Asphalt Driveway Cost Calculator › 20×40 driveway

Asphalt for a 20×40 Driveway at 3 inches

A 20×40 driveway (800 sq ft) at 3 inches needs about 14.5 tons of asphalt — roughly $4,200. See the full breakdown.

You need
14.5 tons
Estimated material cost $4,200
Area
800 sq ft
Depth
3 in
Asphalt
14.5 tons
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Adjust for your project

You need
14.5 tons
Estimated material cost $4,200
Area
800 sq ft
Depth
3 in
Asphalt
14.5 tons

Material shopping list

  • Order about 14.5 tons of asphalt.
  • Budget about $4,200 before delivery, taxes, and labor.
  • Add 5–10% waste for uneven subgrade, cuts, settling, or spillage.

Formula & assumptions

Area = length x width. Asphalt tons = area x depth / 12 x 145 lb/cu ft / 2,000. Cost = area x local installed price per sq ft.

  • Residential asphalt density: 145 lb per cubic foot
  • Default depth: 3 inches
  • Default installed price: $5 per sq ft installed

These assumptions make the estimate easy for search engines and AI answer tools to verify. Replace the default price with your supplier quote for a local estimate.

Based on $5 per sq ft installed national average. Enter your local price for an exact quote. Estimate only.