Concrete Mix
Enter the size of the slab you want to build in square feet. The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Concrete Mix you need to build a 4" or a 6" slab. (All yields are approximate and do not include allowance for uneven subgrade, waste, etc.)

Enter Number of Square Feet Desired:

For a 4" Slab:
Number of 60# Bags:
Number of 80# Bags:

For a 6" Slab:
Number of 60# Bags:
Number of 80# Bags:

Mortar Mix
Enter the number of 8" x 2" x 4" bricks or 8" x 8" x 16" blocks you plan to use for your project. The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Mortar Mix you need to construct your project with a 3/8" mortar joint. (All yields are approximate and do not include allowance for uneven subgrade, waste, etc.)

Enter Number of Bricks or Blocks Desired:

For 8"x2"x4" Bricks:
Number of 60# Bags:
Number of 80# Bags:

For 8"x8"x16" Blocks:
Number of 60# Bags:
Number of 80# Bags:

Fast-Setting Concrete Mix
Enter the approximate depth of the post hole you want to dig in inches. Remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6' above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground). The calculator will indicate the number of 50 lb. bags of QUIKRETE® Fast-Setting Concrete you need.

Enter Hole Depth in inches:

For 2" post diameter / 6" hole diameter:
For 3" post diameter / 9" hole diameter:
For 4" post diameter / 12" hole diameter: