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Determine total brick quantities and mortar bags required for single-wythe and double-wythe masonry walls.
💡 Masonry Tip: Order all bricks in a single manufacturing lot / run to prevent noticeable color variations across different wall sections.
The vertical face area is calculated by multiplying wall length by wall height in feet:
For example, a 20 ft long × 6 ft high wall yields: 20 × 6 = 120 sq ft.
Factoring in standard 3/8-inch mortar joint spacing:
120 sq ft × 7.0 bricks/sq ft = 840 base bricks.
A single-wythe wall is one brick thick (typically used for exterior home brick veneers and decorative garden walls). A double-wythe wall consists of two parallel brick courses interlocked with headers, doubling the brick count.
One 80-lb bag of pre-mixed masonry mortar (Type N or Type S) lays approximately 30 standard bricks:
840 bricks ÷ 30 = 28 bags of mortar.
Brick & Masonry Wall Calculator. Calculate required brick quantities, mortar bags, and surface area for single and double-wythe brick walls and garden borders. ZechKit provides this tool completely free and online, optimized for instant, accurate computations directly inside your web browser.
A Brick Calculator estimates the number of modular, standard, or custom bricks and mortar bags required to construct walls, fireplaces, and garden borders.
Formulas: Wall Surface Area = Length (ft) × Height (ft). Standard Modular Bricks (including 3/8-inch mortar joints) require roughly 6.75 to 7 bricks per square foot for a single-wythe wall. Double-Wythe Wall = Single-Wythe Count × 2. Total with Waste = Bricks × (1 + Waste % / 100).
Mortar Requirements: Plan for approximately 5 to 6 standard 80 lb bags of masonry mortar mix per 100 standard bricks laid.
Waste Buffer: Include a 5% to 10% allowance to accommodate brick cutting around openings and transit breakage.
