How Much Asphalt Millings for a 18x90 Driveway?
How much asphalt millings for a 18x90 driveway is a quick volume problem. 1,620 square feet at 4 inches comes to 20.00 cubic yards. Asphalt millings usually weighs about 1.2 to 1.4 loose tons per cubic yard, so plan on roughly 26.0 tons.
Volume and tonnage calculator →The math for a 18x90 driveway
- Area: 18 × 90 = 1,620 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 1,620 × 0.333 = 540.0 cu ft.
- Cubic yards: ÷ 27 = 20.00 yd³.
- Tons: × 1.3 = 26.0 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 | 15.00 | 19.5 | 21.5 |
| 4 in | 20.00 | 26.0 | 28.6 |
| 6 in | 30.00 | 39.0 | 42.9 |
About asphalt millings
Millings vary by source: some loads are fine and uniform, others carry chunks. Ask the supplier for a screened product if you want a smoother finish, and check local rules, since some areas restrict their use near water. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.
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. Since the driveway carries car and truck traffic, a little extra depth is cheap insurance.
Ordering tips
- Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
- Delivery size. 28.6 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.
When to choose asphalt millings
Works well for:
- Rural driveways and farm lanes
- Parking areas where a dust-free surface is wanted
- Low-cost base under a future paved surface
Poor fit for:
- 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 4 inches takes about 4.6 tons.
- Weight used here: about 1.3 tons per cubic yard.
Where estimates go wrong
- 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.
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Questions people ask
How many tons of asphalt millings for a 18x90 driveway?
About 26.0 tons at 4 inches deep, or 28.6 tons with 10 percent extra.
How many cubic yards is a 18x90 driveway at 4 inches?
About 20.00 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 18x90?
1,620 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 18x75 Driveway?
- How Much Asphalt Millings for a 18x80 Driveway?
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