What one ton of asphalt covers
Coverage is the bridge between the plant's unit (tons) and yours (square feet). One number to memorize — 80 ft² per ton at 2 inches — and two tables for everything else.
Contents
Coverage per ton
| Compacted thickness | Typical use | Coverage per ton |
|---|---|---|
| 1 in | Thin overlay, leveling course | 160 ft² |
| 1.5 in | Surface course over binder | 107 ft² |
| 2 in | Overlays, paths | 80 ft²The benchmark figure |
| 3 in | Residential driveways (over 6 in base) | 53 ft² |
| 4 in | Parking lots, heavier drives | 40 ft² |
| 6 in | Streets, full-depth structure | 27 ft² |
Concrete coverage works the same way but is quoted per cubic yard instead of per ton — the concrete coverage guide has those tables if you are comparing pavements.
Coverage per truckload
| Compacted thickness | Tandem load (14 tons) | What that means |
|---|---|---|
| 1 in | 2,240 ft² | A tennis court, twice |
| 1.5 in | 1,500 ft² | Large 3-car driveway overlay |
| 2 in | 1,120 ft² | Two average driveways |
| 3 in | 745 ft² | One 12 × 60 ft driveway, with margin |
| 4 in | 560 ft² | Small commercial apron |
| 6 in | 378 ft² | A truck-yard patch |
The coverage formula
Coverage (ft²/ton) = 2,000 ÷ (145 × t ÷ 12)
- 2,000
- pounds per US ton
- 145
- compacted HMA density (lb/ft³)
- t
- compacted thickness (inches)
At t = 2: 2,000 ÷ 24.2 = 82.8 ft², quoted as 80 with allowance. The table values round the same way.
Worked example: sizing an order from coverage
A 24 × 36 ft parking pad, 4 in compacted hot mix over an existing sound base.
- 1
Area
24 × 36 = 864 ft²
- 2
Coverage at 4 in
40 ft² per ton
- 3
Tonnage
864 ÷ 40 = 21.6 tons
- 4
Waste at 5%
21.6 × 1.05 = 22.7 tons
Result: Order 23 tons — a tri-axle (17 t) plus a small second load, or two tandems with a little left for the approach.
Frequently asked questions
Get your exact tonnage
The calculator runs the coverage math for any area, thickness and waste factor.
Keep reading
Sources & references
- [1]MS-4: The Asphalt Handbook, 7th ed. — Asphalt Institute, 2007
- [2]Asphalt Pavement Design Guide (APD-1) — National Asphalt Pavement Association, 2020