How Much Asphalt Millings for a 24x40 Driveway?
How much asphalt millings for a 24x40 driveway: at 4 inches deep you need about 11.85 cubic yards, which is roughly 15.4 tons at 1.3 tons per yard. The driveway covers 960 square feet, so every inch of depth adds about 2.96 yards.
Volume and tonnage calculator →The math for a 24x40 driveway
- Area: 24 × 40 = 960 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 960 × 0.333 = 320.0 cu ft.
- Cubic yards: ÷ 27 = 11.85 yd³.
- Tons: × 1.3 = 15.4 tons.
The volume and tonnage calculator does this for any size.
Asphalt millings needed by depth
| Depth | Cubic yards | Tons (approx.) | Tons +10% |
|---|---|---|---|
| 3 in | 8.89 | 11.6 | 12.7 |
| 4 in | 11.85 | 15.4 | 16.9 |
| 6 in | 17.78 | 23.1 | 25.4 |
About asphalt millings
Asphalt millings are ground-up old pavement. When compacted and warmed by sun they bind into a fairly firm surface, which is why they are popular for rural drives and lots. Weight per yard is a planning number; the scale ticket at the yard is the real one.
Preparing the driveway
Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. For car and truck traffic, the depths in the table above are a reasonable starting range.
Ordering tips
- Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
- Delivery size. 16.9 tons may take more than one typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
- Bulk vs bags. At this size bulk delivery is usually the practical choice.
- Where it drops. Have the truck dump as close to the driveway as firm ground allows.
Where asphalt millings fits
Best suited to:
- Rural driveways and farm lanes
- Parking areas where a dust-free surface is wanted
- Low-cost base under a future paved surface
Less suited to:
- Areas near wells or streams where local rules limit them
- Decorative or barefoot areas
- Jobs needing a uniform, clean look
Quick reference numbers
- Per inch over 100 sq ft: about 0.40 tons of asphalt millings (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.0 tons.
- Another size for comparison: a 12x24 area at 3 inches takes about 3.5 tons.
- Weight used here: about 1.3 tons per cubic yard.
Mistakes that throw off the order
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Questions people ask
How many tons of asphalt millings for a 24x40 driveway?
About 15.4 tons at 4 inches deep, or 16.9 tons with 10 percent extra.
How many cubic yards is a 24x40 driveway at 4 inches?
About 11.85 cubic yards.
How much does a cubic yard of asphalt millings weigh?
Usually around 1.2 to 1.4 loose tons, depending on stone size, fines and moisture.
How deep should asphalt millings be for a driveway?
The table above shows 3 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.
How many square feet is 24x40?
960 square feet.
Related guides
- How Many Tons of Asphalt Millings for a 40x25 Area?
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Asphalt Millings for a 24x30 Driveway?
- How Much Asphalt Millings for a 24x35 Driveway?
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