" depth) | Cu Yds Needed | Bulk Cost (w/ delivery) | Bag Cost (40 lb) | Bulk Savings |
|---|---|---|---|---|
| 100 sq ft | 1.2 cu yd | $100–$130 (incl. delivery) | $65–$116 (65 bags) | Bags cheaper for this size |
| 300 sq ft | 3.7 cu yd | $174–$250 (incl. delivery) | $200–$356 (200 bags) | Save ~$26–$106 |
| 500 sq ft | 6.2 cu yd | $244–$338 (incl. delivery) | $333–$594 (333 bags) | Save ~$89–$256 |
| 1,000 sq ft | 12.4 cu yd | $417–$566 (incl. delivery) | $667–$1,188 (667 bags) | Save ~$250–$622 |
| 2,500 sq ft | 30.9 cu yd | $935–$1,306 (incl. delivery) | $1,667–$2,970 (1,667 bags) | Save ~$732–$1,664 |
Bulk prices: screened topsoil $28–$40/cu yd + $70 delivery. Bag prices: $5–$9 per 40 lb bag (0.5 cu ft each). Local prices vary — always call for a current quote before ordering.
Depth Guide by Application
The most common topsoil mistake is applying too little — which forces a second order that costs more than getting it right the first time. Here are the recommended depths by application type.
| Application | Minimum Depth | Ideal Depth | Notes |
|---|---|---|---|
| Lawn top-dressing / leveling | 0.5 inch | 1 inch | Maximum 1 inch per application on established lawn |
| Overseeding existing lawn | 0.5 inch | 1–2 inches | Light cover to improve seed-to-soil contact |
| New lawn from seed | 4 inches | 6 inches | 4 inches absolute minimum; 6 gives better drought tolerance |
| New lawn with sod | 4 inches | 4–6 inches | Sod roots need 4 inches to establish; grade to match edging height |
| Flower bed (annuals) | 4 inches | 6 inches | Most annuals root to 4–6 inches |
| Perennial garden | 6 inches | 8–12 inches | Deep roots need more topsoil depth |
| Vegetable garden | 8 inches | 12 inches | Root vegetables (carrots, beets) need 12+ inches; 8 minimum for others |
| Shrubs / hedges | 12 inches | 18 inches | Deep root zone for established shrubs |
| Tree planting | 18 inches | 24 inches | Quality topsoil in planting zone improves establishment |
Topsoil vs Fill Dirt vs Garden Mix
These three materials are frequently confused — and using the wrong one is an expensive mistake. Here's exactly when to use each.
| Material | What It Is | Cost | Use When | Never Use When |
|---|---|---|---|---|
| Topsoil | Top 12 inches of earth — organic-rich, dark, fine-textured | $25–$55/cu yd | Lawns, general landscaping, light gardens | Filling large grade changes (too expensive) |
| Fill Dirt | Subsoil — clay-heavy, low organic matter, structural | $5–$20/cu yd | Filling large holes, grade raising, structural fill | Planting directly — nothing grows well in it |
| Garden Mix | Blended topsoil + compost + sometimes perlite or sand | $40–$80/cu yd | Vegetable gardens, raised beds, transplanting | Large lawn areas (too expensive, too loose) |
| Compost | Decomposed organic matter — nutrient-rich amendment | $30–$60/cu yd | Amending poor soil, top-dressing established beds | Sole growing medium (too rich and loose alone) |
For large grade changes (raising an area by 6+ inches), use fill dirt for the bottom 60–70% of the depth and cap with topsoil for the top 4–6 inches. Fill dirt is $5–$20/cu yd vs $25–$55 for topsoil — using it for bulk fill and reserving topsoil for the growing layer saves significantly on large projects. Example: raising a 500 sq ft area by 12 inches — use 7 cu yd of fill dirt for the bottom 8 inches ($35–$140) then 3.1 cu yd of screened topsoil for the top 4 inches ($87–$171) — total $122–$311 vs $278–$617 for all topsoil.
Common Topsoil Mistakes
Not Ordering Enough — Underestimating Settling
The most common mistake. Topsoil settles 10–20% after delivery — what looks like 4 inches right after spreading becomes 3–3.5 inches within a few weeks. Many homeowners calculate exactly what they need and order that amount, only to find they're short after the first rain. Always add 10–15% to your calculated volume. The cost of a second small delivery is always more per cubic yard than adding to the original order.
Buying Bagged Topsoil for Large Projects
Bagged topsoil from home improvement stores costs $5–$9 per 40 lb bag, which equals $270–$486 per cubic yard — 5–15× the price of bulk. For any project over 1–2 cubic yards, a single call to a local landscape supply yard for bulk delivery saves hundreds of dollars. Many homeowners don't realize landscape supply yards sell to the public (not just contractors) and will deliver with a minimum of 1–3 cubic yards depending on the supplier.
Using Fill Dirt Where Topsoil Is Needed
Fill dirt is significantly cheaper than topsoil ($5–$20/cu yd vs $25–$55/cu yd), which leads some homeowners to use it for lawn areas or garden beds to save money. Fill dirt is subsoil — it has very low organic matter, poor drainage, and compacts badly. Grass planted in fill dirt without a topsoil cap struggles for years. Vegetables planted in fill dirt produce poorly or fail entirely. Fill dirt is appropriate for structural fill under the topsoil layer; it should never be the growing medium.
Not Amending with Compost for Garden Beds
Pure bulk topsoil is adequate for lawns but often too dense and nutrient-poor for productive vegetable and flower gardens. Topsoil from many local yards is former agricultural or construction site soil that has been depleted of organic matter. For any productive garden application, blend topsoil 50/50 with compost, or ask your supplier for a pre-blended garden mix. The $10–$25/cu yd premium for a garden mix pays back immediately in plant performance compared to pure topsoil.
How We Calculate
Volume (cu ft) = Length (ft) × Width (ft) × (Depth (in) ÷ 12)
Cubic Yards = Volume (cu ft) ÷ 27
40 lb Bags = CEILING(Volume ÷ 0.5) — each 40 lb bag of topsoil covers approximately 0.5 cubic feet.
Bulk cost ranges use 2026 national average retail prices per cubic yard by topsoil type. Bag cost uses 2026 average retail price per 40 lb bag. Bulk pricing includes an estimated $70 delivery fee — actual delivery fees vary by supplier and distance. Topsoil prices are typically 10–20% lower in late summer/fall vs peak spring season. Always call your local landscape supply yard for current pricing before finalizing your order.