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Gravel Driveway Calculator
Plan gravel for a new or topped-up driveway.
Enter your driveway length, width, and gravel depth to see how much you need.
How this calculation works
This gravel driveway calculator estimates the gravel needed for a new driveway or a top-up layer. We multiply length by width for the area, multiply by depth (inches converted to feet), and divide by 27 to get cubic yards.
Driveways are usually built in layers — a deeper base of larger stone with a finer top coat. A common top-up depth is about 4 inches. We also estimate tonnage using 1.4 tons per cubic yard and a rough cost of $40 per cubic yard.
For a brand-new driveway, plan on a total depth of 6–8 inches across two or more layers, and add about 10% extra for compaction.
Recommended tools & supplies
Handy products for this project. (Affiliate links — we may earn a commission.)