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Concrete Calculator

The following concrete calculator can be used to estimate the volume and weight of the concrete needed for the size. When purchasing, we suggest you buy a little more than the calculated result.

Slabs, Square Footings, or Walls

length
width
thickness or height
quantity  
   

Hole, Column, or Round Footings

diameter
depth or height
quantity  
   

Circular Slab or Tube

outer diameter
inner diameter
length or height
quantity  
   

* This concrete calculator uses the pre-mixed cement density of 2130kg/cubic meter or 133 lbs/cubic foot (60 lbs/0.45 cubic feet or 80 lbs/0.60 cubic feet) to obtain the weight needed. Different concrete can have very different density.
weightkg = finalVolumn * 2130; weightlbs = finalVolumnInCFoot * 133;