Find out exactly how many bricks you need for your wall, including an allowance for the mortar joint and normal wastage.
For a standard 9×4×3 in brick with a 9-inch wall and 0.4-inch mortar joint, expect roughly 10–11 bricks per square foot — this calculator gives you the exact figure for your inputs.
As a rule of thumb, budget around 3 cubic feet of mortar per 1000 standard bricks, though this varies with joint thickness and wall thickness.
Yes — a 5–10% allowance is standard practice to cover breakages, cuts at corners/openings, and future repairs.