Estimate how many tons of hot-mix asphalt you need for a driveway, road, or parking area based on area and compacted thickness.
Residential driveways typically use 2–3 inches of compacted asphalt over a solid gravel base; heavier vehicle areas may need 3–4 inches.
At 2 inches thick, expect roughly 0.011–0.012 tons of asphalt per square foot, depending on the exact density.
Asphalt is almost always sold by weight (tons), since it's delivered hot and its volume changes as it compacts and cools.