Concrete driveway calculator
Short answer
A 2-car concrete driveway (20 × 20 ft at 5" thick) needs about 6.2 cubic yards of concrete — roughly $849–$1,120 in ready-mix. Labor, gravel base, and finishing bring the installed cost well above the material figure.
Concrete by driveway size (5" thick)
| Driveway | Size | Cubic yards | Ready-mix cost |
|---|---|---|---|
| 1-car | 10 × 20 ft | 3.1 | $424–$560 |
| 2-car | 20 × 20 ft | 6.2 | $849–$1,120 |
| 2-car (long) | 20 × 24 ft | 7.4 | $1,019–$1,344 |
| 3-car | 30 × 20 ft | 9.3 | $1,273–$1,681 |
| RV / extra-long | 12 × 40 ft | 7.4 | $1,019–$1,344 |
Material (concrete) cost only. Labor, excavation, gravel base, forms, and finishing typically bring the installed cost to 2–3× these figures.
Your exact size
Open the concrete calculatorFrequently asked questions
How much concrete for a 2-car driveway?
A 2-car (20 × 20 ft) concrete driveway at 5" thick needs about 6.2 cubic yards — roughly $849–$1,120 in ready-mix concrete (material only).
How thick should a concrete driveway be?
5 inches is standard for cars and light trucks; go to 6 inches for heavy vehicles or RVs. Thicker slabs need proportionally more concrete.
Does this include labor and prep?
No — this is the concrete material cost only. A finished driveway also needs excavation, a gravel base, forms, rebar or mesh, and finishing, which typically add 2–3× the material cost.