HesapHanem

Concrete Driveway Calculator

Enter the driveway dimensions and concrete price to estimate the pour.

How it is calculated

Length and width are entered in feet, thickness in inches, and the price per cubic yard in dollars. The tool computes cu ft = length × width × (thickness ÷ 12), then cu yd = cu ft ÷ 27, because one cubic yard is 3 × 3 × 3 = 27 cubic feet. The cost is cu yd × price per yd. The result is the exact geometric volume of a flat rectangular slab: the tool does not add a waste or over-order allowance, does not deduct for gaps, and does not price delivery fees, short-load charges, forms, rebar or labour. Length, width and thickness must all be above zero, and the price field must be filled in, otherwise no result is shown.

Worked example

A driveway is 40 ft long, 12 ft wide and 4 in thick, with concrete at $150 per cubic yard. Thickness in feet = 4 ÷ 12 = 0.3333, so volume = 40 × 12 × 0.3333 = 5.93 cu yd (that is 160.00 cu ft ÷ 27). Cost = 5.93 × 150 = $888.89. Since this is the bare slab volume, add your own allowance on top before calling the plant.

Try this example →

Common mistakes

  • Entering thickness in feet or centimetres. The field is in inches, so a 4 inch slab is 4, not 0.33.
  • Entering dimensions in metres; length and width are expected in feet, and metric values would understate the volume badly.
  • Ordering exactly the figure shown. The result has no waste or uneven-subgrade allowance, so a slab poured on a rough base can come up short.
  • Treating the cost as the full job price. It covers only concrete at your per-yard price, not delivery, pump, forms, reinforcement, finishing or removal of the old driveway.
  • Calculating a curved or L-shaped driveway as one rectangle; split it into separate rectangles and add the volumes.

About this calculator

Concrete for a slab is ordered by the cubic yard in the US, calculated as length × width × thickness (converted to yards). The result is the exact slab volume with no waste allowance included, so add a margin yourself — typically 5-10% — to cover spillage, uneven subgrade, and the ready-mix truck's minimum load. Driveway thickness usually runs 4 inches for cars and light trucks, stepped up to 5-6 inches where heavier vehicles like RVs or delivery trucks will park, since thickness has an outsized effect on both the load capacity and the volume ordered.

This calculator takes your driveway's length and width in feet, its thickness in inches and a price per cubic yard, and returns the concrete volume needed plus an estimated total cost for exactly that volume. Homeowners planning a driveway replacement, DIYers comparing self-pour costs to a contractor's quote, and concrete contractors sizing a ready-mix order use it to avoid ordering short (forcing an expensive emergency top-up truck) or over-ordering and paying for wasted concrete.

Was this helpful?

You can pick up to 3 reactions.

Comments (1)

  • Editorial team

    Slab thickness is the quickest lever on both volume and cost. On the default 40 by 12 ft driveway at 150 per cubic yard, a 4 inch slab comes to 5.93 cu yd, while 5 inches is 7.41 cu yd, a 25 percent increase in concrete for the extra inch. The result is a flat rectangle, so thickened edges or footings need to be added separately. What thickness does your local contractor quote?

Popular calculators

Loan Calculator

Monthly payment, total interest and full amortization schedule.

Percentage Calculator

Percent change, percent of, and ratio calculations.

Discount Calculator

Calculate final price, savings, and discount amount.

BMI Calculator

Body mass index from height and weight (metric or imperial).

Age Calculator

Compute your exact age in years, months and days from a birth date.

Compound Interest Calculator

Calculate the final amount and interest earned with compounding.

All Calculators