The average price of a cubic yard of concrete is around $90. The exact price varies by location and the quality of the concrete.
In order to determine the cubic yards of concrete needed, measure the length, width and depth of the area. Multiply the length by the width by the depth, and divide this number by 27 to get the number of cubic yards.
Ready-mix concrete companies charge around $60 per load for delivery, so be sure to figure that into the overall cost.
Depending on the intended use for the concrete, certain mixes work best. The proportion of sand, gravel and cement varies, and areas that freeze in the winter will need a particular mix in order to reduce damage during the freeze and thaw cycles.