How Much Does 40 Tons of Asphalt Cover?
How much does 40 tons of asphalt cover: about 3,310 square feet at 2 inches compacted and about 2,207 square feet at 3 inches, using 145 pounds per cubic foot. The thickness choice changes coverage more than anything else.
Asphalt tonnage calculator →Coverage by thickness
| Thickness | Square feet | Square yards |
|---|---|---|
| 1.5 in | 4,414 | 490 |
| 2 in | 3,310 | 368 |
| 2.5 in | 2,648 | 294 |
| 3 in | 2,207 | 245 |
| 4 in | 1,655 | 184 |
The math
- 40 tons × 2,000 = 80,000 lb.
- ÷ 145 lb per cu ft = 551.7 cu ft.
- ÷ (2 ÷ 12) ft = 3,310 sq ft at 2 inches.
In driveway terms
2,207 square feet is about a 46 by 46 foot square, or a 12-foot-wide strip about 184 feet long at 3 inches. That is typical of a residential driveway.
Things to keep in mind
- Density varies from about 140 to 150 lb per cubic foot by mix.
- Waste and base dips use 5 to 10 percent more.
- Truck loads: 40 tons is about 3 typical tandem loads.
Use the asphalt tonnage calculator for exact sizes.
Good and poor uses for asphalt
Good uses:
- Driveways, parking pads and private lanes that need a smooth, sealed surface
- Overlays on old pavement that is cracked but still structurally sound
- Areas where snow will be plowed, since a paved surface does not throw stone
Poor fit for:
- Ground that stays soft or wet, unless the base and drainage are fixed first
- Very small patches, where bagged cold patch is often simpler
- Jobs in cold weather, since hot mix needs warm temperatures to compact properly
Quick reference numbers
- Per inch over 100 sq ft: about 0.62 tons of asphalt (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 6.2 tons.
- Another size for comparison: a 8x16 area at 2 inches takes about 1.6 tons.
- Weight used here: about 2.0 tons per cubic yard (roughly 145 lb per compacted cubic foot).
Where estimates go wrong
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Questions people ask
How many square feet does 40 tons of asphalt cover at 2 inches?
About 3,310 square feet.
At 3 inches?
About 2,207 square feet.
At 1.5 inches?
About 4,414 square feet.
What density is assumed?
145 lb per compacted cubic foot.
Should I order extra?
Many estimators add 5 to 10 percent.
Related guides
- How Many Square Feet Does a Ton of Asphalt Cover?
- How Many Tons of Asphalt per 1,000 Square Feet?
- How Many Square Yards Does a Ton of Asphalt Cover?
- How Much Does 30 Tons of Asphalt Cover?
- How Much Does 35 Tons of Asphalt Cover?
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