Driveway gravel estimates
Estimate aggregate for a new driveway layer or a measured resurfacing area.
Gravel Calculator
Estimate gravel volume and weight for a driveway, path, drainage layer, or landscape area using measured dimensions and an editable density.
Material Calculator
Advanced material settings
Current default density: 105 lb/ft³ · editable in Advanced settings.
Enter the project dimensions to see the material estimate
The default density is 105 lb/ft³. Stone size, moisture, and compaction can change actual weight.
What Is Gravel Calculator?
A gravel calculator estimates the volume of aggregate needed to cover an area at a specified depth. It also converts volume to weight for projects where crushed stone, pea gravel, road base, or landscape gravel is sold by the ton.
The calculator starts with a default bulk density of 105 lb/ft³. Aggregate size, gradation, moisture, void space, and compaction can change the real density, so use a supplier value when available.
How to Use Gravel Calculator
1
Measure the Gravel Area
Select Rectangle or Circle and enter the project dimensions in feet.
2
Enter the Gravel Depth
Enter the desired loose or compacted depth in inches and keep that basis consistent with supplier guidance.
3
Adjust Density and Waste
Replace the default 105 lb/ft³ density when a supplier provides a value for the selected gravel.
4
Review the Live Quantity
The cubic yards, tons, pounds, and optional material cost update automatically.
How the Gravel Calculator Works
The calculator multiplies area by depth, then adds the selected waste allowance to produce adjusted order volume.
It multiplies adjusted cubic feet by bulk density and divides pounds by 2,000 to estimate U.S. short tons.
Gravel tons = Area (ft²) × Depth (ft) × (1 + Waste %) × Density (lb/ft³) ÷ 2,000
Example
A 40 ft by 10 ft driveway layer at 4 inches deep has 133.33 ft³ of raw volume. With 10% waste and 105 lb/ft³ density, the estimate is 5.43 yd³ or 7.70 tons.
Gravel Calculator Features
- Calculates rectangular and circular gravel areas
- Reports cubic feet, cubic yards, cubic meters, pounds, and tons
- Includes an adjustable waste allowance
- Allows bulk density to match the selected aggregate
- Estimates material cost from an optional price per ton
Common Use Cases
Paths and landscape beds
Calculate decorative gravel or pea gravel for walkways, borders, and planted areas.
Drainage and base layers
Prepare an initial quantity for drainage stone or compacted base before checking project specifications.
Limits and Important Notes
- Compacted base quantities can differ from loose delivered volume and may require a project-specific compaction factor.
- Aggregate type, size distribution, moisture, and supplier loading methods affect bulk density.
- Geotextile, excavation, edging, delivery, labor, equipment, and supplier minimums are not included.
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