Enter the paved area's length, width, and thickness to calculate how many tons of asphalt you need.
How to Use the Asphalt Calculator
Enter the paved area's length, width, and intended thickness in inches. The compacted density defaults to a typical hot-mix figure, and price per ton is optional — leave it at $0 to see tonnage only.
Asphalt is bought by weight, not by area, which is why this calculator converts a volume into tons rather than stopping at cubic feet.
The Formula
Volume = Length × Width × (Thickness ÷ 12)
Weight (lb) = Volume × Density
Tons needed = Weight ÷ 2000Where the 145 lb/ft³ Figure Comes From
It's a widely cited compacted density for standard hot-mix asphalt, though real mixes typically fall between 140 and 150 lb/ft³ depending on the aggregate blend. Ask your paving contractor for their mix's actual density if precision matters — a few pounds per cubic foot shifts the tonnage more than it seems across a large driveway.
Thickness Depends on What's Underneath
A residential driveway over a solid base commonly runs 2–3 inches of surface asphalt, while areas carrying regular vehicle traffic often call for more. This tool doesn't recommend a thickness — that's a decision for the paving contractor based on soil and load — it just converts whatever thickness you specify into tonnage.
Compaction Changes the Numbers
Loose asphalt takes up more volume than it does once a roller compacts it, which is exactly why the density figure here is a compacted value rather than a loose one. Ordering by loose volume instead of compacted weight is a common way installations end up short.