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Concrete Driveway Calculator — Yards, Cost & Thickness
Enter your driveway dimensions and get cubic yards, bag count, ready-mix trucks, and installed cost by region — with thickness recommendations for passenger cars, trucks, and RVs.
Free Tool
Concrete Driveway Calculator
Works for straight, single-car, double-car, and extended driveways. Add multiple sections using the quantity field.
Results include 10% overage. Material: NRMCA 2026 regional averages. Labor: RS Means residential driveway data. Subbase assumes 4" compacted gravel. Always get 2–3 local quotes.
Step by step
How to Calculate Concrete for a Driveway
Driveways need more planning than slabs — thickness, subbase, and drainage all affect the final cost significantly.
Measure length and width
Measure the full paved area in feet. For an L-shaped or irregular driveway, split into rectangles and use the Sections field to add them together — or run the calculator twice and add the results.
Set the right thickness
ACI 330 recommends 6 inches for standard residential driveways. Use 4 inches only if the driveway is foot traffic and light vehicles only. Go to 8 inches if you park trucks, RVs, or heavy equipment regularly.
Add subbase and forming
Concrete cost is only part of the total. Budget 4 inches of compacted gravel subbase ($1–$2/sq ft), wood or steel forms ($0.50–$1/sq ft), and expansion joints every 10 feet. The calculator includes these in the total range.
Get ready-mix, not bags
Almost every driveway exceeds 1 cubic yard — the point where ready-mix beats bags on cost. A typical 40×12 ft driveway at 6 inches needs ~9 yards. That's 405 bags of 80 lb concrete vs one ready-mix truck. Use a truck.
ACI 330 + RS Means 2026
Concrete Driveway Cost & Thickness Guide
What the calculator knows but most homeowners don't — why thickness is the single most important variable in driveway cost and longevity.
Driveway Thickness by Use Case
| Use Case | Thickness | Rebar | PSI | Notes |
|---|---|---|---|---|
| Light passenger cars only | 4" | Wire mesh | 3,000 | Minimum viable. Any settling → cracks. |
| Standard residential | 6" | #3 rebar 18" grid | 3,000 | ACI 330 recommendation. 25–30 yr lifespan. |
| Trucks, SUVs, light RVs | 6–8" | #4 rebar 18" grid | 3,500 | Specify higher PSI when ordering. |
| Heavy RVs, commercial vehicles | 8" | #4 rebar 12" grid | 4,000 | May require engineered design + permit. |
| Freeze-thaw climates | 6" | #4 rebar 18" grid | 4,000 | Air-entrainment additive required. W/C ≤ 0.45. |
Concrete Driveway Cost by Size — Installed (2026)
| Driveway Size | Sq Ft | Yd³ @ 6" | 80 lb bags | Installed cost |
|---|---|---|---|---|
| Single-car short (20×10 ft) | 200 | 3.7 | ~167 | $1,600 – $3,600 |
| Single-car standard (40×12 ft) | 480 | 8.9 | ~401 | $3,840 – $8,640 |
| Double-car (40×20 ft) | 800 | 14.8 | ~667 | $6,400 – $14,400 |
| Double-car long (60×20 ft) | 1,200 | 22.2 | ~1,000 | $9,600 – $21,600 |
| Triple-car (60×30 ft) | 1,800 | 33.3 | ~1,500 | $14,400 – $32,400 |
Full Cost Breakdown — What You're Actually Paying For
| Cost Component | Typical Range | % of Total | Notes |
|---|---|---|---|
| Ready-mix concrete (material) | $120–$165/yd³ | 30–40% | Largest single line item |
| Labor (pour, finish, cure) | $3–$6/sq ft | 25–35% | Varies most by region |
| Subbase preparation | $1–$2/sq ft | 10–15% | Excavation + 4" gravel |
| Forms & expansion joints | $0.50–$1/sq ft | 5–8% | Wood or steel forms |
| Rebar or wire mesh | $0.50–$1.50/sq ft | 5–10% | #3 or #4 rebar at 18" centers |
| Sealing (optional, recommended) | $0.75–$1.50/sq ft | 5–8% | Extends lifespan 5–10 years |
Common Questions
Concrete Driveway Calculator FAQ
Multiply length (ft) × width (ft) × thickness (ft) and divide by 27. A standard single-car driveway at 40×12 ft and 6 inches thick needs: 40 × 12 × 0.5 = 240 ft³ ÷ 27 = 8.9 cubic yards before overage, or about 9.8 yards with 10% overage. Use the calculator above to get your exact number in seconds.
ACI 330 recommends 6 inches for standard residential driveways with passenger vehicle traffic. Four inches is technically workable but is the minimum — any subgrade settling or freeze-thaw movement will crack a 4-inch driveway much faster. If you park trucks, RVs, or heavy equipment, use 8 inches with #4 rebar on a 12-inch grid.
In 2026, a concrete driveway costs $8–$18 per square foot installed, including concrete, labor, forming, subbase, and rebar. A typical 40×12 ft single-car driveway (480 sq ft) runs $3,840–$8,640. The wide range reflects regional labor costs, site conditions, and thickness. West Coast and Northeast jobs run toward the high end; Midwest and Southeast toward the low end.
A 40×12 ft driveway at 6 inches thick requires 8.9 cubic yards before overage, or 9.8 yards with the recommended 10% buffer. At 4 inches thick, that drops to 5.9 yards (6.5 with overage). Order the 6-inch amount — the extra material cost ($100–$150) is far cheaper than a premature crack repair.
Yes — sealing is the best ROI maintenance you can do. Apply a penetrating concrete sealer after 28 days of curing, then reseal every 2–3 years. Cost is $0.75–$1.50/sq ft professionally applied, or half that DIY. Sealing prevents water infiltration, oil stains, and freeze-thaw damage, adding an estimated 5–10 years to the driveway's life.
Asphalt is cheaper upfront ($3–$7/sq ft installed vs $8–$18 for concrete) but requires resealing every 3–5 years and replacement after 15–20 years. Concrete costs more initially but lasts 30–50 years with minimal maintenance. On a 30-year cost basis, concrete is usually cheaper by $2,000–$8,000 for a standard driveway when you factor in asphalt's maintenance and replacement cycles.
Thickness recommendations verified against ACI 330-14 and IRC Section R402.2. Cost data from NRMCA 2026 regional survey and RS Means Residential Construction Cost Data. Labor ranges reflect Bureau of Labor Statistics wage data for construction trades by region. Updated June 2026.