Asphalt Driveway Calculator
An asphalt driveway calculator finds how much asphalt your driveway needs by converting its area and thickness to tons. Residential driveways are usually 2 to 3 inches of asphalt over a gravel base. Enter your driveway dimensions and thickness below for tonnage and an estimated cost.
asphalt density ~145 lb per cubic foot; typical driveway 2 to 3 inches.
- Cubic yards
- 0
- Estimated cost
- $0.00
Enter your dimensions to see the result.
Estimate only. Material yields and prices vary by supplier and region; confirm before ordering.
How Much Asphalt for a Driveway?
To calculate driveway asphalt, multiply length by width by thickness in feet, multiply by 145 pounds per cubic foot, and divide by 2,000 for tons. A 40 by 12 foot driveway at 3 inches thick is 120 cubic feet, about 8.7 tons. The calculator gives the tonnage and lets you add an allowance for compaction and edges, which real paving jobs always need.
What Goes Under an Asphalt Driveway?
An asphalt driveway sits on a compacted gravel base, usually crushed stone, which provides drainage and structure. The asphalt layer itself is the 2 to 3 inches you calculate here, but a full driveway project also needs the base material, which you can size with the gravel driveway calculator. Planning both layers gives an accurate total material order.
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Frequently asked questions
- How much asphalt for a 40 foot driveway?
- A 40 by 12 foot driveway at 3 inches thick needs about 8.7 tons of asphalt. At 2 inches it needs about 5.8 tons for the same area.
- What base does an asphalt driveway need?
- Asphalt driveways sit on a compacted crushed stone base for drainage and support. Size the base with the gravel driveway calculator and the asphalt with this one.