20 Cubic Yards of River Rock in Tons
20 cubic yards of river rock in tons works out to about 27.0 tons using a planning weight of 1.35 tons per yard. Real loads land between roughly 25.0 and 29.0 tons depending on stone size, fines and moisture. That is about 54,000 pounds.
Volume and tonnage calculator →The conversion
- Yards × tons per yard: 20 × 1.35 = 27.0 tons.
- Low end: 20 × 1.25 = 25.0 tons.
- High end: 20 × 1.45 = 29.0 tons.
Quarries can tell you the weight per yard for their own product; use it if you have it.
What 20 yards covers
| Depth | Square feet |
|---|---|
| 2 in | 3,240 |
| 3 in | 2,160 |
| 4 in | 1,620 |
About river rock
River rock is mostly decorative and for drainage beds. It is not meant to be driven on and tends to roll if used as a walking surface.
Hauling 20 yards
Plan the delivery around 27.0 tons: two or more trucks in most areas. A pickup is a poor fit for anything past a fraction of a yard; see how much gravel a half-ton pickup can carry.
Before you order
- Confirm whether the yard prices river rock by the ton or by the yard.
- Add about 10 percent for compaction and uneven ground.
- Clear a firm spot for the truck to dump.
The volume and tonnage calculator converts any area and depth into yards and tons.
Where river rock fits
Best suited to:
- Dry creek beds and drainage swales
- Decorative borders and planting beds
- Around downspouts to stop splash erosion
Think twice for:
- Walking surfaces
- Driveways
- Bases under slabs or pavers
Quick reference numbers
- Per inch over 100 sq ft: about 0.42 tons of river rock (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.2 tons.
- Another size for comparison: a 15x30 area at 3 inches takes about 5.6 tons.
- Weight used here: about 1.35 tons per cubic yard.
Where estimates go wrong
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Questions people ask
How many tons is 20 yards of river rock?
About 27.0 tons, with a typical range of 25.0 to 29.0.
How many pounds is 20 cubic yards of river rock?
About 54,000 pounds.
How much area does 20 yards of river rock cover at 3 inches?
About 2,160 square feet.
Why does river rock weight vary?
Stone size, the share of fines and moisture all change how much a yard weighs.
Is it better to buy by the ton or the yard?
Either works; just convert with the supplier’s own weight per yard so the two quotes compare fairly.
Related guides
- How Much Does a Ton of River Rock Cover?
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Yard of Crushed Stone Weigh?
- 18 Cubic Yards of River Rock in Tons
- 19 Cubic Yards of River Rock in Tons
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