Brick Mortar Cost Calculator
Estimate mortar bags and cost for brick walls from net wall area, brick density, mortar volume per thousand bricks and waste allowance.
Default project preview
37 bags
Net wall area
432 ft²
Estimated bricks
3,024
Net mortar volume
22.7 ft³
Purchased yield
25.9 ft³
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Wall length
Enter this project assumption in ft. The current imperial default is 60 ft.
Wall height
Enter this project assumption in ft. The current imperial default is 8 ft.
Door and window area
Enter this project assumption in ft². The current imperial default is 48 ft². Minimum: 0.
Bricks per wall area
Enter this project assumption in bricks/ft². The current imperial default is 7 bricks/ft².
Mortar per 1,000 bricks
Enter this project assumption in ft³. The current imperial default is 7.5 ft³.
Mortar waste allowance
Enter this project assumption in %. The current imperial default is 12 %. Minimum: 0. Maximum: 50.
Mixed yield per bag
Enter this project assumption in ft³. The current imperial default is 0.7 ft³.
Price per mortar bag
Enter this project assumption in a unitless value. The current imperial default is 9.5. Minimum: 0.
How to read the outputs
Net wall area
after openings. Default preview: 432 ft².
Estimated bricks
7 per ft². Default preview: 3,024.
Net mortar volume
before allowance. Default preview: 22.7 ft³.
Purchased yield
0.7 ft³ per bag. Default preview: 25.9 ft³.
Waste allowance
mixing, joints and handling. Default preview: 12%.
Mortar cost
bags only. Default preview: $351.50.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Bricks = net wall area × bricks per area. Mortar = bricks ÷ 1,000 × mortar factor × waste factor. Bags are rounded up.
Reviewed project guidance
How to use this estimate in a real project
Last reviewed: July 30, 2026
Estimate brick-mortar material cost from wall area or brick count, mortar yield, bag count and local unit price. It separates quantity arithmetic from mortar-type selection and labor pricing.
Calculation steps
- 1Determine brick quantity or net wall area.
- 2Use joint dimensions and product-specific mortar yield.
- 3Round mortar to full bags or batch quantities.
- 4Multiply by local prices and list delivery, pigment and equipment separately.
Worked numerical example
A wall requires an estimated 1.6 yd³ of mortar. At 0.65 ft³ usable yield per bag, that is about 67 bags. At ₪42 per bag, material cost is ₪2,814 before delivery, sand or color additives.
Purchasing and rounding
Verify whether the price is for preblended mortar, cement-lime components or site-batched materials. Color consistency may require buying one lot and controlling water and mixing.
Interpret the result
The result is mortar material cost, not installed masonry cost. Scaffold, labor, reinforcement, flashing, cleaning and waste can exceed the mortar line item.
Page-specific assumptions
- Brick size and joint dimensions are consistent.
- Yield input reflects the selected mortar and mixing method.
- Prices use one currency and tax basis.
Common mistakes
- Using bag count from a different mortar product.
- Ignoring wall openings or excessive joint depth.
- Comparing preblended cost with site-batched cost without full ingredients.
- Treating mortar cost as total wall cost.
Primary and technical references
BuildMeter provides planning estimates, not engineering, architectural, electrical, mechanical, plumbing, permit or code approval. Review the methodology and verify final decisions with product documentation and qualified professionals.
FAQ
Brick Mortar Cost Calculator questions
Why estimate mortar from brick count?+
Brick count provides a practical link between wall area and the published mortar factor for a masonry unit and joint profile.
Should small openings be deducted?+
Large openings should be deducted. Small interruptions can be offset by cuts and waste.
Does mortar type change yield?+
Yes. Bag weight, mix design, water content and joint geometry affect actual yield.