To estimate the cost of a concrete driveway, multiply the length times the width to get the square footage, and then multiply that number by the cost of the concrete. The average cost of concrete is between $6 and $9 per square foot.
While measuring the square footage is the easiest way to estimate the cost of a concrete driveway, measuring the depth as well can provide a more accurate estimation of the total cost. For example, for the majority of driveways, the concrete is 6 inches deep, although some driveway contractors recommend a minimum thickness of only 4 inches, which lowers the total cost of the driveway. Extra features such as decorative flagstone around the perimeter or concrete staining add to the overall cost of the driveway. Hiring a contractor to perform the work adds to the cost as well.