Free Topsoil Calculator — How Much Topsoil Do I Need? (Cubic Yards & Bags)

Multiply length × width × depth — all converted to feet — then divide by 27 to get cubic yards of topsoil. Depth in inches becomes depth in feet by dividing by 12, so a 20 × 30 ft area at 4 inches deep is (20 × 30 × 0.333) ÷ 27 = 7.4 cu yd before settling. Add 10–15% for compaction and round up to the nearest 0.25 cu yd to land on the order quantity your bulk supplier will deliver.

Topsoil Volume Formula

How to Measure Your Area

For a rectangular lawn or garden bed, run a tape from corner to corner along the longest side for length, then perpendicular for width — accuracy to the nearest foot is enough for bulk topsoil ordering. For a circular bed, measure the diameter at the widest point and use the area formula π × (diameter ÷ 2)², then multiply by depth and divide by 27 the same way.

For an L-shaped or stepped area, split the footprint into two rectangles and add their square footage before applying the depth and the divide-by-27 step. Curves and irregular edges round more naturally if you trace the bed with a garden hose, then measure the bounding rectangles inside it. If your area is part of a larger landscape plan, our cubic yards calculator walks the conversion across any volume calculation in our Volume hub.

Topsoil coverage chart — square feet per cubic yard

One cubic yard of topsoil covers a fixed footprint at any given depth. Use the chart to cross-check your calculation: divide your square footage by the value in column 2 to get cubic yards before settling. Coverage halves as depth doubles, which is why a vegetable bed burns through topsoil faster than a lawn topdressing.

Formula: sq ft per cu yd = 324 ÷ depth (in). Derived from 27 cu ft per cubic yard ÷ depth in feet.

Topsoil depth depends entirely on what you are growing on top of it. A new lawn from seed or sod needs 4–6 inches of screened topsoil over prepared subgrade. Lawn repair and topdressing on existing turf needs only 1–2 inches. Vegetable garden beds need 8–12 inches for healthy root development; raised beds need 10–18 inches depending on the frame and the crop. The presets in the calculator above match these standards.

Topsoil Depth for a New Lawn

Apply 4–6 inches of screened topsoil over a graded subgrade for a new lawn from seed or sod. Four inches is the minimum for adequate root development; six inches gives drought resilience and a more forgiving margin if the subgrade is uneven. USDA NRCS cooperative extension publications recommend 4 inches as the standard residential lawn-establishment depth. Rototill the top inch or two of subgrade before placing topsoil so the root zone blends into the existing soil profile rather than sitting on a hardpan.

Topsoil Depth for Lawn Repair & Topdressing

For lawn repair, topdressing, and overseeding, apply 1–2 inches of screened topsoil over an aerated lawn. Run a core aerator before placing the topsoil so the new material can settle into the aeration plugs and reach the root zone, rather than smothering existing grass. Two inches is the maximum that established turf will grow through without thinning; deeper topdressing should be done in two passes a season apart.

Topsoil Depth for Vegetable & Garden Beds

Vegetable beds need 8–12 inches of topsoil for most leafy greens, brassicas, and shallow-root annuals. Deep-rooted crops — tomatoes, carrots, parsnips, full-size root vegetables — prefer 12 inches or more, with 18 inches as a comfortable upper bound for organic raised gardening. Mix compost into the top 4–6 inches so organic matter sits in the rooting zone rather than draining out the bottom of the bed.

Topsoil Depth for Raised Beds

Raised beds need 10–18 inches of topsoil depending on frame size and what you intend to grow. A 12-inch frame fully filled with topsoil suits salad greens, herbs, and bush beans. Deeper 16–18-inch beds support tomatoes, peppers, and root vegetables without root binding against the bottom. For frames over 24 inches deep, save money by filling the bottom third with brush, leaves, or a fill-dirt layer below the topsoil zone.

Bagged topsoil makes sense for projects under 1 cubic yard, no truck access, or strict HOA rules; bulk delivery is 8–10 times cheaper per cubic yard for everything else. A standard 40-lb bag holds about 0.5 cubic feet, so 54 bags equal one cubic yard at retail prices of $5–$9 per bag. The calculator above flags bulk savings the moment your order crosses the threshold where delivery beats retail.

How Many 40-lb Bags Equal One Cubic Yard?

A cubic yard equals 27 cubic feet. Bag-count math depends entirely on how the bag is packaged — by volume, not weight. The most common bag at big-box retailers is 0.5 cu ft packed at 40 lbs (54 bags per cubic yard). Premium brands package the same 40 lbs at 0.75 cu ft for a fluffier loam mix (36 bags per cubic yard). One-cubic-foot contractor bags take exactly 27 bags per cubic yard.

When to Choose Bags Over Bulk

Choose bags when your total order is under 1 cubic yard, you cannot get a delivery truck to the placement area, or your HOA prohibits material drops in driveways. Bags also win when you only have a passenger car for transport — a half-ton pickup safely carries about 0.5 cubic yards of bulk topsoil, while bagged product fits any vehicle in manageable trips. Above 1 cubic yard, bulk delivery is almost always cheaper and faster, even after delivery fees.

For mid-size projects between 1 and 3 cubic yards, run the bag-vs-bulk numbers in the calculator above. Most suppliers charge a $25–$75 short-load fee on orders below 3 cubic yards, which can erase the bulk price advantage. If your unit price plus the short-load fee still beats the bagged-equivalent retail cost, order bulk; if not, bags are the better choice for that scope.

