Concrete Calculator for Slabs
 Length: 
 
 Width: 
 
 Depth: 
 
 Quantity:   
Volume of Concrete Needed
Pre-Mixed Concrete Needed
Number of Pre-Mixed Concrete Bags Needed
40 pound bags:
 50 pound bags: 
  60 pound bags: 
 80 pound bags: 
 94 pound bags: 



How much concrete do you need for a slab, square footing or wall? The above Concrete Calculator provides an estimate for how much concrete you'll need based on the length, width and depth of your project. Simply enter the measured distances and, if needed, select the units of measure. The calculator will automatically estimate how much concrete you'll need by volume (cubic feet, cubic yard, and cubic meters), as well as by bags of concrete mix. Note: This calculator will resize automatically to fit on your desktop or mobile device.