Asphalt Calculator
Outdoor & Pool · Updated July 2026
Enter your area and paving depth to find how much hot-mix asphalt you need — in tons — for a driveway, path, or parking area.
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Estimates only. Add extra for waste and confirm with your supplier.
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How much asphalt do I need?
Multiply area × depth in feet for cubic feet, multiply by 145 lb, then divide by 2000 for tons. Compacted asphalt weighs about 145 lb per cubic foot.
Estimating asphalt tonnage
Measure area and depth, convert to cubic feet, and multiply by about 145 lb per cubic foot, then divide by 2,000 for tons. Residential driveways are usually paved 2–3 inches thick over a compacted gravel base.
Base matters
Asphalt is only as good as what's under it — plan 4–8 inches of compacted aggregate base beneath the pavement. Order a little extra hot mix; it can't be stored, so it's better to have slightly too much on paving day.
How to use this calculator
- 1Measure length and width in feet.
- 2Choose your paving depth in inches.
- 3Read the tons of asphalt needed.
Frequently asked questions
How thick should a driveway be?
Residential driveways are typically paved 2–3 inches thick over a compacted gravel base.
How much asphalt do I need for a driveway?
At 2–3 inches thick, multiply area by depth in feet × 145 lb, then divide by 2,000 for tons.
How thick should an asphalt driveway be?
2–3 inches of asphalt over 4–8 inches of compacted gravel base for residential use.
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