Calculate your stone project precisely.
Gravel is sold by the ton but measured in yards. Our calculator does both conversions instantly — so you order exactly the right amount from your quarry.
Enter Project Dimensions
Project Diagram
Total Volume
Enter dimensions above
Estimated Weight
Based on Gravel & River Rock density (1.4 t/yd³)
Recommended Depths for Gravel & River Rock
| Project / Use Case | Recommended Depth |
|---|---|
| Driveway Base Layer | 4–6 inches |
| Driveway Top Layer | 2–3 inches |
| Walkway / Path | 2–3 inches |
| French Drain / Drainage | 12+ inches |
How to Calculate Gravel & River Rock Volume
Most landscaping suppliers sell gravel & river rock by the cubic yard. To convert your project area to cubic yards, use this formula:
Our calculator also multiplies your cubic yard result by 1.4 tons/yd³ (the standard density for gravel & river rock) to show estimated weight — essential if you are hauling the material yourself or need delivery pricing.
Pro Tips for Gravel & River Rock Projects
For driveways, use angular crushed stone (not round river rock) — the jagged edges lock together and resist shifting under vehicle weight.
Compact each 3-inch lift of gravel with a plate compactor before adding more layers.
Use landscape fabric under decorative gravel to block weeds and prevent the stone from sinking into the soil over time.