How Many Concrete Blocks for a 100x8 ft Commercial Wall?

A 100×8 ft commercial concrete block wall with 10% waste requires approximately 810 standard CMU blocks.

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How to use this tool

Enter the wall length and height in feet.
Set a waste allowance of 5–10%.
The result shows wall area and number of 8×8×16 CMU blocks needed.

Calculate the total number of concrete masonry units needed for a large 100-foot long, 8-foot high commercial or warehouse wall.

Frequently asked questions

How many concrete blocks per square foot?: A standard 8×8×16 CMU block laid with a 3/8" mortar joint covers approximately 0.889 sq ft, so you need about 1.125 blocks per square foot.
What is a CMU block?: CMU stands for Concrete Masonry Unit. Standard blocks are 8 inches wide, 8 inches tall, and 16 inches long (nominal dimensions).