How this calculator works
Standard 8×8×16 block face area is about 0.889 ft² with mortar joint.
For best results, measure actual field dimensions, use supplier-specific coverage, and choose a waste allowance that matches the work conditions.
Related calculators
FAQ
What is the concrete block calculator used for?
Estimate CMU blocks from wall length and height.
Should I add waste or overage?
Yes. Most jobsite estimates should include a reasonable waste factor for cuts, spills, compaction, breakage, or field variation.
Is this a final bid number?
No. Use it as a planning estimate and verify local material coverage, code requirements, and supplier specifications before ordering.