Frequently Asked Questions
How many tons of asphalt do I need per square foot?
It depends on thickness and density. At 3 inches compacted and 145 lb/ft3, one square foot needs about 0.018 tons, so a 400 square foot driveway needs roughly 7.25 tons before waste.
What density should I use for hot-mix asphalt?
A compacted density of about 145 pounds per cubic foot is a common planning value for dense-graded hot-mix asphalt. Ask your supplier for the exact unit weight of the mix you are buying, since it varies with aggregate and binder.
Why does compacted thickness matter?
Asphalt is spread loose and then rolled to a smaller, denser layer. Tonnage is based on the final compacted thickness, so enter the finished depth, not the loose lift height.
How much waste should I add?
A 5 to 10 percent allowance is typical. It covers spillage, an uneven subgrade, and the extra material worked into edges and joints. Add more for small or irregular jobs.
What is the difference between US tons and metric tonnes?
A US short ton is 2,000 pounds. A metric tonne is 1,000 kilograms, about 2,204.6 pounds, so one US ton equals about 0.90718 metric tonnes. Suppliers may quote either, so check the unit before you order.
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Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.