Gravel Calculator
Calculate exactly how much gravel, stone, or topsoil you need for driveways, paths, and landscaping.
You need approximately
Estimated Weight
0.00Tons (US)
Metric Volume
0.00Cubic Meters
Full Project Summary
*Estimates based on standard density. Always verify with your supplier for exact material specifications.
How to Use
A gravel calculator estimates the amount of gravel needed by multiplying length, width, and depth to find volume. Convert the volume to cubic yards by dividing cubic feet by 27. One cubic yard covers 100 square feet at 3 inches deep, which helps plan accurate material quantities. Learn more about material densities
Select Shape & Dimensions
Choose between a rectangular area (driveways, paths) or a circular area (fire pits, gardens). Enter the length, width, or diameter in your preferred units.
Set Coverage Depth
Input how deep you want the gravel to be. For a standard pathway, 2-3 inches is typical; for a heavy-duty driveway, 4-6 inches may be required.
Adjust Density
Most gravel averages around 2,800 to 3,000 lbs per cubic yard. If your supplier provides a specific density, you can adjust this value for a more accurate weight estimate.
Coverage Reference Guide
Approximate square footage covered by 1 cubic yard of material at various depths:
| Depth (Inches) | Coverage (Sq. Ft.) |
|---|---|
| 1 inch | 324 sq ft |
| 2 inches | 162 sq ft |
| 3 inches | 108 sq ft |
| 4 inches | 81 sq ft |
| 6 inches | 54 sq ft |
Real Example Use Cases
Residential Driveway Upgrade
For a standard 20ft x 10ft driveway project needing a 4-inch deep base of crushed stone, enter 20 in length, 10 in width, and 4 in depth. The calculator will show you need about 2.5 cubic yards (~3.5 tons) to ensure a stable surface for vehicles.
Decorative Garden Pathway
Planning a winding pathway that measures 50ft long and 3ft wide? Using a 2-inch coverage depth for decorative aggregate, you'll find you need approximately 1 cubic yard. This estimate helps you order the exact material weight from local suppliers.
Circular Fire Pit Area
Switch to 'Circular Area' for a 12ft diameter fire pit zone in your yard. At a 3-inch depth for drainage stone, the tool identifies you need roughly 1.05 cubic yards. Knowing this volume ensures your project base is structurally sound.
Aggregate Industry Statistics
2.5 Billion
Tons of aggregate produced annually in the United States alone.
$30 Billion+
Contribution to the U.S. economy from the sand, gravel, and stone industry.
90%
Of aggregate materials are used within 50 miles of their production site.
10 Tons
Of aggregate required annually for every person in the U.S. for infrastructure.
Frequently asked questions (FAQ)
How much gravel do I need for a standard driveway project?
For a typical 1-car driveway (10' width by 20' length) at a 4-inch depth, the calculator provides an estimate of about 2.5 cubic yards (roughly 3.5 tons). Since coverage can vary based on subgrade levels, adding a 10% buffer to your aggregate order is recommended for a successful project.
What is the difference between a cubic yard and a ton in this calculator?
A cubic yard is a measurement of volume (the space the stone takes up in your yard), whereas a ton is a measurement of physical weight. Our calculator helps bridge this gap because different materials have unique densities; 1 cubic yard of stone generally weighs between 1.4 and 1.6 tons.
What is the ideal coverage depth for my pathway or patio base?
For a pathway or garden border, a depth of 2 to 3 inches provides excellent coverage. However, for a patio base or driveway, you should increase the material depth to 4 or 6 inches to support the weight and prevent the stone from shifting.
Should I account for compaction when using a gravel calculator?
Yes. Loose aggregate or stone settles and compacts once it is spread. For a structural base project, you might need up to 20% more volume than the initial calculator estimate to achieve the desired finished depth after the material is packed down.
What type of aggregate is best for a residential driveway?
Crushed stone (specifically #57 or "3/4-inch minus") is generally considered the best material for a driveway project. Unlike smooth river rocks, crushed aggregate has angular edges that lock together, creating a stable base that won't shift under vehicle weight.
How do I estimate volume for an irregular yard or curved pathway?
To find the volume for a curved pathway, measure the total length along the center of the curve and use a consistent average width. For complex yard shapes, break the area into smaller rectangles, calculate each, and add them together for a precise cubic yard estimate.
Can I use this calculator for landscaping material like mulch or sand?
Yes. The volume math (finding cubic yards based on length, width, and depth) remains identical regardless of the material. However, while the volume stays constant, the weight in tons will vary greatly between mulch, sand, and heavy stone.
How heavy is a cubic yard of gravel compared to other aggregates?
A cubic yard of heavy gravel or stone typically weighs about 2,800 to 3,000 lbs (roughly 1.5 tons). In comparison, lighter material like dry topsoil weighs about 1.1 tons per yard. Moisture content can also add significant weight to your aggregate estimate.