🧱 Brick & Block Calculator

Calculate bricks or concrete blocks, mortar bags, and pallets for any wall. Subtract openings for doors and windows.

Wall length (m)

Wall height (m)

Wall construction

Doors (each ≈ 1.9 × 0.9 m)

Windows (each ≈ 1.2 × 1.0 m)

How to calculate bricks and mortar

The standard Australian brick (230 × 110 × 76 mm) when laid in stretcher bond with 10 mm mortar joints covers about 50 bricks per square metre of wall face.

Quick reference

Single skin: One brick thick (110 mm). Used for fences, garden walls, and veneer cladding.
Double brick: Two bricks thick (220 mm). Older Australian homes were typically double brick — excellent thermal mass.
Concrete blocks: 390 × 190 × 190 mm, 12.5 blocks per m². Common for retaining walls and commercial construction.
Mortar: Approximately 1 bag (20 kg) per 30 bricks. Pre-mixed mortar bags are available at hardware stores.

🏗️ Fun fact: The standard Australian brick size was established in 1966 at 230 × 110 × 76 mm. Australians use approximately 1.7 billion bricks per year.