How Much Asphalt Millings for 100 Square Feet?
How much asphalt millings for 100 square feet depends on depth. At 4 inches you need about 1.23 cubic yards, roughly 1.6 tons at 1.3 tons per yard. Going to 6 inches raises it to 2.4 tons.
Volume and tonnage calculator →Asphalt millings for 100 sq ft by depth
| Depth | Cubic yards | Tons | Tons +10% |
|---|---|---|---|
| 3 in | 0.93 | 1.2 | 1.3 |
| 4 in | 1.23 | 1.6 | 1.8 |
| 6 in | 1.85 | 2.4 | 2.6 |
Working it out
- 100 sq ft × (4 ÷ 12) ft = 33.3 cubic feet.
- ÷ 27 = 1.23 cubic yards.
- × 1.3 tons per yard = 1.6 tons.
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. Most suppliers will quote 1.2 to 1.4 loose tons per yard for this material.
Getting the order right
- Measure odd shapes in pieces. Split curves and L-shapes into rectangles and add them.
- Add a margin. About 10 percent covers compaction and low spots.
- Bulk or bags. Bulk delivery is the practical choice here.
- Prep first. Remove sod, compact the subgrade and set edging before the stone arrives.
Use the volume and tonnage calculator for any other size.
Where asphalt millings fits
Good uses:
- 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 10x20 area at 2 inches takes about 1.6 tons.
- Weight used here: about 1.3 tons per cubic yard.
Common estimating mistakes
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- 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 100 square feet?
About 1.6 tons at 4 inches deep.
How many cubic yards of asphalt millings for 100 square feet?
About 1.23 yards at 4 inches.
How much asphalt millings for 100 square feet at 3 inches?
About 1.2 tons, or 0.93 cubic yards.
How much does a yard of asphalt millings weigh?
About 1.2 to 1.4 loose tons.
Should I add extra?
Yes, about 10 percent is a common allowance.
Related guides
- How Many Tons of Asphalt Millings for a 40x25 Area?
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Ton of Gravel Cover? Depth Chart
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