Asphalt Calculator - Estimate Asphalt Tonnage
Calculate the volume and tonnage of asphalt needed from area, thickness, and mix density.
Default 145 lb/ft³ — adjust to match your mix
Asphalt Needed
3.63 tons
Area
200.0 ft²
Weight
7250 lb
How to Calculate Asphalt Tonnage
Enter the area's length and width, the compacted thickness of the asphalt layer, and the mix density. Hot mix asphalt typically weighs around 145 lb per cubic foot (roughly 2,300 kg/m³), though that figure varies by mix design — check your supplier's spec sheet if you have one, and adjust the density field to match.
Example
A 20 ft × 10 ft driveway paved 3 inches thick at a density of 145 lb/ft³ has an area of 200 ft², a volume of 200 × 0.25 = 50 ft³, a weight of 50 × 145 = 7,250 lb, and a total tonnage of about 3.63 tons.
Common Use Cases
- Estimating asphalt tonnage for a residential driveway or walkway paving job.
- Ordering the right amount of hot mix asphalt for a parking lot resurfacing project.
- Budgeting material costs for road patching or repair work.
FAQs
What density should I use for asphalt?
The default of 145 lb/ft³ is a common average for compacted hot mix asphalt, but real mixes typically range from about 140 to 150 lb/ft³ depending on the aggregate and binder used — use your supplier's actual density figure for the most accurate order quantity.
Does this account for compaction?
This calculates the volume and weight for your target compacted thickness. Loose asphalt takes up noticeably more volume before it's rolled and compacted, so if you're measuring loose material rather than ordering by finished thickness, add extra to account for that difference.
How thick should my asphalt layer be?
Typical residential driveways use about 2 to 3 inches of surface asphalt over a compacted base, while roads and heavy-traffic areas need thicker structural layers — check local codes or a paving contractor for a thickness suited to your specific load requirements.