ClutchCalcs

Construction

Block Wall Calculator

Standard 8x8x16 CMU blocks plus mortar bags by wall area.

Blocks needed

Sq ft of wall
Mortar bags (70 lb)
With 5% waste

FAQ

How many CMUs per square foot? +
About 1.125 standard 8x8x16 blocks per sq ft of wall face.
How much mortar? +
Roughly 3 bags of type S mortar per 100 blocks for a standard joint.