Cubic Yards to Tons Converter

A cubic yards to tons converter turns a volume measurement into a weight measurement for a bulk material such as soil, gravel, sand, or concrete. Because materials have different densities, the same volume of two materials can weigh very different amounts. A cubic yard of mulch weighs about 1,000 pounds. A cubic yard of concrete weighs about 4,000 pounds.

This conversion matters in practice. Suppliers often sell material by volume but charge delivery by weight. Dump trucks have maximum load limits set by weight, not volume. A wrong estimate can mean an extra delivery trip or an overloaded truck.

How to Calculate Cubic Yards to Tons

The conversion depends on a material's density, meaning how much a cubic yard of it weighs. The formula is:

$\text{Weight (tons)} = \text{Volume (cubic yards)} \times \text{Material Density (tons per cubic yard)}$

To go the other direction, from a known weight to a volume:

$\text{Volume (cubic yards)} = \frac{\text{Weight (tons)}}{\text{Material Density (tons per cubic yard)}}$

Material Density Chart

What Changes a Material's Density

• Moisture. Wet material weighs more than dry material. Soil soaked by rain can weigh 20 to 30 percent more than dry soil from the same pile.
• Compaction. Loose gravel fresh off a delivery truck weighs less per cubic yard than the same gravel after it has been driven over and packed down. The difference can reach 10 to 15 percent.
• Particle size. Fine sand packs more tightly than coarse gravel, leaving less air space between grains. This is one reason concrete is denser than wood chips.
• Composition. Soil sold as "topsoil" varies by source. Clay-heavy soil weighs more than sandy soil.

For work where precision matters, such as commercial concrete or asphalt orders, a supplier can provide a density certificate for the specific batch.

Example Calculations

Soil: 10 cubic yards of soil (density 1.4) weighs 10 × 1.4 = 14 tons.

Concrete: 5 cubic yards of concrete (density 2.0) weighs 5 × 2.0 = 10 tons.

Reverse conversion, gravel: 15 tons of gravel (density 1.5) equals 15 ÷ 1.5 = 10 cubic yards.

Real-World Examples

Ready-mix concrete delivery. Concrete is ordered in cubic yards but delivered by weight, since that is how a truck scale measures the load. Five cubic yards of concrete weighs about 10 tons, or 20,000 pounds, before adding the weight of the truck itself. Dispatchers check this against road weight limits, typically 80,000 pounds total for a loaded tractor-trailer in the United States.

Excavation. A basement 30 feet by 40 feet by 8 feet deep has a volume of 30 × 40 × 8 = 9,600 cubic feet. Divided by 27 (the number of cubic feet in a cubic yard), that is about 356 cubic yards of soil. At a soil density of 1.4 tons per cubic yard, the excavated soil weighs about 498 tons. A standard dump truck carries 10 to 15 tons, so hauling the soil away takes roughly 34 to 50 truck trips.

Foundation gravel. A compacted gravel base is often specified at 6 inches deep, or 0.5 feet. For a 2,000-square-foot foundation, that is 2,000 × 0.5 = 1,000 cubic feet, or about 37 cubic yards. At a gravel density of 1.5, that gravel weighs about 56 tons. Ordering only 30 tons, thinking it is close enough, would leave the job more than 25 tons short.

Driveway gravel. A two-car gravel driveway 20 feet by 40 feet with 4 inches (0.33 feet) of compacted gravel needs 20 × 40 × 0.33 = about 267 cubic feet, or roughly 10 cubic yards. At a gravel density of 1.5, that is about 15 tons.

Raised garden beds. A bed 4 feet by 8 feet by 2 feet deep holds 64 cubic feet, or about 2.4 cubic yards of soil. At a soil density of 1.4, that is about 3.3 tons. Many suppliers set delivery minimums around 5 tons, so a single small bed order may not meet the minimum.

Dumpster rental. A 30-cubic-yard dumpster filled with mixed construction debris (concrete, wood, drywall), at a typical density of 1.3 to 1.6 tons per cubic yard, holds 39 to 48 tons. If a rental includes only 3 tons free and charges $80 per ton over that, the overage fee on a full load ranges from (39 − 3) ×$80 = $2,880 to (48 − 3) ×$80 = $3,600.

Other Units Used for the Same Purpose

Outside the United States, volume is usually measured in cubic meters (1 cubic yard equals about 0.765 cubic meters) and weight in metric tonnes (1 metric tonne equals 2,204.6 pounds, compared with 2,000 pounds for a US ton). Engineering drawings sometimes mix systems, so it is worth checking which unit a document specifies before ordering material.

Material volume is also described as bank, loose, or compacted. Bank measures material still in the ground. Loose measures it after excavation, when it typically takes up about 30 percent more space. Compacted measures it after it has been placed and packed down, typically about 10 percent more than bank volume. Ten bank cubic yards might become 13 loose cubic yards when hauled, then settle to about 11 compacted cubic yards once placed.

Frequently Asked Questions

How do I convert cubic yards to tons? Multiply the volume in cubic yards by the material's density in tons per cubic yard. For soil at 1.4 tons per cubic yard, 10 cubic yards weighs 10 × 1.4 = 14 tons.

How many tons is a cubic yard of gravel? About 1.5 tons (3,000 pounds), for standard crushed stone or river rock at typical moisture levels. Wet gravel can weigh 10 to 15 percent more.

How many cubic yards are in a ton of dirt? About 0.71 cubic yards, using a general soil density of 1.4 tons per cubic yard (1 ÷ 1.4 = 0.71). Clay-heavy soil, which is denser, converts to about 0.9 cubic yards per ton. Sandy soil, which is lighter, converts to about 0.77 cubic yards per ton.

How much does a cubic yard of concrete weigh? About 2 tons (4,000 pounds) for standard concrete. Lightweight concrete mixes weigh 1.5 to 1.7 tons per cubic yard, while heavyweight mixes with iron aggregate can exceed 2.5 tons per cubic yard.

How many cubic yards fit in a dump truck? A standard tandem-axle dump truck holds about 10 to 14 cubic yards, but its legal weight limit, usually 10 to 15 tons, often matters more than the volume. Fourteen cubic yards of concrete would weigh about 28 tons, far above what most trucks can legally carry.

What is the difference between a ton and a metric tonne? A US ton is 2,000 pounds. A metric tonne is 2,204.6 pounds (1,000 kilograms). The difference is about 10 percent, which adds up on large orders, so it is worth confirming which unit a supplier or engineering spec uses.

Limitations

The density values above are standard estimates, not measurements of a specific material batch. Actual density depends on moisture, compaction, and composition, and can vary by 10 to 25 percent from the table values. For structural foundations, load-bearing work, or projects with strict specifications, a certified density test from an accredited laboratory (for example, under ASTM D1556 for soil or ASTM C138 for concrete) gives a reliable figure. For everyday planning and ordering, the standard density values are accurate enough.