Gravel Calculator
Driveway & Path Volume Estimation
Gravel Needed
Note: Weight assumes a typical gravel density of about 2,800 lbs (1.4 tons) per cubic yard — actual density varies by material type and moisture content.
Ready for Calculation
Enter your project dimensions and depth to estimate gravel needed.
Planning a Gravel Project
Gravel is typically sold by weight (tons) rather than volume, since suppliers work directly from truck scales. Converting your project's volume to an estimated weight lets you get an accurate quote and avoid running short mid-project.
Typical Driveway Depth
A standard gravel driveway base uses 4-6 inches (10-15 cm) of compacted material, sometimes with a separate drainage layer beneath it for heavier vehicle traffic.
Density Varies by Type
Crushed stone, pea gravel, and river rock all pack to slightly different densities — this calculator uses a common average of about 1.4 tons per cubic yard.
Compaction Reduces Volume
Loose gravel compacts by roughly 10-20% once driven or walked on repeatedly. For load-bearing surfaces like driveways, ordering a bit extra accounts for this settling.
Bulk Delivery Standard
Most gravel suppliers sell by the ton with a minimum delivery amount — check local minimums before finalizing your order.
Key Takeaways
- Order 10% Extra: Irregular ground and compaction settling both eat into your usable coverage — a small buffer avoids a second delivery trip.
- Confirm Density With Your Supplier: Ask your specific supplier for their material's density if you need a precise weight estimate.
- Layer for Drainage: Larger crushed stone as a base layer beneath finer gravel improves drainage and long-term stability.