Gravel Driveway Calculator
Gravel volume, weight and material cost from driveway dimensions.
Project inputs
Examples
Editable planning assumption. Ask your supplier for the density of the selected aggregate. One US short ton = 2,000 lb.
Supplier prices (optional)
Prices exclude delivery, tax and labor. Currency changes labels only.
Estimate
Start with your measurements.
Your order quantity, purchasing options and material cost appear here.
Overage is included in purchasing quantities. Check product yields before ordering.
Check product yields and project specifications. Material subtotals exclude delivery, tax, labor and equipment. These quantities do not specify structural dimensions or reinforcement.
Estimate
Worked example
Here is a step-by-step walkthrough for a standard single-car driveway: 50 feet long, 10 feet wide, 4 inches deep with crushed limestone.
- Step 1; Area 50 × 10 = 500 sq ft
- Step 2; Volume 500 × (4 ÷ 12) = 166.67 cu ft
- Step 3; Add 10% Waste 166.67 × 1.10 = 183.33 cu ft
- Step 4; Cubic Yards 183.33 ÷ 27 = 6.79 cu yd
- Step 5; Tons 6.79 × 1.40 = 9.51 tons
- Step 6; Cost (at $28/ton) $266 in materials (before delivery)
Calculation method
The calculator multiplies your driveway length × width × depth to get the total volume in cubic feet, then converts to cubic yards. A waste factor (typically 10%) is added to account for spreading variation and low spots.
Weight in tons is calculated by multiplying cubic yards by the density of your chosen gravel type. Crushed stone weighs around 1.40 tons/yd³; pea gravel is slightly lighter at 1.35 t/yd³; compacted road base is heavier at 1.50 t/yd³.
Supplier quote: Confirm whether pricing is per US short ton or cubic yard, and ask for delivery charges.
Project notes
- Plan each layer separately. Layer materials and depths depend on site conditions and the project specification.
- Install edging or borders. Gravel migrates outward without edging. Steel, plastic, or timber borders keep the gravel in place and reduce the amount you need to replace annually.
- Compact each layer. A plate compactor (rentable at most equipment shops) compresses gravel for better load bearing and reduces ruts over time. Never skip this step for driveways with vehicle traffic.
- Crown the center slightly. A slight rise down the center of the driveway (1–2 inches higher than the edges) channels water to the sides and reduces erosion.
- Add geotextile fabric at the base. A layer of landscape fabric over native soil before laying the base rock prevents the gravel from sinking into soft ground over time; especially important in clay soils.
- Top up annually. Gravel naturally migrates and compacts over time. Plan to add a thin top layer every 1–2 years to maintain depth and appearance.
Input and ordering checks
Using the wrong gravel type. Pea gravel looks attractive but rolls underfoot and under tires; it's poor for driveways. Crushed angular stone locks together when compacted; round smooth stones do not. Use crusher run, crushed limestone, or quarry process for functional driveways.
Using an unspecified depth. Confirm layer depths and compaction requirements for your soil and vehicle loads. Calculate each specified layer separately.
Skipping compaction. Loose uncompacted gravel creates ruts, sinks unevenly, and requires frequent regrading. Rent a plate compactor for every layer; it takes an hour and saves years of maintenance.
Forgetting delivery terms. Ask about minimum quantities, order increments and truck access before comparing material prices.
Assumptions
- ◦Density values: Crushed stone 1.40 t/yd³, pea gravel 1.35 t/yd³, road base 1.50 t/yd³, river rock 1.30 t/yd³. These are planning assumptions, not measured supplier densities; actual density varies by stone type and moisture content.
- ◦Waste factor: Default 10% covers spreading variation and low spots. Increase to 15% for irregular shapes or existing ruts.
- ◦Depth in inches: Imperial depth uses inches; metric depth uses centimeters. Both convert to feet internally for the yard and US short ton estimates.
- ◦Prices vary significantly: Gravel prices depend heavily on region, supplier, and delivery distance. The cost estimate is a material-only figure before delivery fees.
- ◦Results are estimates: Confirm quantities with your local supplier; they can advise on local stone density and delivery minimums.