Gravel Calculator
Calculate how much gravel, crushed stone, or aggregate you need by volume and weight.
A gravel calculator estimates the cubic yards and tonnage of gravel, crushed stone, or other aggregate needed for driveways, paths, and landscaping projects.
Examples
20x10 ft driveway, 4 inches deep
Frequently Asked Questions
How deep should gravel be for a driveway?
How do I order gravel?
Quick Tips
- •Always round up when ordering materials -- running short is more expensive than having extra.
- •Order by the ton rather than by the cubic yard for more accurate pricing, since gravel is sold by weight.
- •Install landscape fabric beneath gravel to prevent it from sinking into the soil over time.
A gravel calculator estimates the cubic yards and tonnage of gravel, crushed stone, or other aggregate needed for driveways, paths, and landscaping projects.
How to Use This Calculator
Enter the area dimensions in feet, desired depth in inches, and select the material type. The calculator determines cubic yards needed and the approximate weight in tons for ordering.
Understanding the Formula
Volume = Length x Width x (Depth/12) cu ft. Cubic Yards = Volume / 27. Tons = Volume x Density / 2000.
Examples
20x10 ft driveway, 4 inches deep
Volume: 20 x 10 x 0.333 = 66.7 cu ft = 2.47 cu yd. Weight: approx 3.35 tons of gravel.
Frequently Asked Questions
How deep should gravel be for a driveway?
Gravel driveways typically need 4-6 inches of gravel. A proper installation uses a 4-inch base layer of larger crushed stone topped with 2 inches of smaller gravel. Walkways need only 2-3 inches.
How do I order gravel?
Gravel is typically sold by the ton or cubic yard. One cubic yard of gravel weighs approximately 1.35 tons (2,700 lbs). Most suppliers deliver by the truckload, with a typical dump truck holding 10-15 tons.
Assumptions & Limitations
- Assumes standard material densities; actual weights vary by product.
- Add 5-10% extra material for waste and cuts.
- Depth is assumed uniform across the area; sloped or uneven ground may require additional material.