Gravel Calculator
Estimate how much gravel you need for driveways, patios, garden beds, and pathways. Convert the project into cubic yards, tonnage, and optional material cost before you order.
Typical landscaping gravel ranges from about 90 to 120 lb per cubic foot.
Enter project details to estimate how much gravel to order.
1. Compute area from your chosen shape or total area input.
2. Convert depth into feet so the volume lands in cubic feet.
3. Convert the result into cubic yards or cubic meters if your supplier sells in those units.
Gravel volume formula
Gravel orders are typically based on volume. The core formula is:
Volume = Area × Depth
For accurate ordering, keep the units consistent. This calculator converts your depth to feet first, then shows the final estimate in cubic feet, cubic yards, and cubic meters.
Buying and installation tips
Frequently asked questions
How do you calculate how much gravel you need?
First find the area you want to cover. Then convert the gravel depth into feet and multiply area by depth to get cubic feet. Divide cubic feet by 27 to convert to cubic yards, which is the most common supplier unit.
How deep should gravel be for a driveway or walkway?
Walkways often use about 2 to 3 inches of gravel, while driveways often need 3 to 4 inches or more depending on traffic and base preparation. Heavy vehicles usually need a deeper, compacted base.
Why does gravel density matter?
Density converts volume into delivery weight. Two gravel types can need the same cubic yards but have different total tonnage, which affects hauling, pricing, and load planning.
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