How Much Asphalt Millings for a 400 Foot Driveway?
How much asphalt millings for a 400 foot driveway: about 77.0 tons for a 12-foot-wide lane at 4 inches deep. That is 4,800 square feet and 59.26 cubic yards.
Volume and tonnage calculator →The math
- Area: 4,800.0 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 4,800.0 × 0.333 ÷ 27 = 59.26 yd³.
- Tons: × about 1.3 tons per yard = 77.0 tons.
The asphalt millings calculator does this for any size.
Related: How Much Gravel for a 400 Foot Driveway?
Asphalt millings needed by depth
| Depth | Cubic yards | Tons of asphalt millings | Tons +10% |
|---|---|---|---|
| 2 in | 29.63 | 38.5 | 42.4 |
| 4 in | 59.26 | 77.0 | 84.7 |
| 6 in | 88.89 | 115.6 | 127.1 |
| 8 in | 118.52 | 154.1 | 169.5 |
Tons by driveway width
| Width | Tons at 4 in | Tons at 6 in |
|---|---|---|
| 10 ft | 64.2 | 96.3 |
| 12 ft | 77.0 | 115.6 |
| 14 ft | 89.9 | 134.8 |
| 16 ft | 102.7 | 154.1 |
Related: How Much Asphalt Millings for 400 Square Feet?
Truck loads
With about 10 percent extra, this is 84.7 tons, roughly 6 loads if the yard runs 15-ton trucks. Ask the driver to tailgate-spread it along the drive to save hours of raking.
Layers for a lasting driveway
If this is a new driveway on soil, build a base of 4 to 6 inches of coarse stone first and finish with a packable surface stone. For a refresh, 2 inches over the old surface is common. Long drives benefit from a crown so water runs to the edges.
Ordering and delivery
If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. Asphalt millings bind into a fairly firm surface when compacted and warmed by the sun. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Questions people ask
How many tons of asphalt millings for a 400 ft driveway?
About 77.0 tons at 12 ft wide and 4 inches deep.
How many truck loads for a 400 ft driveway?
About 6 loads of 15 tons, including some extra.
How many tons of asphalt millings are in a cubic yard?
Roughly 1.3 tons for planning, but suppliers vary with stone size and moisture.
Do I need to compact it?
Yes for anything that carries weight. Compact in lifts of a few inches with a plate compactor.
Related guides
- How to Build a Gravel Driveway That Lasts
- How Much Gravel for a 100 Foot Driveway? Tons by Depth
- A Passing Pullout on a Long Driveway
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Asphalt Millings for a 250 Foot Driveway?
- How Much Asphalt Millings for a 300 Foot Driveway?
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