How thick should a concrete driveway be?

4 inches is standard for cars; use 5–6 inches for trucks or RVs. Thicker means more concrete and cost.

Concrete Driveway Calculator

Estimate the concrete for a driveway — cubic yards, bags and total cost.

Loading calculator…

Cubic feet = Length × Width × (Thickness ÷ 12) · Cubic yards = Cubic feet ÷ 27 · Cost = Cubic yards × price per yard

Driveways are usually 4 in thick (6 in for heavy vehicles). For this size, ready-mix delivery beats bags.

A 40 × 20 ft driveway at 4 in thick is about 9.9 cubic yards — at $150/yard, roughly $1,480.

How thick should a concrete driveway be?: 4 inches is standard for cars; use 5–6 inches for trucks or RVs. Thicker means more concrete and cost.