Bulk screened topsoil costs $25–$55 per cubic yard delivered in the US in 2026, with organic-blend topsoil running $40–$70 per cubic yard. Unscreened or fill-grade topsoil drops to $15–$30 per cubic yard. Delivery fees add $50–$150 per load depending on distance from the supplier. Source: Means Site Work & Landscape Cost Data 2026 cross-checked against regional supplier listings.

Updated May 2026. Cost data refreshed twice per year (spring and fall) to track regional supply-chain and seasonal demand shifts. Next refresh: September 2026.

Screened vs. Unscreened Topsoil Cost

Screened topsoil runs $25–$55 per cubic yard because it has been pulled through a mechanical screen that removes rocks, sticks, root debris, and other oversize material. Unscreened topsoil drops to $15–$30 per cubic yard but arrives with whatever the loader scooped from the stockpile — usable for low-spec fill but unsuitable for lawn or garden use without hand-picking the debris first. For any planting application, pay the premium for screened product; the labor saved is worth the difference.

Topsoil Delivery Cost

Delivery costs $50–$150 per load on top of the per-cubic-yard material price, with the exact fee driven by distance from the supplier and the truck size required. A standard single-axle dump truck delivery within 15 miles runs $50–$80; loads beyond 30 miles or requiring a tandem-axle truck push toward $150 or more. Most suppliers also charge a $25–$75 short-load fee on orders below 3 cubic yards because the truck runs partially full.

Avoid the short-load fee by combining your topsoil order with related materials when your project allows — order topsoil and mulch in the same delivery if both are coming from the same supplier, or stack a sand bedding layer with your topsoil for paver projects. Splitting one delivery fee across two materials is the cleanest way to bring per-yard cost down on small jobs.

A cubic yard of moist screened topsoil weighs about 2,000–2,400 lbs — roughly one US ton. Dry topsoil drops to 1,000–1,300 lbs per cubic yard, while saturated topsoil after rain can reach 2,500 lbs per cubic yard. A half-ton pickup truck safely hauls 0.5–1 cu yd; a single-axle dump truck handles 10–14 cu yd per load. Plan your trips by weight, not volume, because topsoil is denser than it looks.

How Much Does a Cubic Yard of Topsoil Weigh?

Screened loamy topsoil weighs 2,000–2,400 lbs per cubic yard at typical moist field condition — close to one US short ton per yard, which is why suppliers price by both the cubic yard and the ton. Sandy topsoil sits at the low end of the range; clay-rich topsoil pushes toward the high end. Moisture state changes weight more than composition: dry topsoil weighs 1,100 lbs per cubic yard, moist topsoil 2,200 lbs, and wet/saturated topsoil can hit 2,500 lbs. The moisture toggle in the calculator above swaps the density for these three states.

Topsoil Truck Load Capacity

Pickup-truck topsoil hauling is weight-limited, not volume-limited. A half-ton truck like an F-150 has roughly 1,200–2,400 lbs of payload capacity depending on trim, which caps topsoil at 0.5–1 cubic yard per trip in moist condition. Heaping a full cubic yard in a half-ton bed exceeds payload, hammers the suspension, and creates a dangerous high-center of gravity. For larger jobs, a single-axle dump truck delivery handles 10–14 cubic yards in one load — the standard residential bulk-topsoil unit.

Capacity figures based on manufacturer payload ratings cross-checked against Lawnsite.com landscaper field reports. Always confirm your specific vehicle's payload sticker before loading.

Topsoil and fill dirt come from the same job site but serve opposite purposes. Topsoil is the dark upper 4–12 inches of the profile — rich in organic matter, microbes, and the nutrients that plants need to grow. Fill dirt is the subsoil layer below — minimal organic content, used to raise grades, fill voids, and build up structural areas under driveways, patios, and foundations. Use the right material for the job; mixing them costs you twice.

On a typical residential project, fill dirt goes in first to raise grade or fill voids; a topsoil cap of 4–6 inches goes on top to support the planting layer. If you are filling voids or raising grade rather than planting, use the Fill Dirt Calculator (coming soon to CalcSummit's Project silo) for the structural fill, then come back to this Topsoil Calculator for the planting cap. For a full project material plan, our Project Calculators hub links every site-work tool in one place.

Every number on this page is tied to a published standard or a verifiable industry dataset. The volume formula, depth recommendations, weight density, settling allowance, and 2026 cost ranges are all sourced below. Cost data is refreshed twice per year; formula and depth citations are stable across 2025–2026.

Marcus Johnson, CCMCCM

Reviews: project calculators · 31 calculators reviewed

Marcus Johnson is a Certified Construction Manager (CCM) with 20 years of experience in residential and commercial site work. He holds CCM certification from CMAA (member #2019-1247). He has managed NALP-member landscape installation projects covering more than 2 million square feet of site work. At CalcSummit, he writes all landscape volume and bulk-material calculators, applying field-tested coverage rates for mulch, gravel, sand, topsoil, and fill dirt.

Full profile →

Alex Rivera, PEPE

Reviews: volume calculators · 38 calculators reviewed

Full profile →

Published May 2026 · Last reviewed May 2026 · Next cost-data review September 2026. Page authored by Marcus Johnson, CCM (CMAA #2019-1247) and reviewed by Alex Rivera, PE (California PE #C-89412, Texas PE #P.E.-98765).

Scope note: this page provides estimating guidance for residential and light-commercial topsoil projects. For structural fill design, retaining-wall backfill, septic-field cover, or commercial site grading, a licensed civil engineer of record should produce the material specification and depth design.