Wall Dimensions
All bricks laid lengthwise (single leaf)
Add 5-10% for breakages and cuts
Subtract area for doors and windows
Results
Enter dimensions and click Calculate to see results
UKUK Building Regulations
References & Sources
Standards Cited
- BS EN 771-1 — Specification for masonry units — Clay masonry units
Defines standard UK brick dimensions (215 x 102.5 x 65mm) used in the calculator - BS EN 1996-2 — Design of masonry structures — Design considerations, selection of materials and execution of masonry
Guidance on bond types (stretcher, English, Flemish, header) and mortar joint specifications - NHBC Standards Chapter 6.1 — NHBC Standards — External masonry walls
Industry standard for bricklaying rates, wastage allowances, and bond pattern requirements View →
Formulas Used
- Wall area:
wallArea = wallLength x wallHeight
Source: Basic geometry - Net wall area:
netWallArea = wallArea - openingArea
Source: Standard deduction method - Bricks required:
bricksRequired = ceil(netWallArea x bricksPerM2 x (1 + wastage/100))
Source: BS EN 1996-2 / NHBC Standards — Bricks per m2: stretcher bond = 60, English/Flemish/header bond = 120
Key Assumptions
- Standard UK brick size: 215 x 102.5 x 65mm — BS EN 771-1
- Default mortar joint width: 10mm — BS EN 1996-2
- Stretcher bond uses 60 bricks per m2; double-leaf bonds (English, Flemish, header) use 120 bricks per m2 — NHBC Standards Chapter 6.1
- Typical wastage allowance of 5-10% for cutting and breakage — Industry standard practice