Concrete Block Calculator

Wall dimensions

Enter the total wall length and height. Deduct openings below.


Block size

Nominal face size width x height. Mortar joint is included in nominal size.


Openings and waste

A standard 80 lb bag of mortar lays roughly 33 standard blocks.


Estimate
Wall Area
0
sq ft net
Blocks Needed
0
before waste
Blocks + Waste
0
order this many
Mortar Bags
0
80 lb bags

Enter wall dimensions to see your block estimate.

Estimates assume a single-wythe wall with standard 3/8 inch mortar joints. Order extra for breakage, cuts, and corners. Verify load requirements and footing specs with your local building code.