Gravel driveway pricing is square footage times a rate set by depth, and the calculator above comes loaded with example rates of $1.25 per square foot at 4 inches and $1.75 at 6 inches. Simple math, but three decisions hiding inside that rate decide whether the customer gets a driveway or a long pile of rock.
Depth is where the money is
Rock is sold by weight and hauled by the truckload, so depth moves your cost almost one-for-one. Going from 4 inches to 6 inches means half again the material on every square foot, which is exactly why the example rates step from $1.25 to $1.75. Match depth to the situation: an established drive getting refreshed needs less than a brand new cut through a soft field, and a driveway that sees a horse trailer or a loaded dump trailer needs more than one that sees a sedan. Quote each depth as its own rate instead of averaging in your head.
Fabric keeps the rock out of the mud
The classic gravel driveway complaint is that the rock disappears. It does not wash away, it sinks, pushed down into soft subgrade one axle load at a time. A geotextile separation layer under the rock stops that: soil stays down, rock stays up, and the driveway keeps its thickness instead of needing a fresh load every couple of seasons. The example add-on above carries fabric at $0.35 per square foot. On a 12 by 100 foot driveway, that is 1,200 square feet, so $420 at the example rate, cheap insurance against re-doing your own work.
Crown and compaction separate a driveway from a rock pile
Dumped and spread is not built. A driveway should be shaped with a crown so water runs to the edges, and compacted so the surface locks together instead of raveling into loose windrows. Skip either one and the wheel paths rut, water ponds, and potholes start their careers. This is the labor and equipment time inside your rate, and it is the difference between your work and the neighbor with a tractor. The full method, from measuring to material, is in how to price a gravel driveway.
For the sanity check: that same 1,200 square foot driveway runs $1,500 at the 4 inch example rate and $2,100 at 6 inches, before fabric or excavation. When customers ask about upgrading the surface someday, the comparisons are laid out in gravel vs asphalt driveway and gravel vs concrete driveway.
All rates here are examples. PriceDesk runs this calculator with your rock, trucking, and labor built into your own rates, free for 14 days, so the number you text back is yours.