Gravel Calculator
Use this gravel calculator to estimate how much gravel you need for a driveway, path, drainage area, patio base or landscape project. Enter the project dimensions and depth, then adjust density and local price if your supplier provides more specific values.
Enter project details
Planning estimate only. Confirm local prices, supplier specifications and site conditions before ordering.
Your estimate
Order bulk gravel by supplier selling unit and use the supplier density when converting volume to tons. Compaction, gradation and moisture can change the final load quantity.
Request a local gravel project quote
Complete three short steps to check for available local professionals.
Free to submit No purchase required
ProjectMetrica helps route your gravel / pea gravel / fill work request to participating platform partners or service providers when an eligible match is available.
- Availability depends on ZIP code, service and project details.
- ProjectMetrica is not the contractor and may receive compensation for an accepted request.
ProjectMetrica collects this request and may share it with participating service providers and platform partners for the home-improvement project you selected. The consent session is independently recorded. See the Privacy Policy.
How the gravel calculator works
Volume = length × width × depth. The calculator converts inches to feet, applies the waste allowance, converts cubic feet to cubic yards and estimates tons using the selected density.
For a better estimate
- Measure irregular areas in smaller rectangles and add the results together.
- Use compacted design depth when gravel will be mechanically compacted.
- Supplier density can vary by stone size, moisture and gradation, so use a local tons-per-yard figure when available.
Tools that can help with this project
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
Frequently asked questions
How much gravel do I need?+
Multiply project area by gravel depth to find volume, then convert that volume to cubic yards. Use supplier density when you also need a tonnage estimate.
How many tons are in a cubic yard of gravel?+
The conversion depends on gravel type, moisture and compaction. A supplier-specific density is more reliable than a universal conversion.
Should I add extra gravel?+
A modest allowance can cover grading, compaction and measurement variation, especially on irregular or sloped sites.