🟫 Topsoil Calculator

What This Calculator Does

This calculator sizes a topsoil order. Enter the area to cover and the depth to fill, and it returns the volume in cubic feet and cubic yards — the unit soil sells by — plus the approximate weight in tons, which governs delivery and hauling. Beds, new lawns, low-spot leveling, and topdressing all reduce to this same area-times-depth arithmetic.

Soil looks cheap per yard until the project needs twelve of them, and it is heavy enough that mistakes cannot be shoveled back onto the truck. Measuring the area honestly and choosing the depth deliberately — the two inputs here — is the entire estimating skill.

Volume, Weight, and the Order

The volume math matches every fill material on this site: area × (depth ÷ 12) for cubic feet, ÷ 27 for cubic yards. A 100 sq ft bed at 6 inches is 50 cubic feet — 1.85 yards; a 1,000 sq ft lawn area getting 3 inches of new soil is 250 cubic feet — 9.26 yards, which is genuinely a lot of soil. Weight follows at roughly 1.0-1.3 tons per yard depending on moisture (wet soil is dramatically heavier), making that lawn project on the order of ten tons — dump-truck territory, not trips in a sedan.

The weight figure earns its place in the calculator because it drives logistics: a half-ton pickup honestly carries about half a yard of damp soil; delivery trucks need a drop spot that can take several tons on a small footprint (lawns rut, driveways survive); and moving a yard by wheelbarrow is roughly nine heaped trips. Ordering slightly over — 5-10% — covers settling, which soil does substantially in its first weeks, especially in filled holes and raised beds.

Choosing Depth by Project

Depth is where topsoil projects differ. Establishing a new lawn from bare grade wants 4-6 inches of decent soil for roots to develop — the single biggest determinant of how the lawn performs for decades, and the corner most often cut by builders. Garden beds run deeper, 6-12 inches depending on what grows there (roots vegetables want the full foot). Leveling low spots uses whatever the hollow needs, added in lifts of an inch or two so grass survives through it. Topdressing — the lawn-improvement habit of spreading a thin layer over existing turf — uses just 1/4 to 1/2 inch, which is why a modest 1-yard delivery topdresses a surprisingly large lawn (a yard covers 650 sq ft at half an inch).

Because volume scales linearly with depth, the depth decision is the budget decision: the same 500 sq ft area needs 1.5 yards at one inch and 9.3 at six. Running the calculator at the honest depth for the project — rather than a hopeful shallow number — is what prevents the classic outcome of a bed filled two-thirds full when the truck pulls away.

Topsoil Quality and the Alternatives

“Topsoil” has no legal grade, so quality varies from screened loam to whatever a construction site scraped. Buying signals worth using: screened topsoil has passed through a mesh removing rocks and debris (worth the premium for beds and lawns); a supplier who states the source and lets you inspect the pile beats a mystery load; and dark, crumbly texture that holds a loose ball when squeezed beats pale, cloddy subsoil. For planting beds, blended garden soil (topsoil plus compost) or a self-mixed 70/30 topsoil-compost combination outperforms straight fill soil; for pure grading and volume, plain screened topsoil is the economical right answer.

Bags versus bulk follows the usual crossover: bagged topsoil (typically 0.75-1 cu ft, so ~30+ bags per yard) suits patch jobs and carrying through gates; bulk delivery wins decisively past half a yard on price and effort. If the project involves both structure and planting — a raised bed, say — the economical layering is cheaper fill or plain topsoil in the lower half and the good blended soil where roots actually live. The calculator gives the total volume; splitting it across materials is where a little planning saves real money.

Quick Tips

• Yards = area × (depth ÷ 12) ÷ 27; a yard weighs ~1.0-1.3 tons.
• New lawns: 4-6″ of soil. Beds: 6-12″. Topdressing: just 1/4-1/2″.
• Order 5-10% extra — soil settles noticeably in its first weeks.
• Buy screened soil for beds and lawns; inspect the pile before delivery.

Frequently Asked Questions

How much topsoil do I need?

Area (sq ft) x depth in feet (inches ÷ 12) gives cubic feet; divide by 27 for cubic yards. A 1,000 sq ft lawn topdressed 1 inch deep needs about 3.1 cubic yards; a 100 sq ft bed filled 6 inches needs 1.85.

How much does a yard of topsoil weigh?

Roughly 1.0-1.3 tons depending on moisture and composition — call it about 2,200 lbs for planning. That is why topsoil arrives by dump truck and why a pickup hauls half a yard safely, not three.

How deep should topsoil be?

New lawns want 4-6 inches of quality topsoil; garden beds 6-12; topdressing an existing lawn uses just 1/4 to 1/2 inch so grass grows through. Depth is the biggest lever on the order size.

Topsoil, garden soil, or compost — which do I need?

Topsoil is graded natural soil for volume and grading; garden soil is topsoil blended with organic matter for planting beds; compost is pure organic amendment mixed into either. Filling and leveling wants topsoil; beds want the blend or a topsoil+compost mix.

Grounded Estimates, Free to Use

This calculator runs entirely in your browser, converting area and depth to yards and tons the moment you type. It needs no account or download and works on any device. Like every tool here, it is free to use as often as you like.

Related Tools

For neighboring projects, the mulch calculator tops the finished beds, the grass seed calculator seeds the new soil, and the gravel calculator handles the drainage layers.