Calculation note
Asphalt estimating links geometry to weight. A driveway is measured as length, width and compacted depth, but asphalt plants and truck tickets usually work in tons. A good record keeps the density assumption visible so the conversion can be challenged before money is spent.
Paving starts as a measured volume
Length, width and compacted thickness describe the finished mat volume. That geometric quantity is the safest starting point for a homeowner, estimator or student.
Tonnage depends on density
Asphalt mix is bought and hauled by weight. The calculator therefore makes density an input rather than hiding it, because supplier mix data and compaction targets can change the final tonnage.
A printable quote note separates arithmetic from pavement design
The printout is useful for supplier calls and quote comparisons, but it does not decide base depth, drainage, traffic loading, lift design or local paving specification requirements.