Mortar Calculator
Estimate mortar volume and bags for brick or block work.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Mortar estimate uses unit count times mortar volume per unit, adjusted for waste.
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Bag yield | 0.6 cu ft | |
|---|---|---|
| Waste | 10% |
Assumptions
- Measure actual site dimensions before ordering.
- Waste factors, cuts, overlaps, compaction, and product coverage vary by material and installer.
- Confirm quantities with plans, local code, supplier guidance, and manufacturer instructions.
How this calculator works
Formula used
Mortar estimate uses unit count times mortar volume per unit, adjusted for waste.
Example calculation
Plug in your own numbers and the result updates instantly. Mortar estimate uses unit count times mortar volume per unit, adjusted for waste.
Mortar Calculator FAQ
Is this mortar calculator exact?
No. It is an estimating tool only. Actual quantities can change with field measurements, waste, layout, product dimensions, building codes, soil conditions, and installer methods.
Should I add extra material?
Usually yes. Many projects use a waste factor for cuts, breakage, overlap, spillage, grading, or mistakes. The best waste factor depends on the material and layout.
Should I verify before ordering?
Yes. Confirm quantities with your contractor, supplier, plans, local code requirements, and product installation instructions before purchasing materials.