Soil Weight Calculator: Convert Cubic Yards of Topsoil to Tons

Why Soil Weight Varies

Every figure on this page is a published bulk density, a standard, repeatable number used for planning and comparison, rather than a lab measurement of the exact load that will show up at your address. That distinction matters because real soil weight moves around more than a single number can capture, and knowing why keeps a delivered load's actual weight from feeling like a discrepancy when it lands a bit above or below the figure this calculator returned.

The same cubic yard of "topsoil" can weigh noticeably different amounts from one delivery to the next, and the reason is almost always one of three variables rather than a mistake in measurement. Moisture is the biggest swing: a load that sat under open sky through a week of rain can weigh 20 to 30 percent more than the identical dry material, purely from the water it's holding, without a single grain of the mineral content having changed. A supplier's stockpile covered against rain and one left exposed can differ in weight by a meaningful margin even when both were scooped from the same source pile the same week.

Compaction is the second variable. Loose, freshly turned soil has more air pockets between particles than the same soil after it's been driven over, walked on or simply left to settle under its own weight for a season, and every one of those air pockets is volume that isn't carrying any weight at all. A cubic yard measured loose and the same material measured after compacting are not really the same cubic yard anymore, even though both are called by the same name.

Organic content and particle composition make up the third variable, and it's the one that's consistent for a given material rather than changing with weather or handling. Compost is lighter than topsoil because organic matter is inherently less dense than mineral soil; clay-heavy soil is denser than sandy soil because clay particles pack together more tightly than the larger, more angular grains of sand. This is why the calculator asks for a material selection at all. The formula behind every result is volume multiplied by that material's own published density, and picking the wrong material silently produces a wrong weight even when the volume was measured correctly.

How Bulk Delivery Is Priced

Suppliers quote bulk soil one of two ways, and which one you're dealing with changes what this calculator is for. Volume pricing, in dollars per cubic yard, is the more common method for topsoil, compost and other garden-grade materials, because the customer's need is naturally expressed in volume: a bed of a certain size needs a certain number of cubic yards, regardless of exactly how heavy that material turns out to be.

Weight pricing, in dollars per ton, is more common for fill dirt, gravel and other materials sold mainly for construction and grading, industries that are used to buying and hauling by the ton across every material they use, not just soil. It's also the method almost every supplier switches to for billing a truck at the scale on the way out, even if the original quote was given per yard, since a scale ticket is a harder number to dispute than an estimated volume.

The two methods can disagree even when both sides are being honest, and it usually comes down to which density figure each side is using. A supplier pricing by weight might use a slightly wetter or more compacted density than the standard bulk figure this calculator uses, which changes the tonnage for an identical pile of material without either side having made an error. Asking a supplier which density figure their weight quote assumes, and comparing it against the reference table below, is the fastest way to spot that kind of mismatch before it becomes a dispute over a scale ticket.

This calculator exists for the moment those two pricing methods meet: when you know a job's volume because you calculated it from measurements, but the supplier in front of you is quoting by weight. Converting once, before the order is placed, is the only way to compare that quote against a volume-based quote from a different supplier on equal terms, and it's worth doing before the truck is booked rather than after a scale ticket has already been issued.

Full Density Reference

Every unit this site uses for material weight, side by side. Pounds per cubic foot suits a quick sanity check against a single bag's label; pounds and tons per cubic yard are the figures a North American bulk supplier will quote against; kilograms per cubic metre is the figure to use anywhere the metric system is standard for construction and landscaping deliveries.

Cubic Yards to Tons Conversion Grid

A quick-reference grid for the volumes soil orders most commonly land on, across all five materials. Because weight scales in a straight line with volume for a fixed material and density, doubling any row's cubic yard figure simply doubles every weight in that row. The grid stops at 20 cubic yards only because very few residential deliveries go larger, not because the relationship breaks down past that point.

For a volume that doesn't land neatly on one of these rows, or for a material this table doesn't cover directly, the calculator above returns the exact figure rather than the nearest approximation. For the volume calculation itself, working out cubic yards from a bed or lawn's measurements in the first place, the topsoil volume calculator on the homepage is the starting point this page picks up from.

Reading a Supplier's Scale Ticket

A scale ticket usually reports gross weight (truck plus load), tare weight (empty truck) and net weight (the load alone) as three separate figures, with net weight being the only one that matters for checking an order. Divide the net weight in pounds by the material's lb/yd³ figure from the table above to back-calculate the delivered volume, and compare that against what was ordered. A meaningful shortfall is worth raising with the supplier before the truck leaves, since it's far harder to dispute after the material has already been spread.

Frequently Asked Questions