Asphalt for a 20 × 40 Driveway
A 20 × 40 ft two-car driveway with depth is 800 sq ft. It needs about 10.2 tons of asphalt at 2 inches, 15.2 tons at 3 inches or 20.3 tons at 4 inches, including 5% for waste. A new driveway this size typically costs $3,136–$5,000 installed.
A 20 × 40 ft driveway holds four cars: two side by side, two deep. It is a common size on lots with a deeper front setback.
| Thickness | Tons | Cubic yards | 15-ton trucks | Material at $121/t |
|---|---|---|---|---|
| 2 in | 10.2 | 5.19 | 1 | $1,228 |
| 3 in | 15.2 | 7.78 | 2 | $1,842 |
| 4 in | 20.3 | 10.37 | 2 | $2,456 |
Open in the asphalt calculator Price this driveway
Cost of a 20 × 40 asphalt driveway
| Job | Typical installed cost |
|---|---|
| New driveway (incl. base work) | $3,136–$5,000 |
| Resurface existing asphalt | $1,600–$4,000 |
| Professional sealcoating | $136–$192 |
Ranges are 800 sq ft × typical prices per square foot ($3.92–$6.25 new, $2–$5 resurfacing; LawnStarter, 2026). For a figure with your own prices and base depth, use the asphalt driveway cost calculator.
Other materials for this size
- Gravel base: 13.8 tons for 4 inches, 20.7 tons for 6 inches.
- Sealer: about 22.9 gallons (5 pails of 4.75 gal) for two coats at 70 sq ft per gallon per coat. See the sealer calculator.
- Millings instead of hot mix: about 20.8 tons for a 4-inch compacted layer. See the millings calculator.
Notes for a 20 × 40 driveway
- At 800 sq ft, the job is big enough that the price per ton of asphalt matters more than the minimum charge.
- A 4" driveway this size is roughly 20 tons with waste, so expect two truckloads; ask the plant about delivery timing so the second load is still hot.
- Driveways this deep often have a slope. A crew should compact the base on the slope carefully so the asphalt does not creep downhill.
Frequently asked questions
How many tons of asphalt for a 20x40 driveway?
A 20 × 40 ft driveway is 800 sq ft. Including 5% for waste, it takes about 10.2 tons of asphalt at 2 inches thick, 15.2 tons at 3 inches and 20.3 tons at 4 inches (145 lb/ft³).
How much does a 20x40 asphalt driveway cost?
At typical 2026 prices of $3.92–$6.25 per sq ft, a new 20 × 40 ft asphalt driveway costs about $3,136–$5,000 installed. Resurfacing a sound existing driveway runs about $1,600–$4,000.
How many cubic yards of asphalt for a 20x40 driveway?
About 5.19 cubic yards at 2 inches, 7.78 at 3 inches and 10.37 at 4 inches, including 5% waste.
How much gravel goes under a 20x40 driveway?
A 4-inch compacted gravel base is about 9.9 cubic yards (13.8 tons); a 6-inch base is about 14.8 cubic yards (20.7 tons), at 1.4 tons per cubic yard.
Other driveway sizes
Related calculators
Sources
- LawnStarter: How much does an asphalt driveway cost? (Oct 19, 2026)
- LawnStarter: Cost to resurface an asphalt driveway (2026 edition (no day shown))