Mortar Calculator
Estimate mortar volume for a simple rectangular brick or block wall. Enter wall size, masonry unit size and joint thickness. The result is an estimating tool, not a substitute for manufacturer yield data.
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How the mortar calculator works
Estimate mortar volume for a simple rectangular brick or block wall. Enter wall size, masonry unit size and joint thickness. The result is an estimating tool, not a substitute for manufacturer yield data.
The estimate approximates wall face volume minus the masonry units, with the joint geometry simplified for practical estimating. The calculator is designed to give a useful first-pass material estimate while keeping the assumptions visible. For a purchase, compare the result with the product packaging or supplier quotation.
Common search terms for this tool include mortar calculator, mortar quantity calculator, brick mortar calculator, block mortar calculator. The wording is included naturally so the page answers the same questions people ask when planning a project.
Frequently asked questions
Why is mortar quantity only an estimate?
Real walls have openings, bond patterns, unit shapes and different joint geometries.
Should I use bag yield instead?
Yes. For purchasing, compare the estimated mortar volume with the manufacturer's stated yield.
Can I subtract doors and windows?
Not in this simplified version. For large openings, split the wall into sections for a better estimate.
Does this work for block walls?
Yes, when you enter the actual block dimensions.