How much does a yard of river rock weigh?
A cubic yard of river rock weighs about 2,650 lb (1.32 tons) (Pro Green Services). One ton of river rock is about 0.75 cubic yards.
0 uses the published 2,650 lb/yd³
Optional; 0 leaves cost out
1 ton of river rock is about 0.75 cubic yards at 2,650 lb per cubic yard.
- Cubic yards
- 0.75
- Cubic feet
- 20.4
- Tons
- 1
- Pounds
- 2,000
- Cubic yards at the published range, same condition
- 0.74–0.82
- Rounded up to the next half yard
- 1 yd³
How it is calculated
- Pounds = 1 ton × 2,000 lb = 2,000 lb.
- Cubic yards = 2,000 lb ÷ 2,650 lb/yd³ = 0.75 yd³.
- Cubic feet = 0.75 yd³ × 27 = 20.4 cu ft.
Published weight of a cubic yard of river rock
| Publisher | Category and condition in the document | Value as printed | Pounds per cubic yard |
|---|---|---|---|
| U.S. Environmental Protection Agency | “Pebbles | 1 cubic foot | 90-100 | FEECO” Condition: not stated | 90–100 lb/ft³ | 2,430–2,700 |
| Pro Green Services (used by the calculators) | “River Rock (all) = 1.325 tons (2650 lbs.) per cubic yard” Condition: not stated | 1.325 ton/yd³ | 2,650 |
River rock weight by volume
At 2,650 lb per cubic yard, 5 cubic yards of river rock weigh about 13,250 lb (6.63 tons) and 10 cubic yards about 13.25 tons.
| Volume | Pounds | Tons | Tons, published range, same condition |
|---|---|---|---|
| 1 cubic foot | 98 | 0.049 | 0.045–0.05 |
| 0.5 cubic yards | 1,325 | 0.66 | 0.61–0.68 |
| 1 cubic yard | 2,650 | 1.33 | 1.22–1.35 |
| 2 cubic yards | 5,300 | 2.65 | 2.43–2.7 |
| 3 cubic yards | 7,950 | 3.98 | 3.65–4.05 |
| 5 cubic yards | 13,250 | 6.63 | 6.08–6.75 |
| 10 cubic yards | 26,500 | 13.25 | 12.15–13.5 |
| 15 cubic yards | 39,750 | 19.88 | 18.23–20.25 |
| 20 cubic yards | 53,000 | 26.5 | 24.3–27 |
How many yards in a ton of river rock?
One ton of river rock is about 0.75 cubic yards at 2,650 lb per cubic yard, and 0.74–0.82 cubic yards across the published values in the same condition. Five tons is about 3.77 cubic yards.
| Tons | Cubic yards | Cubic yards, published range |
|---|---|---|
| 1 | 0.75 | 0.74–0.82 |
| 2 | 1.51 | 1.48–1.65 |
| 3 | 2.26 | 2.22–2.47 |
| 4 | 3.02 | 2.96–3.29 |
| 5 | 3.77 | 3.7–4.12 |
| 6 | 4.53 | 4.44–4.94 |
| 7 | 5.28 | 5.19–5.76 |
| 8 | 6.04 | 5.93–6.58 |
| 9 | 6.79 | 6.67–7.41 |
| 10 | 7.55 | 7.41–8.23 |
| 15 | 11.32 | 11.11–12.35 |
| 20 | 15.09 | 14.81–16.46 |
| 25 | 18.87 | 18.52–20.58 |
Why the weight of river rock differs between sources
The published values for river rock range from 2,430 to 2,700 lb per cubic yard across 2 values from 2 documents. A cubic yard weighs more when the material is wet than when it is dry, and more when it is compacted than when it is loose. Stone from different quarries also differs in density and in the share of fines between the larger pieces.
For an order, ask the supplier for the weight per cubic yard of the material they deliver, and use it as your own density in the converter.