Brick Calculator

Calculate exactly how many bricks you need for any wall or paving project. Handles standard, modular and metric bricks with mortar joints. Get brick count, mortar volume and cost estimate instantly.

Quick answer: Bricks needed = Wall Area ÷ (Brick Face Area including mortar joint). A standard 230×76mm brick with 10mm joint covers 0.0188 m² per brick. A 10m² single skin wall needs approximately 531 bricks.

🔨 Brick Calculator

Wall Length (m)

Wall Height (m)

Brick Type

Mortar Joint (mm)

Wall Type

Waste Factor (%)

Brick Price ($ each)

Optional — for cost estimate

Bricks Required

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Wall Area

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Bricks per m²

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Estimated Cost

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📐 How It Works

The brick calculator works out how many bricks fit in the wall area by dividing the total wall area by the face area of each brick including mortar joints. It then applies a waste factor to account for cuts, breakage and off-cuts.

Wall Area (m²) = Length × Height Brick Face Area = (Brick Length + Joint) × (Brick Height + Joint) Bricks per m² = 1 ÷ Brick Face Area Total Bricks = Wall Area × Bricks per m² × Wall Thickness × Waste Factor

📋 Worked Example

A single-skin wall 6m long × 2.4m high using standard bricks (230×76mm) with 10mm mortar joints: Wall area = 14.4 m². Brick face area = 0.240m × 0.086m = 0.02064 m². Bricks per m² = 48.45. Net bricks = 14.4 × 48.45 = 698. With 10% waste = 768 bricks.

❓ Frequently Asked Questions

Standard Australian bricks (230×76mm) with 10mm joints: approximately 48–50 bricks per m² for a single skin wall. Modular bricks (290×90mm): approximately 36–38 per m². Always add 10% for waste and cuts.

Standard mortar joints are 10mm for most brickwork. Thin joint systems use 3mm joints. Never go below 6mm or above 12mm for structural walls. The joint size affects both the final wall appearance and the brick count significantly.

Supply and lay costs vary by region: in Australia, expect $150–$250/m² for standard brickwork including bricks, mortar, ties and labour. Material-only costs are typically $60–$120/m² depending on brick type and quantity.

Yes — calculate the total wall area then subtract any openings. Measure each window or door opening (width × height) and deduct from the gross wall area before calculating bricks. However, order a few extra to account for cuts around openings.