Brick Calculator
Calculate the number of bricks needed for a wall based on dimensions and mortar thickness.
Whether you are building a garden wall, a boundary fence, or a full masonry structure, knowing how many bricks to order prevents waste and saves money.
The calculation divides the total wall area by the face area of a single brick plus its mortar joint. A standard metric brick measures 215 mm long by 65 mm high, with a 10 mm mortar joint on all sides. This gives approximately 60 bricks per square meter for a single-skin wall in stretcher bond.
For double-skin (cavity) walls, double the result. Always add 5–10% extra for breakage, cuts around openings, and waste. Different brick sizes — such as modular (194 x 92 mm) or king-size (295 x 90 mm) — will change the count significantly, so always enter the actual dimensions of your chosen brick.