How to Determine the Right Amount of Ready Mix Concrete for Your Project

https://concretecorner.laurelcurrent.com/posts/how-to-determine-the-right-amount-of-ready-mix-concrete-for-your-project

To figure out how much ready mix concrete you need, start by calculating the volume of your project area in cubic feet—multiply length by width by depth. Then, divide that number by 27 to convert to cubic yards, since concrete is typically sold by the yard. Always add 5-10% extra to account for spillage or uneven ground; better to have a little left over than to run short midway through pouring.