Gravel Calculator
Calculate how much gravel you need in cubic feet, cubic yards, and tons. Estimate waste and material cost for driveways, landscaping, and other projects.
Gravel Calculator
How to Calculate Gravel
Gravel quantity is usually calculated from the project area and the average depth of the gravel layer. The result can then be converted from cubic feet to cubic yards and estimated tons.
Length × Width
Area × Depth in feet
Cubic feet ÷ 27
Base volume × (1 + Waste ÷ 100)
Gravel weight varies by material, moisture, density, and supplier. This calculator uses an approximate planning conversion of 1.4 tons per cubic yard.
Gravel Tools
Driveway Gravel Calculator
Estimate gravel needed for a driveway based on its length, width, and depth.
Pea Gravel Calculator
Estimate the volume and approximate tons of pea gravel required for landscaping projects.
Gravel Cost Calculator
Estimate material cost by entering your gravel price per ton.
How Much Gravel Do I Need?
To estimate gravel, measure the length and width of the area and determine the average depth you want to install. Convert the depth from inches to feet before calculating the volume.
For example, a 50 ft × 12 ft area with a 4-inch gravel depth has an area of 600 square feet. A 4-inch depth is one-third of a foot, so the base volume is approximately 200 cubic feet, or about 7.41 cubic yards.
Adding a waste allowance can help account for uneven surfaces, compaction, handling, and small measurement differences.
Gravel Calculator FAQ
How many cubic yards of gravel do I need?
Multiply the project length by width and depth in feet to get cubic feet, then divide by 27 to convert cubic feet to cubic yards.
How deep should gravel be?
Recommended depth depends on the project. Driveways, walkways, drainage areas, and landscaping beds may require different depths. Check local construction guidance and supplier recommendations.
How many tons are in a cubic yard of gravel?
Gravel density varies. This calculator uses approximately 1.4 tons per cubic yard as a planning estimate. Your supplier's stated weight should be used for purchasing decisions.
Should I add waste when ordering gravel?
A waste allowance can help account for uneven ground, compaction, handling, and measurement differences. The appropriate allowance depends on the project.
Does this calculator work for pea gravel?
Yes. The volume calculation works for different gravel types, but the estimated weight can vary because different materials have different densities.
Calculator Limitations
This calculator provides estimates for planning purposes only. Actual gravel requirements and weight can vary because of material density, moisture, compaction, irregular ground conditions, and supplier specifications.
Always confirm quantities and material specifications with your local gravel supplier before placing an order.