Cubic Yards to Tons: Conversion Guide by Material
A ton is weight, a yard is volume — the material decides the bridge between them. Here's the density table, both formulas, and how suppliers actually bill.
By the Cubic Yard Calculator team · Last updated October 2026
The short answer
One ton of gravel is about 0.71 cubic yards. One ton of mulch is about 2.50 cubic yards. There is no universal conversion — density decides everything. The formulas: cubic yards = tons ÷ tons-per-yard, and tons = cubic yards × tons-per-yard. Keep the density table below bookmarked.
Why tons and yards are different things
A ton measures weight; a cubic yard measures volume. A yard of mulch is light and fluffy, a yard of concrete is a two-ton block — the “yard” is the same size, but the weight is wildly different. That's why a material selector is required for a useful conversion, and why guessing with one density for everything is the #1 mistake: a ton of mulch is 2.5 yards while a ton of rock is under half a yard.
The density table
Typical dry bulk densities — the same numbers that power the converter on this site. Actual material varies with moisture, compaction, and rock type, so use supplier figures for final orders.
| Material | Lbs per cubic yard | Tons per yard | Yards per ton |
|---|---|---|---|
| Concrete | 4,050 | 2.03 | 0.49 |
| Gravel | 2,800 | 1.40 | 0.71 |
| Fill dirt | 2,200 | 1.10 | 0.91 |
| Topsoil | 2,400 | 1.20 | 0.83 |
| Mulch | 800 | 0.40 | 2.50 |
| Sand | 2,700 | 1.35 | 0.74 |
Both formulas, with examples
Tons → yards: yards = tons ÷ density. Three tons of gravel at 1.4 tons/yard: 3 ÷ 1.4 = 2.14 cubic yards. Yards → tons: tons = yards × density. Five cubic yards of sand at 1.3 tons/yard: 5 × 1.3 = 6.5 tons. Equivalent form with pounds: yards = tons × 2,000 ÷ lbs-per-yard.
More quick hits: 2 tons of sand → 1.54 yards. 5 tons of gravel → 3.57 yards. 1 ton of topsoil → 0.91 yards. 3 tons of mulch → 6.0 yards. 10 tons of fill dirt → 8.0 yards. Notice how light mulch gives far more volume per ton than heavy rock — this is why suppliers price gravel by the ton but quote mulch by the yard.
How suppliers actually bill
Stone yards usually quote gravel, rock, and sand by the ton because truck scales make weight easy to verify. Landscape suppliers usually quote mulch and soil by the cubic yard because these products are loaded by bucket volume. Concrete is ordered by cubic yard because the form volume determines the order. When a quote arrives in the unit you don't plan in, convert first — then compare.
Truck limits: weight vs volume
A truck rated for 10 tons carries about 7 yards of gravel but 20 yards of mulch — volume and weight limits hit at different points. Gravel weight often hits the legal limit before the bed is full; mulch fills the bed before weight becomes an issue. Before hauling yourself, check your payload rating against the material weight: a “small” 3-yard gravel order is 4.2 tons.
Common mistakes
Using one density for everything. The material setting is the whole calculation. Forgetting moisture. Wet sand and soil weigh noticeably more, which shrinks the volume you get per ton. Ignoring truck weight limits. Volume fits, weight doesn't — check both. Mixing short tons and metric tons. Bulk work in the US uses 2,000-lb short tons; metric tonnes are 2,205 lbs.
Conversion FAQ
Straight answers, no fluff. Then run your own numbers above.
How do you convert cubic yards to tons?
Multiply cubic yards by the material's tons-per-yard density: tons = yards × density. For gravel at 1.4 tons/yard, 5 yards = 7 tons.
How do you convert tons to cubic yards?
Divide tons by the tons-per-yard density: yards = tons ÷ density. For gravel, 5 tons = 5 ÷ 1.4 = 3.57 yards.
Why does a ton of mulch cover so much more than a ton of gravel?
Density. Mulch weighs about 0.4 tons per yard, gravel about 1.4 — so a ton of mulch is 2.5 cubic yards while a ton of gravel is 0.71 yards. Same weight, very different volume.
Is a short ton 2,000 lbs?
Yes. Bulk material math in the US uses the short ton of 2,000 lbs.
Does wet material change the conversion?
Yes. Water adds weight without adding much volume, so wet sand, soil, or mulch gives fewer cubic yards per ton than dry material. Assume the heavy end after rain.
References
- All calculations use the site's published constants — see Data Sources (/data-sources/).
- Material densities: published bulk-material density tables cross-checked against supplier data (see /data-sources/).
Run your own numbers
Reading is good. Math is better. Punch your project into the free calculator and order with confidence.