#### Calculate Bags of Concrete Mix - Round + Square Footing ...

There are 45 80-pound bags and about 60 60-pound bags of concrete in a cubic yard. Each 80-pound bag of concrete covers about 0.6 cubic feet. There are 27 cubic feet in a cubic yard: 27/.6 = 45. Though the number of 80 pound bags is exact at 45, overestimating the number of bags needed is a common construction practice to account for the minor ...