Calculators

Cinder Block Calculator

Estimate concrete masonry units for your wall.

Your inputs

CMU: nominal size includes the mortar-joint allowance
Measurement units

Wall sections

Use one section per wall; the shared wall height applies to all sections.

Section 1
Openings & exclusions
Material settings & waste

Editable planning allowance, not an optimized cutting plan.

Complete the required inputs to calculate. Check material settings for additional fields.

Results

Enter dimensions and check the material settings to calculate.

Use this calculator as a guide. Independently verify all calculations for accuracy before starting your project.

“Measure twice. Cut once”
-- dad