Brick Calculator UK – Bricks per m² Guide

How to Calculate

1. Measure total wall length and height to find area: Area = Length × Height.
2. Subtract openings (windows/doors) for net area.
3. Adjust for wall type: double skin doubles bricks; piers/arches use fixed volumes.
4. Brick area = (Length + Mortar) × (Height + Mortar); Bricks = Net Area / Brick Area × Skins × (1 + Wastage).
5. Mortar volume ≈ 0.02 m³ per m² wall (1:5 mix: 120kg cement + 0.4m³ sand per 1000 bricks).

Calculation Principles

UK standard brick covers ~0.0167 m² (215×65mm +10mm joints), so 60/m² single skin, 120/m² double. Formula: Bricks = (Wall Area – Openings) / ((BrickL/1000 + Mortar/1000) × (BrickH/1000 + Mortar/1000)) × Skins × (1 + Wastage/100). Piers: ~50 bricks each; arches: ~100. Imperial converts 1m=3.28ft, 1mm=0.039in. Mortar scales with joints. [web:0][web:1][web:3]

FAQs

• Bricks per m²? 60 single skin, 120 double skin (standard 215×65mm). [web:1][web:3]
• 1000 bricks cover? ~16-17 m² single skin with 5% waste. [web:1][web:3]
• 1m³ wall bricks? ~500 standard, plus 5% waste. [web:3]
• Mortar for 1000 bricks? 120kg cement, 0.4m³ sand (1:5). [web:1][web:3]
• Imperial vs Metric? Imperial ~75×230×110mm (older builds); metric 65×215×102.5mm (modern). [web:3]

Brick Cost Comparison (per 1000)

Bulk discounts apply; delivery £50-£450. South East pricier. [web:3]

Common Errors

• Forgetting mortar adds 10-15% area, underestimating by 20%+ bricks.
• Single vs double skin mix-up doubles/triples quantities.
• Ignoring wastage leads to shortages; always add 10% average.
• Wrong units (metric/imperial) skews by 3x; double-check.
• No openings subtraction over-orders 10-30% for windows/doors.