How Much Gravel for a Driveway

Gravel driveways are typically built in two layers — a compacted base for structure and a finer top layer for a smooth driving surface. How much gravel you need depends on the driveway's size, the depth of each layer, and how much traffic it will carry.

Recommended depth by use

Light foot traffic / garden path: 2–3 in of gravel is usually enough.
Standard car driveway: 4–6 in total, often a 4 in compacted base plus a 2 in surface layer.
Heavy vehicles or soft/clay soil: 8–12 in across a base and surface layer, sometimes with a geotextile fabric underneath.

Estimating the amount

Multiply the driveway's length by its width to get the area, then multiply by the depth (converted to feet) to get volume. A 50 ft × 12 ft driveway at 6 in deep needs about 11.1 yd³ of gravel before waste. Add 10% for compaction and uneven sub-grade, and round up to the nearest full yard since most suppliers sell gravel by the yard.

For a single top layer, use the Gravel Calculator. For a driveway with a separate base and surface layer, use the Driveway Calculator, which totals both layers and shows each one in the breakdown.

Choosing a gravel type

Crushed stone (like #57 stone) is the most common base and surface material for driveways — it locks together well when compacted. Pea gravel looks nicer but shifts more underfoot and is better suited to light-traffic paths than daily vehicle use. The Gravel Calculator lets you pick a gravel type and price per ton to estimate total cost alongside volume.