How to Figure How Much Concrete You Need Garden GuidesFigure out the concrete you need for a footer To do this take the overall length of the footers multiply that by the width of the footer if the footer is 16 inches wide then that will be 1 33 and multiply that by the thickness of the footer **-how do i calculate how much concrete i need-**,Concrete Calculator Determine How Many Cubic Yards You NeedTo estimate how much concrete your project requires enter your project area measurements rounded to the nearest foot The chart below will help you determine which measurements to make based on the shape the area in consideration …… **Get More**