How Much Concrete for a Driveway
Free calculator with pre-filled dimensions • Updated March 2026
A standard 2-car driveway (20×24 ft at 6" thick) needs 8.89 cubic yards of concrete — about $1,100–$1,500 for material.
Open calculator with these dimensions →Concrete Driveway: Complete Material & Cost Guide
A concrete driveway is one of the largest residential concrete projects. The standard 2-car driveway measures approximately 20×24 feet with a minimum thickness of 6 inches to support vehicle weight. Unlike patios which use 4-inch thickness, driveways must handle the concentrated load of 4,000+ lb vehicles.
Material Requirements
| Material | Quantity | Estimated Cost (2026) |
|---|---|---|
| Ready-mix concrete (4,000 PSI) | 9.8 yd³ (includes 10% extra) | $1,175–$1,665 |
| Gravel base (6" compacted) | 8.9 yd³ | $180–$310 |
| 2×6 form lumber | 15 boards (12-foot) | $90–$135 |
| #4 rebar (12" OC grid) | 48 pieces (20-foot) | $200–$350 |
| Expansion joint material | 24 linear feet | $12–$18 |
| Curing compound | 3 gallons | $45–$60 |
Total DIY material cost: $1,700–$2,500. Professional installation: $4,500–$8,000 with standard broom finish.
Why 6 Inches Thick?
Driveways require 6 inches minimum because vehicles create concentrated point loads through their tires. A 4-inch slab may crack under a 5,000-lb SUV, especially at the edges and where the driveway meets the street (the apron). Many contractors recommend 8 inches at the apron where turning vehicles stress the concrete most.
Key Design Requirements
- Rebar reinforcement is mandatory. Unlike patios, driveways need #4 rebar on a 12-inch grid pattern to resist cracking under vehicle loads. Wire mesh alone is insufficient.
- 4,000 PSI mix minimum. Standard 3,000 PSI residential mix is not strong enough for driveways. Specify 4,000 PSI when ordering ready-mix, or use Quikrete 5000 if bagging.
- Control joints every 10–12 feet on a 20×24 driveway means 2 transverse joints, creating three roughly 8-foot sections.
- 2% slope away from garage. That's approximately 5 inches of fall over 20 feet — essential to prevent water from entering the garage.
Pro Tips
- Consider fiber-reinforced concrete. Adding polypropylene or steel fiber to the mix at $0.15–$0.20/sqft provides secondary crack resistance on top of rebar.
- Seal within 30 days. Concrete driveway sealer ($0.15–$0.25/sqft) prevents salt damage, staining, and freeze-thaw deterioration. Reapply every 2–3 years.
- Plan for utilities. If water, gas, or electrical lines run under the driveway, install conduit sleeves before pouring so future repairs don't require breaking the slab.
Frequently Asked Questions
How much does a concrete driveway cost?
In 2026, DIY materials for a standard 2-car driveway (20×24 ft) cost $1,700–$2,500. Professional installation with broom finish runs $4,500–$8,000. Stamped or colored concrete adds $2,000–$4,000.
How thick should a concrete driveway be?
Minimum 6 inches for standard vehicle traffic. The apron (where the driveway meets the street) should be 8 inches. Use 4,000 PSI concrete and #4 rebar reinforcement for long-term durability.
How long before I can drive on new concrete?
Wait a minimum of 7 days before driving passenger vehicles on new concrete. For trucks or heavy vehicles, wait 14 days. The concrete reaches 70% strength at 7 days and 99% at 28 days.