CMU Block Count

Stretcher face area with 5% waste; rough mortar bags.

Length (ft)

Height (ft)

Block face (ft²)

Tab to move between fields

Blocks

269

Mortar bags (~)29

How to Use This Calculator

Enter the wall length in feet and wall height in feet.
Set the block face area in sq ft — standard 8×16 stretcher blocks cover approximately 1.125 sq ft each.
Read the block count including 5% waste and the approximate number of mortar bags needed.

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