Estimate the number of bricks and mortar needed for your masonry project with precise calculations.
Last updated: March 2026
Disclaimer: This calculator estimates brick face count only—the number of bricks visible on the surface. It does not include mortar volume, wall thickness, structural layers, cavity fills, or footers. Actual requirements depend on openings (windows/doors), bond patterns, cutting losses, site conditions, and wall design. This is a single-wythe face-area estimate for reference only. Always consult masonry plans and verify with suppliers before ordering materials.
Brick calculation determines how many bricks you need for a wall based on its dimensions and the size of bricks you're using. The mortar joint thickness significantly affects the count—a standard joint is 3/8" to 1/2" (10-13mm), but this varies based on aesthetics and brick type.
Always include a waste factor (typically 5-10%) to account for breakage, cutting, sorting, and inevitable mistakes. This calculator uses the effective brick size (brick + mortar joint) to determine how many fit in the wall area. Standard US modular bricks are 7-5/8" × 2-1/4" × 3-5/8", while UK standard bricks are 215mm × 65mm × 102.5mm.
Typically, 1 bag of mortar mix (80 lbs) will lay about 30-35 standard bricks with a 3/8" joint. For our example calculation, you'd need approximately 17 bags of mortar.
Calculate bricks for a 10 ft × 4 ft wall using standard modular bricks:
Typically, 1 bag of mortar mix (80 lbs) will lay about 30-35 standard bricks with a 3/8" joint. Always buy extra—mortar is cheap compared to running out mid-project.
A course is a single horizontal row of bricks. The height of a course is the brick height plus one mortar joint. Planning in courses helps ensure level construction.
Yes, always include 5-10% waste for breakage, cutting, and sorting. For complex patterns or inexperienced masons, consider 15%.
Standard mortar joints are 3/8" to 1/2" (10-13mm). Thicker joints (5/8") can compensate for slightly irregular bricks, while thin joints (1/4") create a modern look.
Yes, but pavers typically use sand joints (1/8" to 1/4") rather than mortar. Adjust the mortar joint setting accordingly for accurate paver calculations.
Measure openings separately, calculate bricks for those areas, and subtract from your total. Or calculate the net wall area (total area minus openings).
Yes—soldier, stretcher, and header bonds change the effective coverage and may affect brick counts. This calculator assumes stretcher bond unless adjusted manually.
In freeze-thaw climates, choose frost-resistant bricks and consider slightly higher waste for replacement and repairs; frost damage can increase breakage rates.
Related Tools
Calculate concrete needed.
Calculate blocks needed.
Calculate concrete fill for blocks.
Calculate column concrete.
Estimate driveway costs.
Calculate tube concrete.