Updated July 18, 2026
How it works
Tons = (cubic feet × 145) ÷ 2000, using the standard hot-mix asphalt (HMA) density of 145 lb/ft³. Multiply by your price per ton for a material estimate. Professional installation typically adds $3-7 per square foot.
The 145 lb per cubic foot density above is the standard hot-mix planning figure cited across the paving references linked below.
How many tons of asphalt do I need?
Compacted hot mix runs about 145 lb per cubic foot, so a cubic yard weighs close to 2 tons. Asphalt is ordered and delivered by the ton, so the calculator turns your area and thickness into tonnage. Density varies a little by mix and aggregate, roughly 142 to 148 lb/ft³, but 145 is the standard planning figure.
The formula, worked out
Take a driveway 40 feet long, 12 feet wide, paved 3 inches thick. Convert thickness to feet: 3 ÷ 12 = 0.25 ft. Then:
- Cubic feet: 40 × 12 × 0.25 = 120 ft³
- Weight: 120 × 145 = 17,400 lb
- Tons: 17,400 ÷ 2,000 = 8.7 tons
At $60 per ton that is about $522 in material. Mix cools fast once it is dumped, so order slightly over rather than short; a paving crew cannot pause mid-job to wait on a second load.
Coverage by thickness
One ton of hot mix covers less ground as the layer gets thicker.
| Thickness | Coverage per ton | Typical use |
|---|---|---|
| 2″ | about 80 ft² | overlays, light driveways |
| 3″ | about 53 ft² | residential driveways |
Base preparation
Asphalt is only as good as what is under it. Driveways want 4 to 6 inches of compacted gravel base; parking lots and lots carrying trucks want 6 to 8 inches. Poor base prep, not the asphalt itself, is the usual reason paving cracks and sinks within a few years. Compact the base in lifts and confirm it drains before any mix goes down.
Cost and ordering notes
Material commonly runs $40 to $80 per ton, swinging with oil prices and region. Installed driveways land around $3 to $12 per square foot once labor, base work, and equipment are in. A standard dump truck carries 8 to 12 tons, and most residential driveways use only 1 to 3 tons, so you are often paying a minimum load or trip charge regardless. Time delivery so the crew is ready to place and compact the moment it arrives.
Sources: The Calculator Site density data, HomeGuide cost data.
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