Gravel Calculator
Enter the area you're covering and the depth of gravel to get the volume in cubic yards, the weight in tons (how aggregate is usually sold and delivered), and an estimated cost.
Common sizes
Jump to a pre-filled estimate:
How it works
Volume = length × width × depth. We convert to cubic yards, then to tons using a typical gravel density of about 1.4 tons per cubic yard, and multiply by your price per ton.
The formula
Cubic yards = (Length × Width × Depth in ÷ 12) ÷ 27. Tons ≈ cubic yards × 1.4. Cost = tons × price per ton.
Worked examples
| Example | Result |
|---|---|
| 40×10 driveway at 4" | A single-lane gravel driveway: about 4.9 cubic yards / 6.9 tons. |
| 3×20 path at 3" | A garden path needs surprisingly little — under a ton. |
Frequently asked questions
How many tons of gravel in a cubic yard?
Most gravel weighs about 1.4 tons per cubic yard when dry. Wet or dense aggregate can reach 1.5 tons; lightweight pea gravel a little less.
How deep should a gravel driveway be?
Plan for 4 inches of gravel for foot traffic, and 6–8 inches (often in two layers) for a driveway that carries vehicles, over a compacted base.
How much does a ton of gravel cost?
Bulk gravel typically runs $30–$60 per ton delivered depending on stone type and haul distance. This tool uses your local price for the estimate.
Related tools
Method reviewed by The editorial team. See our methodology for sources and assumptions.