Neighbor Joe paved his own driveway three years ago. He bought a single truckload of cheap hot mix, spread it at barely an inch and a half over a dirt base, and celebrated. By the second winter the surface was raveling - gravel kicking loose under tire edges - and by summer three cracks had spiderwebbed across the apron. He is now resurfacing the whole thing at twice the cost. The mistake was not the truck; it was the thickness. Thin asphalt over an unprepared base is the number one reason residential driveways fail in under five years.
Why you order by the ton
Asphalt is not sold by the cubic yard at the plant. It goes out by weight, on a truck scale ticket, because the plant measures the load in tons. A cubic yard of compacted hot mix weighs about 1.4 to 1.6 tons depending on the aggregate. The tool shows you both numbers - cubic yards for the geometry, tons for the quote - but the ton is what the driver will hand you on the scale ticket.
The thickness table
| Use | Hot mix on top | Gravel base below |
|---|---|---|
| Walkway | 1.5 to 2 in | 4 in |
| Car driveway | 2 to 3 in | 4 to 6 in |
| RV or truck parking | 4 in | 6 to 8 in |
| Commercial light traffic | 4 to 6 in | 8 in |
The gravel base is not optional. A lot of homeowners price the asphalt alone, then discover the base layer is a second quote. If your sub-base is already crushed stone and compacted, you can skip it. If it is native dirt, budget for 4 to 6 inches of gravel before the blacktop goes down.
Worked example - 20 by 40 ft at 2.5 inches
A typical suburban driveway that is 20 ft wide and 40 ft long, paved at the residential standard of 2.5 inches, comes out to about 6 cubic yards. At 1.5 tons per cubic yard, that is roughly 9.3 tons of hot mix. Add 5 percent for the apron and a few patch spots and you are ordering about 10 tons. A tandem dump truck carries 10 to 14 tons, so this is one load - no splitting, no second trip fee.
Hot mix versus cold patch
Do not confuse the two. Hot mix is manufactured at an asphalt plant at around 300 degrees F, hauled in a insulated dump truck, spread by a paving screed and rolled while still hot. It bonds into a single wearing surface and lasts 15 to 20 years. It must be placed the day it is produced.
Cold patch is the 50 lb bagged material you buy at the hardware store for filling potholes. You shovel it into a crack, tamp it down, and drive over it. It is a winter bandage - it does not bond like hot mix, it loosens over a season, and it is not a surface material for a whole driveway. If you are ordering by the bag, you are patching, not paving.
What to ask the contractor
Get three things in writing: the tons going on, the compacted thickness in inches, and whether the price includes the gravel base. A quote that sounds half of the neighbor’s usually means half the thickness. Paving a driveway is one of those jobs where the cheap version costs more over a decade.
Asphalt Calculator
Avoid the thin-over-mud mistake, measure the driveway, and read out the tonnage your paving crew will quote you.
How to use
- Measure the driveway length and width in feet
- Set thickness - 2 to 3 inches compacted for a residential car driveway
- Add 5 percent waste for edges and patch overlap
- Type in the price per ton to see the material total
- Confirm the number with your paving contractor before the truck arrives
Supported formats and limits
- Estimate only - asphalt density runs about 1.4 to 1.6 tons per cubic yard
- Hot mix is sold by the ton, never by the cubic yard at the quarry
- Residential drives are 2 to 3 inches; RV and truck traffic wants 4 inches
- The gravel base underneath is priced and ordered separately
Examples
A 20 by 40 ft driveway at 2.5 inches deep comes to about 6 cubic yards, roughly 9.3 tons of hot mix.Common errors
- Length and width must both be positive numbers
- Thickness should sit between 1.5 and 6 inches
- Waste factor stays between 0 and 15 percent - asphalt is not mulch
- Price per ton must be zero or positive
Privacy and browser support
All measurements stay on your device. Nothing is uploaded.
FAQ
How thick should a residential asphalt driveway be?
Two to 3 inches of compacted hot-mix over 4 to 6 inches of compacted gravel base. Park an RV or heavy truck and go to 4 inches on top, with 6 to 8 inches of base. Thinner than 2 inches and the surface ravels and cracks in the first freeze.
How many tons of asphalt do I need?
Hot mix weighs about 1.4 to 1.6 tons per cubic yard. A 20 by 40 ft driveway at 2.5 inches comes to about 9.3 tons. Every paving contractor quotes by the ton, so this is the number you hand them.
Hot mix versus cold patch - which is which?
Hot mix is the plant-produced, 300-degree material the paving crew lays with a screed and rolls. It is only sold by the ton and must go down the day it is made. Cold patch is bagged asphalt in a 50 lb bag, for filling potholes by hand in winter - it is a temporary fix, not a driveway surface.
Can I pave my own driveway?
Small patches, yes, with cold patch bags. A full driveway needs a dump truck of hot mix, a paving screed, a roller and a crew that works before the material cools. DIYers end up with a lumpy surface 24 hours later.
How many square feet does one ton cover?
About 80 square feet at 2 inches thick, or 53 square feet at 3 inches. At 2.5 inches, plan on roughly 65 square feet per ton.
When is the best time to pave?
Late spring through early fall, when the ground is dry and above freezing. Hot mix fails on wet or frozen sub-base - it looks fine in October and cracks by March.