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Concrete Driveway Calculator

Estimate driveway concrete in yards and truck loads, plus material and installed cost.

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Concrete needed

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Thicken the edges and the apron, not the whole slab

Driveways usually crack at the edges and at the street apron, where tires load an unsupported edge. Thickening the outer edges by an inch or two, or pouring the apron at 6 inches, adds far less concrete than making the whole driveway thicker. Add that extra volume to your order separately.

How much concrete does a driveway need?

Driveway volume is length × width × thickness, with the thickness in inches divided by 12, then divided by 27 for cubic yards. A 40 × 12 ft single-car driveway at 4 inches is 480 sq ft and 160 cu ft, or 5.93 yards; with 10 percent extra it is about 6.5 yards, which fits in one ready-mix truck.

Four inches is the common thickness for driveways that carry passenger cars. Where pickups, delivery vans or a loaded trailer will park, 5 inches is a sensible upgrade, and 6 inches is used for RVs and heavy trucks. Each extra inch adds 25 percent to a 4-inch pour, so choose the thickness first and confirm any local requirement for the apron where the driveway meets the street.

A typical ready-mix truck carries about 8 to 10 cubic yards, so larger driveways need more than one load. Schedule the trucks close together so the second load arrives before the first starts to set; the calculator shows how many loads your order requires at the capacity you enter.

The material line uses your price per yard (about $180 was the 2025 national average). The installed line uses a per-square-foot price that covers excavation, gravel base, forms, reinforcement, placement and finishing. National cost guides put a plain concrete driveway at roughly $8 to $20 per sq ft installed, with decorative stamped or colored finishes at the top of that range or above.

Where these numbers come from

The formulas and default values in this calculator are based on:

  • Angi, How Much Does a Concrete Driveway Cost (2026 data: $8–$20 per sq ft, 4 in common thickness)
  • Concrete Network, Concrete Prices (2025 average ready-mix about $180 per cu yd)
  • Portland Cement Association residential driveway guidance

These are planning estimates. Check product labels, your local building code, and a licensed contractor before you buy materials or build.

Frequently asked questions

How thick should a concrete driveway be?

Four inches for cars and light SUVs is common. Use 5 inches for regular pickup or van traffic and 6 inches for RVs, boats on trailers or heavy trucks. A well-compacted gravel base matters as much as thickness for preventing cracks.

Why does the installed cost differ so much from the material cost?

Ready-mix is often less than a third of an installed driveway. The rest is removal of the old surface, grading, gravel base, forms, rebar or wire mesh, finishing labor, control joints, sealing and the contractor's overhead. Use the installed line for budgeting and the material line if you are doing the work yourself.

What if my driveway is not a simple rectangle?

Split it into rectangles, such as the main run, a turnaround pad and a flared apron, and run each through the calculator. Add the cubic yards together and round the total up to the supplier's ordering increment.

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